Download Anna University B-Tech CSE 7th Sem CS6513 Security Lab Manual Question Paper

Download Anna University B.Tech (Bachelor of Technology) CSE (Computer Science And Engineering) 7th Sem CS6513 Security Lab Manual Question Paper.


1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL
FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION
FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees











FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments












FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments



















FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES
FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system



































FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58
FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN













FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.


FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'
FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'












































FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.






FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.

























FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.


























15 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter a 3 letter string: hai
Encrypted string is :fdx
Inverse Matrix is :
0.083333336 0.41666666 -0.33333334
-0.41666666 -0.083333336 0.6666667
0.5833333 -0.083333336 -0.33333334
Decrypted string is :hai























Result:

Thus the Java program to implement substitution and transposition techniques using hill cipher
algorithm was executed successfully

Outcome:
Thus the outcome of hill cipher has been attained.

Application:

Communicating the messages in between the users with trust using above algorithm.


FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.


























15 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter a 3 letter string: hai
Encrypted string is :fdx
Inverse Matrix is :
0.083333336 0.41666666 -0.33333334
-0.41666666 -0.083333336 0.6666667
0.5833333 -0.083333336 -0.33333334
Decrypted string is :hai























Result:

Thus the Java program to implement substitution and transposition techniques using hill cipher
algorithm was executed successfully

Outcome:
Thus the outcome of hill cipher has been attained.

Application:

Communicating the messages in between the users with trust using above algorithm.



16 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(d)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES VIGNERE CIPHER


Aim:
To write a java program to implement vignere cipher

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm :

1. A vignere Square or vignere table consists of the alphabet written out 26 times in different rows,
each alphabet shifted cyclically to the left compared to the previous alphabet, corresponding to the
26 possible Caesar ciphers.
2. At different points in the encryption process, the cipher uses a different alphabet from one of the
rows. The alphabet used at each point depends on a repeating keyword.
3. The person sending the message to be encrypted (eg. attackatdawn) chooses a keyword and
repeats it until it matches the length of the plaintext, for example, the keyword lemon, the cipher
key will be lemonlemonle.
4. Using a VignereSquare and a CipherKey each row starts with a key letter. The remainder of the
row holds the letters A to Z (in shifted order).
5. Although there are 26 key rows shown, you will only use as many keys (different alphabets) as
there are unique letters in the key string, here just 5 keys, {L, E, M, O, N} .
6. For successive letters of the message, we are going to take successive letters of the key string,
and encipher each message letter using its corresponding key row. Choose the next letter of the
key, go along that row to find the column heading that matches the message character; the letter at
the intersection of [key-row, msg-col] is the enciphered letter.
7. ]The first letter of the plaintext, A, is paired with L, the first letter of the key. So use row L and
column A of the Vignere square, namely L. Similarly, for the second letter of the plaintext, the
second letter of the key is used; the letter at row E and column T is X. The rest of the plaintext is
enciphered in a similar fashion


FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.


























15 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter a 3 letter string: hai
Encrypted string is :fdx
Inverse Matrix is :
0.083333336 0.41666666 -0.33333334
-0.41666666 -0.083333336 0.6666667
0.5833333 -0.083333336 -0.33333334
Decrypted string is :hai























Result:

Thus the Java program to implement substitution and transposition techniques using hill cipher
algorithm was executed successfully

Outcome:
Thus the outcome of hill cipher has been attained.

Application:

Communicating the messages in between the users with trust using above algorithm.



16 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(d)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES VIGNERE CIPHER


Aim:
To write a java program to implement vignere cipher

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm :

1. A vignere Square or vignere table consists of the alphabet written out 26 times in different rows,
each alphabet shifted cyclically to the left compared to the previous alphabet, corresponding to the
26 possible Caesar ciphers.
2. At different points in the encryption process, the cipher uses a different alphabet from one of the
rows. The alphabet used at each point depends on a repeating keyword.
3. The person sending the message to be encrypted (eg. attackatdawn) chooses a keyword and
repeats it until it matches the length of the plaintext, for example, the keyword lemon, the cipher
key will be lemonlemonle.
4. Using a VignereSquare and a CipherKey each row starts with a key letter. The remainder of the
row holds the letters A to Z (in shifted order).
5. Although there are 26 key rows shown, you will only use as many keys (different alphabets) as
there are unique letters in the key string, here just 5 keys, {L, E, M, O, N} .
6. For successive letters of the message, we are going to take successive letters of the key string,
and encipher each message letter using its corresponding key row. Choose the next letter of the
key, go along that row to find the column heading that matches the message character; the letter at
the intersection of [key-row, msg-col] is the enciphered letter.
7. ]The first letter of the plaintext, A, is paired with L, the first letter of the key. So use row L and
column A of the Vignere square, namely L. Similarly, for the second letter of the plaintext, the
second letter of the key is used; the letter at row E and column T is X. The rest of the plaintext is
enciphered in a similar fashion



17 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Plaintext: ATTACKATDAWN
Key: LEMONLEMONLE
Ciphertext: LXFOPVEFRNHR


























Result:

Thus the Java program to implement substitution and transposition techniques using vignere cipher
algorithm was executed successfully

Outcome:
Thus the outcome of vignere cipher has been attained.

Application:

Communicating the messages in between the users with privacy.


FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.


























15 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter a 3 letter string: hai
Encrypted string is :fdx
Inverse Matrix is :
0.083333336 0.41666666 -0.33333334
-0.41666666 -0.083333336 0.6666667
0.5833333 -0.083333336 -0.33333334
Decrypted string is :hai























Result:

Thus the Java program to implement substitution and transposition techniques using hill cipher
algorithm was executed successfully

Outcome:
Thus the outcome of hill cipher has been attained.

Application:

Communicating the messages in between the users with trust using above algorithm.



16 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(d)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES VIGNERE CIPHER


Aim:
To write a java program to implement vignere cipher

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm :

1. A vignere Square or vignere table consists of the alphabet written out 26 times in different rows,
each alphabet shifted cyclically to the left compared to the previous alphabet, corresponding to the
26 possible Caesar ciphers.
2. At different points in the encryption process, the cipher uses a different alphabet from one of the
rows. The alphabet used at each point depends on a repeating keyword.
3. The person sending the message to be encrypted (eg. attackatdawn) chooses a keyword and
repeats it until it matches the length of the plaintext, for example, the keyword lemon, the cipher
key will be lemonlemonle.
4. Using a VignereSquare and a CipherKey each row starts with a key letter. The remainder of the
row holds the letters A to Z (in shifted order).
5. Although there are 26 key rows shown, you will only use as many keys (different alphabets) as
there are unique letters in the key string, here just 5 keys, {L, E, M, O, N} .
6. For successive letters of the message, we are going to take successive letters of the key string,
and encipher each message letter using its corresponding key row. Choose the next letter of the
key, go along that row to find the column heading that matches the message character; the letter at
the intersection of [key-row, msg-col] is the enciphered letter.
7. ]The first letter of the plaintext, A, is paired with L, the first letter of the key. So use row L and
column A of the Vignere square, namely L. Similarly, for the second letter of the plaintext, the
second letter of the key is used; the letter at row E and column T is X. The rest of the plaintext is
enciphered in a similar fashion



17 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Plaintext: ATTACKATDAWN
Key: LEMONLEMONLE
Ciphertext: LXFOPVEFRNHR


























Result:

Thus the Java program to implement substitution and transposition techniques using vignere cipher
algorithm was executed successfully

Outcome:
Thus the outcome of vignere cipher has been attained.

Application:

Communicating the messages in between the users with privacy.



18 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(e)

IMPLEMENTATION RAIL FENCE TRANSFORMATION TECHNIQUES

Aim:

To write a java program to implement rail fence algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. In the rail fence cipher, the plaintext is written downwards and diagonally on successive "rails" of an
imaginary fence, then moving up when we reach the bottom rail.
2. When we reach the top rail, the message is written downwards again until the whole plaintext is
written out. The message is then read off in rows.
3. Write down the plain text message as a sequence of diagonals.
4. Read the plain text written in Step 1 as a sequence of rows.






















FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.


























15 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter a 3 letter string: hai
Encrypted string is :fdx
Inverse Matrix is :
0.083333336 0.41666666 -0.33333334
-0.41666666 -0.083333336 0.6666667
0.5833333 -0.083333336 -0.33333334
Decrypted string is :hai























Result:

Thus the Java program to implement substitution and transposition techniques using hill cipher
algorithm was executed successfully

Outcome:
Thus the outcome of hill cipher has been attained.

Application:

Communicating the messages in between the users with trust using above algorithm.



16 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(d)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES VIGNERE CIPHER


Aim:
To write a java program to implement vignere cipher

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm :

1. A vignere Square or vignere table consists of the alphabet written out 26 times in different rows,
each alphabet shifted cyclically to the left compared to the previous alphabet, corresponding to the
26 possible Caesar ciphers.
2. At different points in the encryption process, the cipher uses a different alphabet from one of the
rows. The alphabet used at each point depends on a repeating keyword.
3. The person sending the message to be encrypted (eg. attackatdawn) chooses a keyword and
repeats it until it matches the length of the plaintext, for example, the keyword lemon, the cipher
key will be lemonlemonle.
4. Using a VignereSquare and a CipherKey each row starts with a key letter. The remainder of the
row holds the letters A to Z (in shifted order).
5. Although there are 26 key rows shown, you will only use as many keys (different alphabets) as
there are unique letters in the key string, here just 5 keys, {L, E, M, O, N} .
6. For successive letters of the message, we are going to take successive letters of the key string,
and encipher each message letter using its corresponding key row. Choose the next letter of the
key, go along that row to find the column heading that matches the message character; the letter at
the intersection of [key-row, msg-col] is the enciphered letter.
7. ]The first letter of the plaintext, A, is paired with L, the first letter of the key. So use row L and
column A of the Vignere square, namely L. Similarly, for the second letter of the plaintext, the
second letter of the key is used; the letter at row E and column T is X. The rest of the plaintext is
enciphered in a similar fashion



17 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Plaintext: ATTACKATDAWN
Key: LEMONLEMONLE
Ciphertext: LXFOPVEFRNHR


























Result:

Thus the Java program to implement substitution and transposition techniques using vignere cipher
algorithm was executed successfully

Outcome:
Thus the outcome of vignere cipher has been attained.

Application:

Communicating the messages in between the users with privacy.



18 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(e)

IMPLEMENTATION RAIL FENCE TRANSFORMATION TECHNIQUES

Aim:

To write a java program to implement rail fence algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. In the rail fence cipher, the plaintext is written downwards and diagonally on successive "rails" of an
imaginary fence, then moving up when we reach the bottom rail.
2. When we reach the top rail, the message is written downwards again until the whole plaintext is
written out. The message is then read off in rows.
3. Write down the plain text message as a sequence of diagonals.
4. Read the plain text written in Step 1 as a sequence of rows.























19 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:



























Result:

Thus the Java program to implement substitution and transposition techniques using rail fence
algorithm was executed successfully.
Outcome:
Thus the outcome of rail fence has been attained.

Application:

Communicating the messages in between the users with privacy.
FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.


























15 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter a 3 letter string: hai
Encrypted string is :fdx
Inverse Matrix is :
0.083333336 0.41666666 -0.33333334
-0.41666666 -0.083333336 0.6666667
0.5833333 -0.083333336 -0.33333334
Decrypted string is :hai























Result:

Thus the Java program to implement substitution and transposition techniques using hill cipher
algorithm was executed successfully

Outcome:
Thus the outcome of hill cipher has been attained.

Application:

Communicating the messages in between the users with trust using above algorithm.



16 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(d)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES VIGNERE CIPHER


Aim:
To write a java program to implement vignere cipher

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm :

1. A vignere Square or vignere table consists of the alphabet written out 26 times in different rows,
each alphabet shifted cyclically to the left compared to the previous alphabet, corresponding to the
26 possible Caesar ciphers.
2. At different points in the encryption process, the cipher uses a different alphabet from one of the
rows. The alphabet used at each point depends on a repeating keyword.
3. The person sending the message to be encrypted (eg. attackatdawn) chooses a keyword and
repeats it until it matches the length of the plaintext, for example, the keyword lemon, the cipher
key will be lemonlemonle.
4. Using a VignereSquare and a CipherKey each row starts with a key letter. The remainder of the
row holds the letters A to Z (in shifted order).
5. Although there are 26 key rows shown, you will only use as many keys (different alphabets) as
there are unique letters in the key string, here just 5 keys, {L, E, M, O, N} .
6. For successive letters of the message, we are going to take successive letters of the key string,
and encipher each message letter using its corresponding key row. Choose the next letter of the
key, go along that row to find the column heading that matches the message character; the letter at
the intersection of [key-row, msg-col] is the enciphered letter.
7. ]The first letter of the plaintext, A, is paired with L, the first letter of the key. So use row L and
column A of the Vignere square, namely L. Similarly, for the second letter of the plaintext, the
second letter of the key is used; the letter at row E and column T is X. The rest of the plaintext is
enciphered in a similar fashion



17 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Plaintext: ATTACKATDAWN
Key: LEMONLEMONLE
Ciphertext: LXFOPVEFRNHR


























Result:

Thus the Java program to implement substitution and transposition techniques using vignere cipher
algorithm was executed successfully

Outcome:
Thus the outcome of vignere cipher has been attained.

Application:

Communicating the messages in between the users with privacy.



18 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(e)

IMPLEMENTATION RAIL FENCE TRANSFORMATION TECHNIQUES

Aim:

To write a java program to implement rail fence algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. In the rail fence cipher, the plaintext is written downwards and diagonally on successive "rails" of an
imaginary fence, then moving up when we reach the bottom rail.
2. When we reach the top rail, the message is written downwards again until the whole plaintext is
written out. The message is then read off in rows.
3. Write down the plain text message as a sequence of diagonals.
4. Read the plain text written in Step 1 as a sequence of rows.























19 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:



























Result:

Thus the Java program to implement substitution and transposition techniques using rail fence
algorithm was executed successfully.
Outcome:
Thus the outcome of rail fence has been attained.

Application:

Communicating the messages in between the users with privacy.

20 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00



1. What is public-key cryptography?
2. What is block cipher?
3. What is stream cipher?
4. Name a most widely used stream cipher.
5. What are the differences among encoding, encryption and hashing?
6. What are Brute Force Attacks?
7. What is the length of key in playfair cipher?
8. What is the length of matrix in playfair cipher?
9. What is the length of key in hill cipher?
10. What is the length of key in caesar cipher?
11. What is the length of key in monoalphabetic cipher?
12. What is the length of key in one time pad cipher?
13. What is the length of key in polyalphabetic cipher?
14. What is the length of key in railfence cipher?


















Viva-voce

FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.


























15 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter a 3 letter string: hai
Encrypted string is :fdx
Inverse Matrix is :
0.083333336 0.41666666 -0.33333334
-0.41666666 -0.083333336 0.6666667
0.5833333 -0.083333336 -0.33333334
Decrypted string is :hai























Result:

Thus the Java program to implement substitution and transposition techniques using hill cipher
algorithm was executed successfully

Outcome:
Thus the outcome of hill cipher has been attained.

Application:

Communicating the messages in between the users with trust using above algorithm.



16 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(d)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES VIGNERE CIPHER


Aim:
To write a java program to implement vignere cipher

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm :

1. A vignere Square or vignere table consists of the alphabet written out 26 times in different rows,
each alphabet shifted cyclically to the left compared to the previous alphabet, corresponding to the
26 possible Caesar ciphers.
2. At different points in the encryption process, the cipher uses a different alphabet from one of the
rows. The alphabet used at each point depends on a repeating keyword.
3. The person sending the message to be encrypted (eg. attackatdawn) chooses a keyword and
repeats it until it matches the length of the plaintext, for example, the keyword lemon, the cipher
key will be lemonlemonle.
4. Using a VignereSquare and a CipherKey each row starts with a key letter. The remainder of the
row holds the letters A to Z (in shifted order).
5. Although there are 26 key rows shown, you will only use as many keys (different alphabets) as
there are unique letters in the key string, here just 5 keys, {L, E, M, O, N} .
6. For successive letters of the message, we are going to take successive letters of the key string,
and encipher each message letter using its corresponding key row. Choose the next letter of the
key, go along that row to find the column heading that matches the message character; the letter at
the intersection of [key-row, msg-col] is the enciphered letter.
7. ]The first letter of the plaintext, A, is paired with L, the first letter of the key. So use row L and
column A of the Vignere square, namely L. Similarly, for the second letter of the plaintext, the
second letter of the key is used; the letter at row E and column T is X. The rest of the plaintext is
enciphered in a similar fashion



17 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Plaintext: ATTACKATDAWN
Key: LEMONLEMONLE
Ciphertext: LXFOPVEFRNHR


























Result:

Thus the Java program to implement substitution and transposition techniques using vignere cipher
algorithm was executed successfully

Outcome:
Thus the outcome of vignere cipher has been attained.

Application:

Communicating the messages in between the users with privacy.



18 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(e)

IMPLEMENTATION RAIL FENCE TRANSFORMATION TECHNIQUES

Aim:

To write a java program to implement rail fence algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. In the rail fence cipher, the plaintext is written downwards and diagonally on successive "rails" of an
imaginary fence, then moving up when we reach the bottom rail.
2. When we reach the top rail, the message is written downwards again until the whole plaintext is
written out. The message is then read off in rows.
3. Write down the plain text message as a sequence of diagonals.
4. Read the plain text written in Step 1 as a sequence of rows.























19 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:



























Result:

Thus the Java program to implement substitution and transposition techniques using rail fence
algorithm was executed successfully.
Outcome:
Thus the outcome of rail fence has been attained.

Application:

Communicating the messages in between the users with privacy.

20 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00



1. What is public-key cryptography?
2. What is block cipher?
3. What is stream cipher?
4. Name a most widely used stream cipher.
5. What are the differences among encoding, encryption and hashing?
6. What are Brute Force Attacks?
7. What is the length of key in playfair cipher?
8. What is the length of matrix in playfair cipher?
9. What is the length of key in hill cipher?
10. What is the length of key in caesar cipher?
11. What is the length of key in monoalphabetic cipher?
12. What is the length of key in one time pad cipher?
13. What is the length of key in polyalphabetic cipher?
14. What is the length of key in railfence cipher?


















Viva-voce


21 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(a)

IMPLEMENTATION OF DES


Aim:
To write a program to implement DES algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. Firstly, we need to process the key.
2. Get a 64-bit key from the user. (Every 8th bit is considered a parity bit. For a key to have correct parity,
each byte should contain an odd number of "1" bits.).
3. Calculate the key schedule.
4. Perform the following permutation on the 64-bit key.
5. Split the permuted key into two halves. The first 28 bits are called C[0] and the last 28 bits are called
D[0].
6. Calculate the 16 subkeys. Start with i = 1. Perform one or two circular left shifts on both C[i-1] and D[i-1]
to get C[i] and D[i], respectively. The number of shifts per iteration are given below:
Iteration # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Left Shifts 1 1 2 2 2 2 2 2 1 2 2 2 2 2 2 1
7. Permute the concatenation C[i]D[i] as indicated below. This will yield K[i], which is 48 bits long.
Permuted Choice 2 (PC-2).
8. Loop back to 1.2.3.1 until K[16] has been calculated. Process a 64-bit data block.
9. Get a 64-bit data block. If the block is shorter than 64 bits, it should be padded as appropriate for the
application.
10. Perform the following permutation on the data block called Initial Permutation (IP).




FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.


























15 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter a 3 letter string: hai
Encrypted string is :fdx
Inverse Matrix is :
0.083333336 0.41666666 -0.33333334
-0.41666666 -0.083333336 0.6666667
0.5833333 -0.083333336 -0.33333334
Decrypted string is :hai























Result:

Thus the Java program to implement substitution and transposition techniques using hill cipher
algorithm was executed successfully

Outcome:
Thus the outcome of hill cipher has been attained.

Application:

Communicating the messages in between the users with trust using above algorithm.



16 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(d)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES VIGNERE CIPHER


Aim:
To write a java program to implement vignere cipher

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm :

1. A vignere Square or vignere table consists of the alphabet written out 26 times in different rows,
each alphabet shifted cyclically to the left compared to the previous alphabet, corresponding to the
26 possible Caesar ciphers.
2. At different points in the encryption process, the cipher uses a different alphabet from one of the
rows. The alphabet used at each point depends on a repeating keyword.
3. The person sending the message to be encrypted (eg. attackatdawn) chooses a keyword and
repeats it until it matches the length of the plaintext, for example, the keyword lemon, the cipher
key will be lemonlemonle.
4. Using a VignereSquare and a CipherKey each row starts with a key letter. The remainder of the
row holds the letters A to Z (in shifted order).
5. Although there are 26 key rows shown, you will only use as many keys (different alphabets) as
there are unique letters in the key string, here just 5 keys, {L, E, M, O, N} .
6. For successive letters of the message, we are going to take successive letters of the key string,
and encipher each message letter using its corresponding key row. Choose the next letter of the
key, go along that row to find the column heading that matches the message character; the letter at
the intersection of [key-row, msg-col] is the enciphered letter.
7. ]The first letter of the plaintext, A, is paired with L, the first letter of the key. So use row L and
column A of the Vignere square, namely L. Similarly, for the second letter of the plaintext, the
second letter of the key is used; the letter at row E and column T is X. The rest of the plaintext is
enciphered in a similar fashion



17 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Plaintext: ATTACKATDAWN
Key: LEMONLEMONLE
Ciphertext: LXFOPVEFRNHR


























Result:

Thus the Java program to implement substitution and transposition techniques using vignere cipher
algorithm was executed successfully

Outcome:
Thus the outcome of vignere cipher has been attained.

Application:

Communicating the messages in between the users with privacy.



18 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(e)

IMPLEMENTATION RAIL FENCE TRANSFORMATION TECHNIQUES

Aim:

To write a java program to implement rail fence algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. In the rail fence cipher, the plaintext is written downwards and diagonally on successive "rails" of an
imaginary fence, then moving up when we reach the bottom rail.
2. When we reach the top rail, the message is written downwards again until the whole plaintext is
written out. The message is then read off in rows.
3. Write down the plain text message as a sequence of diagonals.
4. Read the plain text written in Step 1 as a sequence of rows.























19 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:



























Result:

Thus the Java program to implement substitution and transposition techniques using rail fence
algorithm was executed successfully.
Outcome:
Thus the outcome of rail fence has been attained.

Application:

Communicating the messages in between the users with privacy.

20 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00



1. What is public-key cryptography?
2. What is block cipher?
3. What is stream cipher?
4. Name a most widely used stream cipher.
5. What are the differences among encoding, encryption and hashing?
6. What are Brute Force Attacks?
7. What is the length of key in playfair cipher?
8. What is the length of matrix in playfair cipher?
9. What is the length of key in hill cipher?
10. What is the length of key in caesar cipher?
11. What is the length of key in monoalphabetic cipher?
12. What is the length of key in one time pad cipher?
13. What is the length of key in polyalphabetic cipher?
14. What is the length of key in railfence cipher?


















Viva-voce


21 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(a)

IMPLEMENTATION OF DES


Aim:
To write a program to implement DES algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. Firstly, we need to process the key.
2. Get a 64-bit key from the user. (Every 8th bit is considered a parity bit. For a key to have correct parity,
each byte should contain an odd number of "1" bits.).
3. Calculate the key schedule.
4. Perform the following permutation on the 64-bit key.
5. Split the permuted key into two halves. The first 28 bits are called C[0] and the last 28 bits are called
D[0].
6. Calculate the 16 subkeys. Start with i = 1. Perform one or two circular left shifts on both C[i-1] and D[i-1]
to get C[i] and D[i], respectively. The number of shifts per iteration are given below:
Iteration # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Left Shifts 1 1 2 2 2 2 2 2 1 2 2 2 2 2 2 1
7. Permute the concatenation C[i]D[i] as indicated below. This will yield K[i], which is 48 bits long.
Permuted Choice 2 (PC-2).
8. Loop back to 1.2.3.1 until K[16] has been calculated. Process a 64-bit data block.
9. Get a 64-bit data block. If the block is shorter than 64 bits, it should be padded as appropriate for the
application.
10. Perform the following permutation on the data block called Initial Permutation (IP).





22 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Input.txt
JavaCode
encrypted.txt
?w~Z5??&??E
decrypted.txt
JavaCode




























Result:
Thus the Java program to implement cryptographic algorithm using DES algorithm was executed
successfully
Outcome:
Thus the outcome of DES has been attained.

Application:

Developing any private application with high security.


FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.


























15 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter a 3 letter string: hai
Encrypted string is :fdx
Inverse Matrix is :
0.083333336 0.41666666 -0.33333334
-0.41666666 -0.083333336 0.6666667
0.5833333 -0.083333336 -0.33333334
Decrypted string is :hai























Result:

Thus the Java program to implement substitution and transposition techniques using hill cipher
algorithm was executed successfully

Outcome:
Thus the outcome of hill cipher has been attained.

Application:

Communicating the messages in between the users with trust using above algorithm.



16 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(d)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES VIGNERE CIPHER


Aim:
To write a java program to implement vignere cipher

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm :

1. A vignere Square or vignere table consists of the alphabet written out 26 times in different rows,
each alphabet shifted cyclically to the left compared to the previous alphabet, corresponding to the
26 possible Caesar ciphers.
2. At different points in the encryption process, the cipher uses a different alphabet from one of the
rows. The alphabet used at each point depends on a repeating keyword.
3. The person sending the message to be encrypted (eg. attackatdawn) chooses a keyword and
repeats it until it matches the length of the plaintext, for example, the keyword lemon, the cipher
key will be lemonlemonle.
4. Using a VignereSquare and a CipherKey each row starts with a key letter. The remainder of the
row holds the letters A to Z (in shifted order).
5. Although there are 26 key rows shown, you will only use as many keys (different alphabets) as
there are unique letters in the key string, here just 5 keys, {L, E, M, O, N} .
6. For successive letters of the message, we are going to take successive letters of the key string,
and encipher each message letter using its corresponding key row. Choose the next letter of the
key, go along that row to find the column heading that matches the message character; the letter at
the intersection of [key-row, msg-col] is the enciphered letter.
7. ]The first letter of the plaintext, A, is paired with L, the first letter of the key. So use row L and
column A of the Vignere square, namely L. Similarly, for the second letter of the plaintext, the
second letter of the key is used; the letter at row E and column T is X. The rest of the plaintext is
enciphered in a similar fashion



17 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Plaintext: ATTACKATDAWN
Key: LEMONLEMONLE
Ciphertext: LXFOPVEFRNHR


























Result:

Thus the Java program to implement substitution and transposition techniques using vignere cipher
algorithm was executed successfully

Outcome:
Thus the outcome of vignere cipher has been attained.

Application:

Communicating the messages in between the users with privacy.



18 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(e)

IMPLEMENTATION RAIL FENCE TRANSFORMATION TECHNIQUES

Aim:

To write a java program to implement rail fence algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. In the rail fence cipher, the plaintext is written downwards and diagonally on successive "rails" of an
imaginary fence, then moving up when we reach the bottom rail.
2. When we reach the top rail, the message is written downwards again until the whole plaintext is
written out. The message is then read off in rows.
3. Write down the plain text message as a sequence of diagonals.
4. Read the plain text written in Step 1 as a sequence of rows.























19 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:



























Result:

Thus the Java program to implement substitution and transposition techniques using rail fence
algorithm was executed successfully.
Outcome:
Thus the outcome of rail fence has been attained.

Application:

Communicating the messages in between the users with privacy.

20 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00



1. What is public-key cryptography?
2. What is block cipher?
3. What is stream cipher?
4. Name a most widely used stream cipher.
5. What are the differences among encoding, encryption and hashing?
6. What are Brute Force Attacks?
7. What is the length of key in playfair cipher?
8. What is the length of matrix in playfair cipher?
9. What is the length of key in hill cipher?
10. What is the length of key in caesar cipher?
11. What is the length of key in monoalphabetic cipher?
12. What is the length of key in one time pad cipher?
13. What is the length of key in polyalphabetic cipher?
14. What is the length of key in railfence cipher?


















Viva-voce


21 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(a)

IMPLEMENTATION OF DES


Aim:
To write a program to implement DES algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. Firstly, we need to process the key.
2. Get a 64-bit key from the user. (Every 8th bit is considered a parity bit. For a key to have correct parity,
each byte should contain an odd number of "1" bits.).
3. Calculate the key schedule.
4. Perform the following permutation on the 64-bit key.
5. Split the permuted key into two halves. The first 28 bits are called C[0] and the last 28 bits are called
D[0].
6. Calculate the 16 subkeys. Start with i = 1. Perform one or two circular left shifts on both C[i-1] and D[i-1]
to get C[i] and D[i], respectively. The number of shifts per iteration are given below:
Iteration # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Left Shifts 1 1 2 2 2 2 2 2 1 2 2 2 2 2 2 1
7. Permute the concatenation C[i]D[i] as indicated below. This will yield K[i], which is 48 bits long.
Permuted Choice 2 (PC-2).
8. Loop back to 1.2.3.1 until K[16] has been calculated. Process a 64-bit data block.
9. Get a 64-bit data block. If the block is shorter than 64 bits, it should be padded as appropriate for the
application.
10. Perform the following permutation on the data block called Initial Permutation (IP).





22 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Input.txt
JavaCode
encrypted.txt
?w~Z5??&??E
decrypted.txt
JavaCode




























Result:
Thus the Java program to implement cryptographic algorithm using DES algorithm was executed
successfully
Outcome:
Thus the outcome of DES has been attained.

Application:

Developing any private application with high security.



23 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(b)

IMPLEMENTATION OF RSA ALGORITHM

Aim:

To write a program to implement RSA algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Generate two large random primes, P and Q, of approximately equal size.
2. Compute N = P ?Q.
3. Compute Z = (P-1) ?(Q-1).
4. Choose an integer E, 1 < E < Z, such that GCD (E, Z) = 1.
5. Compute the secret exponent D, 1 < D < Z, such that E ?D ? 1 (mod Z).
6. The public key is (N, E) and the private key is (N, D).

An example of RSA encryption :

1. Select primes P=11, Q=3
2. N = P ?Q = 11 ?3 = 33
Z = (P-1) ? (Q-1) = 10 ?2 = 20
3. Lets choose E=3
Check GCD(E, P-1) = GCD(3, 10) = 1 (i.e. 3 and 10 have no common factors except 1),
and check GCD(E, Q-1) = GCD(3, 2) = 1, therefore GCD(E, Z) = GCD(3, 20) = 1
4. Compute D such that E x D ? 1 (mod Z)
Compute D = E
^-1
mod Z = 3
^-1
mod 20
Find a value for D such that Z divides ((E x D)-1)
Find D such that 20 divides 3D-1
Simple testing (D = 1, 2, ...) gives D = 7
Check: (E ?D)-1 = 3.7 - 1 = 20, which is divisible by Z
5. Public key = (N, E) = (33, 3) and Private key = (N, D) = (33, 7)

Now say we want to encrypt the message m = 7,
Cipher code = M
^E
mod N
= 7
^3
mod 33
= 343 mod 33
= 13
Hence the ciphertext c = 13
FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.


























15 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter a 3 letter string: hai
Encrypted string is :fdx
Inverse Matrix is :
0.083333336 0.41666666 -0.33333334
-0.41666666 -0.083333336 0.6666667
0.5833333 -0.083333336 -0.33333334
Decrypted string is :hai























Result:

Thus the Java program to implement substitution and transposition techniques using hill cipher
algorithm was executed successfully

Outcome:
Thus the outcome of hill cipher has been attained.

Application:

Communicating the messages in between the users with trust using above algorithm.



16 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(d)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES VIGNERE CIPHER


Aim:
To write a java program to implement vignere cipher

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm :

1. A vignere Square or vignere table consists of the alphabet written out 26 times in different rows,
each alphabet shifted cyclically to the left compared to the previous alphabet, corresponding to the
26 possible Caesar ciphers.
2. At different points in the encryption process, the cipher uses a different alphabet from one of the
rows. The alphabet used at each point depends on a repeating keyword.
3. The person sending the message to be encrypted (eg. attackatdawn) chooses a keyword and
repeats it until it matches the length of the plaintext, for example, the keyword lemon, the cipher
key will be lemonlemonle.
4. Using a VignereSquare and a CipherKey each row starts with a key letter. The remainder of the
row holds the letters A to Z (in shifted order).
5. Although there are 26 key rows shown, you will only use as many keys (different alphabets) as
there are unique letters in the key string, here just 5 keys, {L, E, M, O, N} .
6. For successive letters of the message, we are going to take successive letters of the key string,
and encipher each message letter using its corresponding key row. Choose the next letter of the
key, go along that row to find the column heading that matches the message character; the letter at
the intersection of [key-row, msg-col] is the enciphered letter.
7. ]The first letter of the plaintext, A, is paired with L, the first letter of the key. So use row L and
column A of the Vignere square, namely L. Similarly, for the second letter of the plaintext, the
second letter of the key is used; the letter at row E and column T is X. The rest of the plaintext is
enciphered in a similar fashion



17 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Plaintext: ATTACKATDAWN
Key: LEMONLEMONLE
Ciphertext: LXFOPVEFRNHR


























Result:

Thus the Java program to implement substitution and transposition techniques using vignere cipher
algorithm was executed successfully

Outcome:
Thus the outcome of vignere cipher has been attained.

Application:

Communicating the messages in between the users with privacy.



18 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(e)

IMPLEMENTATION RAIL FENCE TRANSFORMATION TECHNIQUES

Aim:

To write a java program to implement rail fence algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. In the rail fence cipher, the plaintext is written downwards and diagonally on successive "rails" of an
imaginary fence, then moving up when we reach the bottom rail.
2. When we reach the top rail, the message is written downwards again until the whole plaintext is
written out. The message is then read off in rows.
3. Write down the plain text message as a sequence of diagonals.
4. Read the plain text written in Step 1 as a sequence of rows.























19 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:



























Result:

Thus the Java program to implement substitution and transposition techniques using rail fence
algorithm was executed successfully.
Outcome:
Thus the outcome of rail fence has been attained.

Application:

Communicating the messages in between the users with privacy.

20 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00



1. What is public-key cryptography?
2. What is block cipher?
3. What is stream cipher?
4. Name a most widely used stream cipher.
5. What are the differences among encoding, encryption and hashing?
6. What are Brute Force Attacks?
7. What is the length of key in playfair cipher?
8. What is the length of matrix in playfair cipher?
9. What is the length of key in hill cipher?
10. What is the length of key in caesar cipher?
11. What is the length of key in monoalphabetic cipher?
12. What is the length of key in one time pad cipher?
13. What is the length of key in polyalphabetic cipher?
14. What is the length of key in railfence cipher?


















Viva-voce


21 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(a)

IMPLEMENTATION OF DES


Aim:
To write a program to implement DES algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. Firstly, we need to process the key.
2. Get a 64-bit key from the user. (Every 8th bit is considered a parity bit. For a key to have correct parity,
each byte should contain an odd number of "1" bits.).
3. Calculate the key schedule.
4. Perform the following permutation on the 64-bit key.
5. Split the permuted key into two halves. The first 28 bits are called C[0] and the last 28 bits are called
D[0].
6. Calculate the 16 subkeys. Start with i = 1. Perform one or two circular left shifts on both C[i-1] and D[i-1]
to get C[i] and D[i], respectively. The number of shifts per iteration are given below:
Iteration # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Left Shifts 1 1 2 2 2 2 2 2 1 2 2 2 2 2 2 1
7. Permute the concatenation C[i]D[i] as indicated below. This will yield K[i], which is 48 bits long.
Permuted Choice 2 (PC-2).
8. Loop back to 1.2.3.1 until K[16] has been calculated. Process a 64-bit data block.
9. Get a 64-bit data block. If the block is shorter than 64 bits, it should be padded as appropriate for the
application.
10. Perform the following permutation on the data block called Initial Permutation (IP).





22 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Input.txt
JavaCode
encrypted.txt
?w~Z5??&??E
decrypted.txt
JavaCode




























Result:
Thus the Java program to implement cryptographic algorithm using DES algorithm was executed
successfully
Outcome:
Thus the outcome of DES has been attained.

Application:

Developing any private application with high security.



23 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(b)

IMPLEMENTATION OF RSA ALGORITHM

Aim:

To write a program to implement RSA algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Generate two large random primes, P and Q, of approximately equal size.
2. Compute N = P ?Q.
3. Compute Z = (P-1) ?(Q-1).
4. Choose an integer E, 1 < E < Z, such that GCD (E, Z) = 1.
5. Compute the secret exponent D, 1 < D < Z, such that E ?D ? 1 (mod Z).
6. The public key is (N, E) and the private key is (N, D).

An example of RSA encryption :

1. Select primes P=11, Q=3
2. N = P ?Q = 11 ?3 = 33
Z = (P-1) ? (Q-1) = 10 ?2 = 20
3. Lets choose E=3
Check GCD(E, P-1) = GCD(3, 10) = 1 (i.e. 3 and 10 have no common factors except 1),
and check GCD(E, Q-1) = GCD(3, 2) = 1, therefore GCD(E, Z) = GCD(3, 20) = 1
4. Compute D such that E x D ? 1 (mod Z)
Compute D = E
^-1
mod Z = 3
^-1
mod 20
Find a value for D such that Z divides ((E x D)-1)
Find D such that 20 divides 3D-1
Simple testing (D = 1, 2, ...) gives D = 7
Check: (E ?D)-1 = 3.7 - 1 = 20, which is divisible by Z
5. Public key = (N, E) = (33, 3) and Private key = (N, D) = (33, 7)

Now say we want to encrypt the message m = 7,
Cipher code = M
^E
mod N
= 7
^3
mod 33
= 343 mod 33
= 13
Hence the ciphertext c = 13

24 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


To check decryption we compute Message? = C
^D
mod N
= 13
^7
mod 33
= 7

































FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.


























15 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter a 3 letter string: hai
Encrypted string is :fdx
Inverse Matrix is :
0.083333336 0.41666666 -0.33333334
-0.41666666 -0.083333336 0.6666667
0.5833333 -0.083333336 -0.33333334
Decrypted string is :hai























Result:

Thus the Java program to implement substitution and transposition techniques using hill cipher
algorithm was executed successfully

Outcome:
Thus the outcome of hill cipher has been attained.

Application:

Communicating the messages in between the users with trust using above algorithm.



16 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(d)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES VIGNERE CIPHER


Aim:
To write a java program to implement vignere cipher

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm :

1. A vignere Square or vignere table consists of the alphabet written out 26 times in different rows,
each alphabet shifted cyclically to the left compared to the previous alphabet, corresponding to the
26 possible Caesar ciphers.
2. At different points in the encryption process, the cipher uses a different alphabet from one of the
rows. The alphabet used at each point depends on a repeating keyword.
3. The person sending the message to be encrypted (eg. attackatdawn) chooses a keyword and
repeats it until it matches the length of the plaintext, for example, the keyword lemon, the cipher
key will be lemonlemonle.
4. Using a VignereSquare and a CipherKey each row starts with a key letter. The remainder of the
row holds the letters A to Z (in shifted order).
5. Although there are 26 key rows shown, you will only use as many keys (different alphabets) as
there are unique letters in the key string, here just 5 keys, {L, E, M, O, N} .
6. For successive letters of the message, we are going to take successive letters of the key string,
and encipher each message letter using its corresponding key row. Choose the next letter of the
key, go along that row to find the column heading that matches the message character; the letter at
the intersection of [key-row, msg-col] is the enciphered letter.
7. ]The first letter of the plaintext, A, is paired with L, the first letter of the key. So use row L and
column A of the Vignere square, namely L. Similarly, for the second letter of the plaintext, the
second letter of the key is used; the letter at row E and column T is X. The rest of the plaintext is
enciphered in a similar fashion



17 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Plaintext: ATTACKATDAWN
Key: LEMONLEMONLE
Ciphertext: LXFOPVEFRNHR


























Result:

Thus the Java program to implement substitution and transposition techniques using vignere cipher
algorithm was executed successfully

Outcome:
Thus the outcome of vignere cipher has been attained.

Application:

Communicating the messages in between the users with privacy.



18 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(e)

IMPLEMENTATION RAIL FENCE TRANSFORMATION TECHNIQUES

Aim:

To write a java program to implement rail fence algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. In the rail fence cipher, the plaintext is written downwards and diagonally on successive "rails" of an
imaginary fence, then moving up when we reach the bottom rail.
2. When we reach the top rail, the message is written downwards again until the whole plaintext is
written out. The message is then read off in rows.
3. Write down the plain text message as a sequence of diagonals.
4. Read the plain text written in Step 1 as a sequence of rows.























19 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:



























Result:

Thus the Java program to implement substitution and transposition techniques using rail fence
algorithm was executed successfully.
Outcome:
Thus the outcome of rail fence has been attained.

Application:

Communicating the messages in between the users with privacy.

20 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00



1. What is public-key cryptography?
2. What is block cipher?
3. What is stream cipher?
4. Name a most widely used stream cipher.
5. What are the differences among encoding, encryption and hashing?
6. What are Brute Force Attacks?
7. What is the length of key in playfair cipher?
8. What is the length of matrix in playfair cipher?
9. What is the length of key in hill cipher?
10. What is the length of key in caesar cipher?
11. What is the length of key in monoalphabetic cipher?
12. What is the length of key in one time pad cipher?
13. What is the length of key in polyalphabetic cipher?
14. What is the length of key in railfence cipher?


















Viva-voce


21 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(a)

IMPLEMENTATION OF DES


Aim:
To write a program to implement DES algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. Firstly, we need to process the key.
2. Get a 64-bit key from the user. (Every 8th bit is considered a parity bit. For a key to have correct parity,
each byte should contain an odd number of "1" bits.).
3. Calculate the key schedule.
4. Perform the following permutation on the 64-bit key.
5. Split the permuted key into two halves. The first 28 bits are called C[0] and the last 28 bits are called
D[0].
6. Calculate the 16 subkeys. Start with i = 1. Perform one or two circular left shifts on both C[i-1] and D[i-1]
to get C[i] and D[i], respectively. The number of shifts per iteration are given below:
Iteration # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Left Shifts 1 1 2 2 2 2 2 2 1 2 2 2 2 2 2 1
7. Permute the concatenation C[i]D[i] as indicated below. This will yield K[i], which is 48 bits long.
Permuted Choice 2 (PC-2).
8. Loop back to 1.2.3.1 until K[16] has been calculated. Process a 64-bit data block.
9. Get a 64-bit data block. If the block is shorter than 64 bits, it should be padded as appropriate for the
application.
10. Perform the following permutation on the data block called Initial Permutation (IP).





22 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Input.txt
JavaCode
encrypted.txt
?w~Z5??&??E
decrypted.txt
JavaCode




























Result:
Thus the Java program to implement cryptographic algorithm using DES algorithm was executed
successfully
Outcome:
Thus the outcome of DES has been attained.

Application:

Developing any private application with high security.



23 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(b)

IMPLEMENTATION OF RSA ALGORITHM

Aim:

To write a program to implement RSA algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Generate two large random primes, P and Q, of approximately equal size.
2. Compute N = P ?Q.
3. Compute Z = (P-1) ?(Q-1).
4. Choose an integer E, 1 < E < Z, such that GCD (E, Z) = 1.
5. Compute the secret exponent D, 1 < D < Z, such that E ?D ? 1 (mod Z).
6. The public key is (N, E) and the private key is (N, D).

An example of RSA encryption :

1. Select primes P=11, Q=3
2. N = P ?Q = 11 ?3 = 33
Z = (P-1) ? (Q-1) = 10 ?2 = 20
3. Lets choose E=3
Check GCD(E, P-1) = GCD(3, 10) = 1 (i.e. 3 and 10 have no common factors except 1),
and check GCD(E, Q-1) = GCD(3, 2) = 1, therefore GCD(E, Z) = GCD(3, 20) = 1
4. Compute D such that E x D ? 1 (mod Z)
Compute D = E
^-1
mod Z = 3
^-1
mod 20
Find a value for D such that Z divides ((E x D)-1)
Find D such that 20 divides 3D-1
Simple testing (D = 1, 2, ...) gives D = 7
Check: (E ?D)-1 = 3.7 - 1 = 20, which is divisible by Z
5. Public key = (N, E) = (33, 3) and Private key = (N, D) = (33, 7)

Now say we want to encrypt the message m = 7,
Cipher code = M
^E
mod N
= 7
^3
mod 33
= 343 mod 33
= 13
Hence the ciphertext c = 13

24 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


To check decryption we compute Message? = C
^D
mod N
= 13
^7
mod 33
= 7


































25 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter a Prime number: 5
Enter another prime number: 11
Encryption keys are: 33, 55
Decryption keys are: 17, 55






























Result:

Thus the Java program to implement cryptographic algorithm using RSA algorithm was executed
successfully

Outcome:
Thus the outcome of RSA algorithm has been attained.

Application:

It?s a public key cryptography used in banking application.


FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.


























15 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter a 3 letter string: hai
Encrypted string is :fdx
Inverse Matrix is :
0.083333336 0.41666666 -0.33333334
-0.41666666 -0.083333336 0.6666667
0.5833333 -0.083333336 -0.33333334
Decrypted string is :hai























Result:

Thus the Java program to implement substitution and transposition techniques using hill cipher
algorithm was executed successfully

Outcome:
Thus the outcome of hill cipher has been attained.

Application:

Communicating the messages in between the users with trust using above algorithm.



16 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(d)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES VIGNERE CIPHER


Aim:
To write a java program to implement vignere cipher

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm :

1. A vignere Square or vignere table consists of the alphabet written out 26 times in different rows,
each alphabet shifted cyclically to the left compared to the previous alphabet, corresponding to the
26 possible Caesar ciphers.
2. At different points in the encryption process, the cipher uses a different alphabet from one of the
rows. The alphabet used at each point depends on a repeating keyword.
3. The person sending the message to be encrypted (eg. attackatdawn) chooses a keyword and
repeats it until it matches the length of the plaintext, for example, the keyword lemon, the cipher
key will be lemonlemonle.
4. Using a VignereSquare and a CipherKey each row starts with a key letter. The remainder of the
row holds the letters A to Z (in shifted order).
5. Although there are 26 key rows shown, you will only use as many keys (different alphabets) as
there are unique letters in the key string, here just 5 keys, {L, E, M, O, N} .
6. For successive letters of the message, we are going to take successive letters of the key string,
and encipher each message letter using its corresponding key row. Choose the next letter of the
key, go along that row to find the column heading that matches the message character; the letter at
the intersection of [key-row, msg-col] is the enciphered letter.
7. ]The first letter of the plaintext, A, is paired with L, the first letter of the key. So use row L and
column A of the Vignere square, namely L. Similarly, for the second letter of the plaintext, the
second letter of the key is used; the letter at row E and column T is X. The rest of the plaintext is
enciphered in a similar fashion



17 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Plaintext: ATTACKATDAWN
Key: LEMONLEMONLE
Ciphertext: LXFOPVEFRNHR


























Result:

Thus the Java program to implement substitution and transposition techniques using vignere cipher
algorithm was executed successfully

Outcome:
Thus the outcome of vignere cipher has been attained.

Application:

Communicating the messages in between the users with privacy.



18 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(e)

IMPLEMENTATION RAIL FENCE TRANSFORMATION TECHNIQUES

Aim:

To write a java program to implement rail fence algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. In the rail fence cipher, the plaintext is written downwards and diagonally on successive "rails" of an
imaginary fence, then moving up when we reach the bottom rail.
2. When we reach the top rail, the message is written downwards again until the whole plaintext is
written out. The message is then read off in rows.
3. Write down the plain text message as a sequence of diagonals.
4. Read the plain text written in Step 1 as a sequence of rows.























19 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:



























Result:

Thus the Java program to implement substitution and transposition techniques using rail fence
algorithm was executed successfully.
Outcome:
Thus the outcome of rail fence has been attained.

Application:

Communicating the messages in between the users with privacy.

20 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00



1. What is public-key cryptography?
2. What is block cipher?
3. What is stream cipher?
4. Name a most widely used stream cipher.
5. What are the differences among encoding, encryption and hashing?
6. What are Brute Force Attacks?
7. What is the length of key in playfair cipher?
8. What is the length of matrix in playfair cipher?
9. What is the length of key in hill cipher?
10. What is the length of key in caesar cipher?
11. What is the length of key in monoalphabetic cipher?
12. What is the length of key in one time pad cipher?
13. What is the length of key in polyalphabetic cipher?
14. What is the length of key in railfence cipher?


















Viva-voce


21 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(a)

IMPLEMENTATION OF DES


Aim:
To write a program to implement DES algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. Firstly, we need to process the key.
2. Get a 64-bit key from the user. (Every 8th bit is considered a parity bit. For a key to have correct parity,
each byte should contain an odd number of "1" bits.).
3. Calculate the key schedule.
4. Perform the following permutation on the 64-bit key.
5. Split the permuted key into two halves. The first 28 bits are called C[0] and the last 28 bits are called
D[0].
6. Calculate the 16 subkeys. Start with i = 1. Perform one or two circular left shifts on both C[i-1] and D[i-1]
to get C[i] and D[i], respectively. The number of shifts per iteration are given below:
Iteration # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Left Shifts 1 1 2 2 2 2 2 2 1 2 2 2 2 2 2 1
7. Permute the concatenation C[i]D[i] as indicated below. This will yield K[i], which is 48 bits long.
Permuted Choice 2 (PC-2).
8. Loop back to 1.2.3.1 until K[16] has been calculated. Process a 64-bit data block.
9. Get a 64-bit data block. If the block is shorter than 64 bits, it should be padded as appropriate for the
application.
10. Perform the following permutation on the data block called Initial Permutation (IP).





22 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Input.txt
JavaCode
encrypted.txt
?w~Z5??&??E
decrypted.txt
JavaCode




























Result:
Thus the Java program to implement cryptographic algorithm using DES algorithm was executed
successfully
Outcome:
Thus the outcome of DES has been attained.

Application:

Developing any private application with high security.



23 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(b)

IMPLEMENTATION OF RSA ALGORITHM

Aim:

To write a program to implement RSA algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Generate two large random primes, P and Q, of approximately equal size.
2. Compute N = P ?Q.
3. Compute Z = (P-1) ?(Q-1).
4. Choose an integer E, 1 < E < Z, such that GCD (E, Z) = 1.
5. Compute the secret exponent D, 1 < D < Z, such that E ?D ? 1 (mod Z).
6. The public key is (N, E) and the private key is (N, D).

An example of RSA encryption :

1. Select primes P=11, Q=3
2. N = P ?Q = 11 ?3 = 33
Z = (P-1) ? (Q-1) = 10 ?2 = 20
3. Lets choose E=3
Check GCD(E, P-1) = GCD(3, 10) = 1 (i.e. 3 and 10 have no common factors except 1),
and check GCD(E, Q-1) = GCD(3, 2) = 1, therefore GCD(E, Z) = GCD(3, 20) = 1
4. Compute D such that E x D ? 1 (mod Z)
Compute D = E
^-1
mod Z = 3
^-1
mod 20
Find a value for D such that Z divides ((E x D)-1)
Find D such that 20 divides 3D-1
Simple testing (D = 1, 2, ...) gives D = 7
Check: (E ?D)-1 = 3.7 - 1 = 20, which is divisible by Z
5. Public key = (N, E) = (33, 3) and Private key = (N, D) = (33, 7)

Now say we want to encrypt the message m = 7,
Cipher code = M
^E
mod N
= 7
^3
mod 33
= 343 mod 33
= 13
Hence the ciphertext c = 13

24 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


To check decryption we compute Message? = C
^D
mod N
= 13
^7
mod 33
= 7


































25 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter a Prime number: 5
Enter another prime number: 11
Encryption keys are: 33, 55
Decryption keys are: 17, 55






























Result:

Thus the Java program to implement cryptographic algorithm using RSA algorithm was executed
successfully

Outcome:
Thus the outcome of RSA algorithm has been attained.

Application:

It?s a public key cryptography used in banking application.



26 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(c)

IMPLEMENTATION OF DIFFIEE-HELLMAN

Aim:
To write a program to implement Diffiee- hellman key exchange algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Diffiee-Hellman key exchange (DH) is a cryptographic protocol that allows two parties that have no
prior knowledge of each other to jointly establish a shared secret key.
2. The algorithm generates a public key and a private key for the client.
3. Create a KeyPairGenerator Object that generates private/public keys for the DH algorithm, using the
getInstance(String algortihm) API method.
4. Initialize the KeyGenerator so as to generate keys with a 1024-bit length, using the initialize(int
keysize) API method.
5. Create a KeyPair Object , with the genKeyPair() API method, that generates the key pair.
6. Create the PrivateKey and PublicKey Objects of the key pair, with the getPrivate() and getPublic() API
methods of the KeyPair.
7. Return for both keys the names of their primary encoded formats, using for both their getformat() ?PI
methods.


















FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.


























15 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter a 3 letter string: hai
Encrypted string is :fdx
Inverse Matrix is :
0.083333336 0.41666666 -0.33333334
-0.41666666 -0.083333336 0.6666667
0.5833333 -0.083333336 -0.33333334
Decrypted string is :hai























Result:

Thus the Java program to implement substitution and transposition techniques using hill cipher
algorithm was executed successfully

Outcome:
Thus the outcome of hill cipher has been attained.

Application:

Communicating the messages in between the users with trust using above algorithm.



16 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(d)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES VIGNERE CIPHER


Aim:
To write a java program to implement vignere cipher

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm :

1. A vignere Square or vignere table consists of the alphabet written out 26 times in different rows,
each alphabet shifted cyclically to the left compared to the previous alphabet, corresponding to the
26 possible Caesar ciphers.
2. At different points in the encryption process, the cipher uses a different alphabet from one of the
rows. The alphabet used at each point depends on a repeating keyword.
3. The person sending the message to be encrypted (eg. attackatdawn) chooses a keyword and
repeats it until it matches the length of the plaintext, for example, the keyword lemon, the cipher
key will be lemonlemonle.
4. Using a VignereSquare and a CipherKey each row starts with a key letter. The remainder of the
row holds the letters A to Z (in shifted order).
5. Although there are 26 key rows shown, you will only use as many keys (different alphabets) as
there are unique letters in the key string, here just 5 keys, {L, E, M, O, N} .
6. For successive letters of the message, we are going to take successive letters of the key string,
and encipher each message letter using its corresponding key row. Choose the next letter of the
key, go along that row to find the column heading that matches the message character; the letter at
the intersection of [key-row, msg-col] is the enciphered letter.
7. ]The first letter of the plaintext, A, is paired with L, the first letter of the key. So use row L and
column A of the Vignere square, namely L. Similarly, for the second letter of the plaintext, the
second letter of the key is used; the letter at row E and column T is X. The rest of the plaintext is
enciphered in a similar fashion



17 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Plaintext: ATTACKATDAWN
Key: LEMONLEMONLE
Ciphertext: LXFOPVEFRNHR


























Result:

Thus the Java program to implement substitution and transposition techniques using vignere cipher
algorithm was executed successfully

Outcome:
Thus the outcome of vignere cipher has been attained.

Application:

Communicating the messages in between the users with privacy.



18 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(e)

IMPLEMENTATION RAIL FENCE TRANSFORMATION TECHNIQUES

Aim:

To write a java program to implement rail fence algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. In the rail fence cipher, the plaintext is written downwards and diagonally on successive "rails" of an
imaginary fence, then moving up when we reach the bottom rail.
2. When we reach the top rail, the message is written downwards again until the whole plaintext is
written out. The message is then read off in rows.
3. Write down the plain text message as a sequence of diagonals.
4. Read the plain text written in Step 1 as a sequence of rows.























19 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:



























Result:

Thus the Java program to implement substitution and transposition techniques using rail fence
algorithm was executed successfully.
Outcome:
Thus the outcome of rail fence has been attained.

Application:

Communicating the messages in between the users with privacy.

20 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00



1. What is public-key cryptography?
2. What is block cipher?
3. What is stream cipher?
4. Name a most widely used stream cipher.
5. What are the differences among encoding, encryption and hashing?
6. What are Brute Force Attacks?
7. What is the length of key in playfair cipher?
8. What is the length of matrix in playfair cipher?
9. What is the length of key in hill cipher?
10. What is the length of key in caesar cipher?
11. What is the length of key in monoalphabetic cipher?
12. What is the length of key in one time pad cipher?
13. What is the length of key in polyalphabetic cipher?
14. What is the length of key in railfence cipher?


















Viva-voce


21 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(a)

IMPLEMENTATION OF DES


Aim:
To write a program to implement DES algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. Firstly, we need to process the key.
2. Get a 64-bit key from the user. (Every 8th bit is considered a parity bit. For a key to have correct parity,
each byte should contain an odd number of "1" bits.).
3. Calculate the key schedule.
4. Perform the following permutation on the 64-bit key.
5. Split the permuted key into two halves. The first 28 bits are called C[0] and the last 28 bits are called
D[0].
6. Calculate the 16 subkeys. Start with i = 1. Perform one or two circular left shifts on both C[i-1] and D[i-1]
to get C[i] and D[i], respectively. The number of shifts per iteration are given below:
Iteration # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Left Shifts 1 1 2 2 2 2 2 2 1 2 2 2 2 2 2 1
7. Permute the concatenation C[i]D[i] as indicated below. This will yield K[i], which is 48 bits long.
Permuted Choice 2 (PC-2).
8. Loop back to 1.2.3.1 until K[16] has been calculated. Process a 64-bit data block.
9. Get a 64-bit data block. If the block is shorter than 64 bits, it should be padded as appropriate for the
application.
10. Perform the following permutation on the data block called Initial Permutation (IP).





22 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Input.txt
JavaCode
encrypted.txt
?w~Z5??&??E
decrypted.txt
JavaCode




























Result:
Thus the Java program to implement cryptographic algorithm using DES algorithm was executed
successfully
Outcome:
Thus the outcome of DES has been attained.

Application:

Developing any private application with high security.



23 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(b)

IMPLEMENTATION OF RSA ALGORITHM

Aim:

To write a program to implement RSA algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Generate two large random primes, P and Q, of approximately equal size.
2. Compute N = P ?Q.
3. Compute Z = (P-1) ?(Q-1).
4. Choose an integer E, 1 < E < Z, such that GCD (E, Z) = 1.
5. Compute the secret exponent D, 1 < D < Z, such that E ?D ? 1 (mod Z).
6. The public key is (N, E) and the private key is (N, D).

An example of RSA encryption :

1. Select primes P=11, Q=3
2. N = P ?Q = 11 ?3 = 33
Z = (P-1) ? (Q-1) = 10 ?2 = 20
3. Lets choose E=3
Check GCD(E, P-1) = GCD(3, 10) = 1 (i.e. 3 and 10 have no common factors except 1),
and check GCD(E, Q-1) = GCD(3, 2) = 1, therefore GCD(E, Z) = GCD(3, 20) = 1
4. Compute D such that E x D ? 1 (mod Z)
Compute D = E
^-1
mod Z = 3
^-1
mod 20
Find a value for D such that Z divides ((E x D)-1)
Find D such that 20 divides 3D-1
Simple testing (D = 1, 2, ...) gives D = 7
Check: (E ?D)-1 = 3.7 - 1 = 20, which is divisible by Z
5. Public key = (N, E) = (33, 3) and Private key = (N, D) = (33, 7)

Now say we want to encrypt the message m = 7,
Cipher code = M
^E
mod N
= 7
^3
mod 33
= 343 mod 33
= 13
Hence the ciphertext c = 13

24 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


To check decryption we compute Message? = C
^D
mod N
= 13
^7
mod 33
= 7


































25 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter a Prime number: 5
Enter another prime number: 11
Encryption keys are: 33, 55
Decryption keys are: 17, 55






























Result:

Thus the Java program to implement cryptographic algorithm using RSA algorithm was executed
successfully

Outcome:
Thus the outcome of RSA algorithm has been attained.

Application:

It?s a public key cryptography used in banking application.



26 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(c)

IMPLEMENTATION OF DIFFIEE-HELLMAN

Aim:
To write a program to implement Diffiee- hellman key exchange algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Diffiee-Hellman key exchange (DH) is a cryptographic protocol that allows two parties that have no
prior knowledge of each other to jointly establish a shared secret key.
2. The algorithm generates a public key and a private key for the client.
3. Create a KeyPairGenerator Object that generates private/public keys for the DH algorithm, using the
getInstance(String algortihm) API method.
4. Initialize the KeyGenerator so as to generate keys with a 1024-bit length, using the initialize(int
keysize) API method.
5. Create a KeyPair Object , with the genKeyPair() API method, that generates the key pair.
6. Create the PrivateKey and PublicKey Objects of the key pair, with the getPrivate() and getPublic() API
methods of the KeyPair.
7. Return for both keys the names of their primary encoded formats, using for both their getformat() ?PI
methods.



















27 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Private key format :PKCS#8 Diffie-Helman Private key parameters are:SunJCE Diffie-Hellman Private
Key:
x: a391eed7 d10d95d3 3952005c 117c56ad a3d686c5 8a60d504 2fde2db6 11686543 0025c0b7
e038f63f cb82151b a7cb24fb f6c2ab69 9c517155 67818cec 782cf977
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf f6cb9b55 f26660b7 6b9950a5 a49f9fe8 c24fbba9 d7feb7c6 1bf83b57 e7c6a8a6
150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267
5159578e bad4594f e6710710 8180b449 167123e8 4c281613 b7cf0932 8cc8a6e1
3c167a8b 547c8d28 e0a3ae1e 2bb3a675 916ea37f 0bfa2135 62f1fb62 7a01243b
cca4f1be a8519089 a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512
Public key format :X.509 Diffie-Helman Public key parameters are:SunJCE Diffie-Hellman Public Key:
y: d3fabd76 139865f1 63507aa2 6a9480a9 ba0e6979 f335ee25 2e26762c f7df3af9 d7ea612e
7540f071 f50051ae 7d061113 d0cc4ae1 03406d44 59a93dcd 6ec827d1 06edb2f0 02d48ee5 f2c9cb94
785f39df cc88ec65 5a224a1c 318b51fe 9c40445b fedb5f14 3fe83f51 82d0357c 1004652e 93c9ad81
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf c5f5ba30 f6cb9b55 6cd7813b a49f9fe8 047b1022 c24fbba9 d7feb7c6 1bf83b57
e7c6a8a6 150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267 5159578e
bad4594f e6710710 8180b449 167123e8 b7cf0932 8cc8a6e1 c167a8b 547c8d28 e0a3ae1e 2bb3a675
916ea37f 0bfa2135 62f1fb62 ca4f1be a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512

Result:

Thus the program to implement cryptographic algorithm using diffiee-hellman algorithm was executed
successfully.

Outcome:
Thus the outcome of diffiee-hellman has been attained.

Application:

Communicating the message in between two parties.


FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.


























15 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter a 3 letter string: hai
Encrypted string is :fdx
Inverse Matrix is :
0.083333336 0.41666666 -0.33333334
-0.41666666 -0.083333336 0.6666667
0.5833333 -0.083333336 -0.33333334
Decrypted string is :hai























Result:

Thus the Java program to implement substitution and transposition techniques using hill cipher
algorithm was executed successfully

Outcome:
Thus the outcome of hill cipher has been attained.

Application:

Communicating the messages in between the users with trust using above algorithm.



16 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(d)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES VIGNERE CIPHER


Aim:
To write a java program to implement vignere cipher

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm :

1. A vignere Square or vignere table consists of the alphabet written out 26 times in different rows,
each alphabet shifted cyclically to the left compared to the previous alphabet, corresponding to the
26 possible Caesar ciphers.
2. At different points in the encryption process, the cipher uses a different alphabet from one of the
rows. The alphabet used at each point depends on a repeating keyword.
3. The person sending the message to be encrypted (eg. attackatdawn) chooses a keyword and
repeats it until it matches the length of the plaintext, for example, the keyword lemon, the cipher
key will be lemonlemonle.
4. Using a VignereSquare and a CipherKey each row starts with a key letter. The remainder of the
row holds the letters A to Z (in shifted order).
5. Although there are 26 key rows shown, you will only use as many keys (different alphabets) as
there are unique letters in the key string, here just 5 keys, {L, E, M, O, N} .
6. For successive letters of the message, we are going to take successive letters of the key string,
and encipher each message letter using its corresponding key row. Choose the next letter of the
key, go along that row to find the column heading that matches the message character; the letter at
the intersection of [key-row, msg-col] is the enciphered letter.
7. ]The first letter of the plaintext, A, is paired with L, the first letter of the key. So use row L and
column A of the Vignere square, namely L. Similarly, for the second letter of the plaintext, the
second letter of the key is used; the letter at row E and column T is X. The rest of the plaintext is
enciphered in a similar fashion



17 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Plaintext: ATTACKATDAWN
Key: LEMONLEMONLE
Ciphertext: LXFOPVEFRNHR


























Result:

Thus the Java program to implement substitution and transposition techniques using vignere cipher
algorithm was executed successfully

Outcome:
Thus the outcome of vignere cipher has been attained.

Application:

Communicating the messages in between the users with privacy.



18 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(e)

IMPLEMENTATION RAIL FENCE TRANSFORMATION TECHNIQUES

Aim:

To write a java program to implement rail fence algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. In the rail fence cipher, the plaintext is written downwards and diagonally on successive "rails" of an
imaginary fence, then moving up when we reach the bottom rail.
2. When we reach the top rail, the message is written downwards again until the whole plaintext is
written out. The message is then read off in rows.
3. Write down the plain text message as a sequence of diagonals.
4. Read the plain text written in Step 1 as a sequence of rows.























19 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:



























Result:

Thus the Java program to implement substitution and transposition techniques using rail fence
algorithm was executed successfully.
Outcome:
Thus the outcome of rail fence has been attained.

Application:

Communicating the messages in between the users with privacy.

20 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00



1. What is public-key cryptography?
2. What is block cipher?
3. What is stream cipher?
4. Name a most widely used stream cipher.
5. What are the differences among encoding, encryption and hashing?
6. What are Brute Force Attacks?
7. What is the length of key in playfair cipher?
8. What is the length of matrix in playfair cipher?
9. What is the length of key in hill cipher?
10. What is the length of key in caesar cipher?
11. What is the length of key in monoalphabetic cipher?
12. What is the length of key in one time pad cipher?
13. What is the length of key in polyalphabetic cipher?
14. What is the length of key in railfence cipher?


















Viva-voce


21 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(a)

IMPLEMENTATION OF DES


Aim:
To write a program to implement DES algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. Firstly, we need to process the key.
2. Get a 64-bit key from the user. (Every 8th bit is considered a parity bit. For a key to have correct parity,
each byte should contain an odd number of "1" bits.).
3. Calculate the key schedule.
4. Perform the following permutation on the 64-bit key.
5. Split the permuted key into two halves. The first 28 bits are called C[0] and the last 28 bits are called
D[0].
6. Calculate the 16 subkeys. Start with i = 1. Perform one or two circular left shifts on both C[i-1] and D[i-1]
to get C[i] and D[i], respectively. The number of shifts per iteration are given below:
Iteration # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Left Shifts 1 1 2 2 2 2 2 2 1 2 2 2 2 2 2 1
7. Permute the concatenation C[i]D[i] as indicated below. This will yield K[i], which is 48 bits long.
Permuted Choice 2 (PC-2).
8. Loop back to 1.2.3.1 until K[16] has been calculated. Process a 64-bit data block.
9. Get a 64-bit data block. If the block is shorter than 64 bits, it should be padded as appropriate for the
application.
10. Perform the following permutation on the data block called Initial Permutation (IP).





22 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Input.txt
JavaCode
encrypted.txt
?w~Z5??&??E
decrypted.txt
JavaCode




























Result:
Thus the Java program to implement cryptographic algorithm using DES algorithm was executed
successfully
Outcome:
Thus the outcome of DES has been attained.

Application:

Developing any private application with high security.



23 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(b)

IMPLEMENTATION OF RSA ALGORITHM

Aim:

To write a program to implement RSA algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Generate two large random primes, P and Q, of approximately equal size.
2. Compute N = P ?Q.
3. Compute Z = (P-1) ?(Q-1).
4. Choose an integer E, 1 < E < Z, such that GCD (E, Z) = 1.
5. Compute the secret exponent D, 1 < D < Z, such that E ?D ? 1 (mod Z).
6. The public key is (N, E) and the private key is (N, D).

An example of RSA encryption :

1. Select primes P=11, Q=3
2. N = P ?Q = 11 ?3 = 33
Z = (P-1) ? (Q-1) = 10 ?2 = 20
3. Lets choose E=3
Check GCD(E, P-1) = GCD(3, 10) = 1 (i.e. 3 and 10 have no common factors except 1),
and check GCD(E, Q-1) = GCD(3, 2) = 1, therefore GCD(E, Z) = GCD(3, 20) = 1
4. Compute D such that E x D ? 1 (mod Z)
Compute D = E
^-1
mod Z = 3
^-1
mod 20
Find a value for D such that Z divides ((E x D)-1)
Find D such that 20 divides 3D-1
Simple testing (D = 1, 2, ...) gives D = 7
Check: (E ?D)-1 = 3.7 - 1 = 20, which is divisible by Z
5. Public key = (N, E) = (33, 3) and Private key = (N, D) = (33, 7)

Now say we want to encrypt the message m = 7,
Cipher code = M
^E
mod N
= 7
^3
mod 33
= 343 mod 33
= 13
Hence the ciphertext c = 13

24 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


To check decryption we compute Message? = C
^D
mod N
= 13
^7
mod 33
= 7


































25 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter a Prime number: 5
Enter another prime number: 11
Encryption keys are: 33, 55
Decryption keys are: 17, 55






























Result:

Thus the Java program to implement cryptographic algorithm using RSA algorithm was executed
successfully

Outcome:
Thus the outcome of RSA algorithm has been attained.

Application:

It?s a public key cryptography used in banking application.



26 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(c)

IMPLEMENTATION OF DIFFIEE-HELLMAN

Aim:
To write a program to implement Diffiee- hellman key exchange algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Diffiee-Hellman key exchange (DH) is a cryptographic protocol that allows two parties that have no
prior knowledge of each other to jointly establish a shared secret key.
2. The algorithm generates a public key and a private key for the client.
3. Create a KeyPairGenerator Object that generates private/public keys for the DH algorithm, using the
getInstance(String algortihm) API method.
4. Initialize the KeyGenerator so as to generate keys with a 1024-bit length, using the initialize(int
keysize) API method.
5. Create a KeyPair Object , with the genKeyPair() API method, that generates the key pair.
6. Create the PrivateKey and PublicKey Objects of the key pair, with the getPrivate() and getPublic() API
methods of the KeyPair.
7. Return for both keys the names of their primary encoded formats, using for both their getformat() ?PI
methods.



















27 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Private key format :PKCS#8 Diffie-Helman Private key parameters are:SunJCE Diffie-Hellman Private
Key:
x: a391eed7 d10d95d3 3952005c 117c56ad a3d686c5 8a60d504 2fde2db6 11686543 0025c0b7
e038f63f cb82151b a7cb24fb f6c2ab69 9c517155 67818cec 782cf977
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf f6cb9b55 f26660b7 6b9950a5 a49f9fe8 c24fbba9 d7feb7c6 1bf83b57 e7c6a8a6
150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267
5159578e bad4594f e6710710 8180b449 167123e8 4c281613 b7cf0932 8cc8a6e1
3c167a8b 547c8d28 e0a3ae1e 2bb3a675 916ea37f 0bfa2135 62f1fb62 7a01243b
cca4f1be a8519089 a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512
Public key format :X.509 Diffie-Helman Public key parameters are:SunJCE Diffie-Hellman Public Key:
y: d3fabd76 139865f1 63507aa2 6a9480a9 ba0e6979 f335ee25 2e26762c f7df3af9 d7ea612e
7540f071 f50051ae 7d061113 d0cc4ae1 03406d44 59a93dcd 6ec827d1 06edb2f0 02d48ee5 f2c9cb94
785f39df cc88ec65 5a224a1c 318b51fe 9c40445b fedb5f14 3fe83f51 82d0357c 1004652e 93c9ad81
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf c5f5ba30 f6cb9b55 6cd7813b a49f9fe8 047b1022 c24fbba9 d7feb7c6 1bf83b57
e7c6a8a6 150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267 5159578e
bad4594f e6710710 8180b449 167123e8 b7cf0932 8cc8a6e1 c167a8b 547c8d28 e0a3ae1e 2bb3a675
916ea37f 0bfa2135 62f1fb62 ca4f1be a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512

Result:

Thus the program to implement cryptographic algorithm using diffiee-hellman algorithm was executed
successfully.

Outcome:
Thus the outcome of diffiee-hellman has been attained.

Application:

Communicating the message in between two parties.



28 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(d)

IMPLEMENTATION OF MD5

Aim:
To write a program to implement MD5 algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Append padded bits - The message is padded so that its length is congruent to 448, modulo 512.
Means extended to just 64 bits shy of being of 512 bits long. ? A single ?1? bit is appended to the
message, and then ?0? bits are appended so that the length in bits equals 448 modulo 512.
2. Append length - A 64 bit representation of b is appended to the result of the previous step. The
resulting message has a length that is an exact multiple of 512 bits.
3. Initialize MD Buffer - A four-word buffer (A,B,C,D) is used to compute the message digest. ? Here
each of A,B,C,D, is a 32 bit register. These registers are initialized to the following values in
hexadecimal:
word A: 01 23 45 67 word B: 89 ab cd ef word C: fe dc ba 98 word D: 76 54 32 10
4. Process message in 16-word blocks ? Four auxiliary functions that take as input three 32-bit words
and produce as output one 32-bit word. F(X,Y,Z) = XY v not(X) Z G(X,Y,Z) = XZ v Y not(Z) H(X,Y,Z) =
X xor Y xor Z I(X,Y,Z) = Y xor (X v not(Z)).
5. Process message in 16-word blocks cont ? if the bits of X, Y, and Z are independent and unbiased,
the each bit of F(X,Y,Z), G(X,Y,Z), H(X,Y,Z), and I(X,Y,Z) will be independent and unbiased.













FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.


























15 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter a 3 letter string: hai
Encrypted string is :fdx
Inverse Matrix is :
0.083333336 0.41666666 -0.33333334
-0.41666666 -0.083333336 0.6666667
0.5833333 -0.083333336 -0.33333334
Decrypted string is :hai























Result:

Thus the Java program to implement substitution and transposition techniques using hill cipher
algorithm was executed successfully

Outcome:
Thus the outcome of hill cipher has been attained.

Application:

Communicating the messages in between the users with trust using above algorithm.



16 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(d)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES VIGNERE CIPHER


Aim:
To write a java program to implement vignere cipher

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm :

1. A vignere Square or vignere table consists of the alphabet written out 26 times in different rows,
each alphabet shifted cyclically to the left compared to the previous alphabet, corresponding to the
26 possible Caesar ciphers.
2. At different points in the encryption process, the cipher uses a different alphabet from one of the
rows. The alphabet used at each point depends on a repeating keyword.
3. The person sending the message to be encrypted (eg. attackatdawn) chooses a keyword and
repeats it until it matches the length of the plaintext, for example, the keyword lemon, the cipher
key will be lemonlemonle.
4. Using a VignereSquare and a CipherKey each row starts with a key letter. The remainder of the
row holds the letters A to Z (in shifted order).
5. Although there are 26 key rows shown, you will only use as many keys (different alphabets) as
there are unique letters in the key string, here just 5 keys, {L, E, M, O, N} .
6. For successive letters of the message, we are going to take successive letters of the key string,
and encipher each message letter using its corresponding key row. Choose the next letter of the
key, go along that row to find the column heading that matches the message character; the letter at
the intersection of [key-row, msg-col] is the enciphered letter.
7. ]The first letter of the plaintext, A, is paired with L, the first letter of the key. So use row L and
column A of the Vignere square, namely L. Similarly, for the second letter of the plaintext, the
second letter of the key is used; the letter at row E and column T is X. The rest of the plaintext is
enciphered in a similar fashion



17 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Plaintext: ATTACKATDAWN
Key: LEMONLEMONLE
Ciphertext: LXFOPVEFRNHR


























Result:

Thus the Java program to implement substitution and transposition techniques using vignere cipher
algorithm was executed successfully

Outcome:
Thus the outcome of vignere cipher has been attained.

Application:

Communicating the messages in between the users with privacy.



18 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(e)

IMPLEMENTATION RAIL FENCE TRANSFORMATION TECHNIQUES

Aim:

To write a java program to implement rail fence algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. In the rail fence cipher, the plaintext is written downwards and diagonally on successive "rails" of an
imaginary fence, then moving up when we reach the bottom rail.
2. When we reach the top rail, the message is written downwards again until the whole plaintext is
written out. The message is then read off in rows.
3. Write down the plain text message as a sequence of diagonals.
4. Read the plain text written in Step 1 as a sequence of rows.























19 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:



























Result:

Thus the Java program to implement substitution and transposition techniques using rail fence
algorithm was executed successfully.
Outcome:
Thus the outcome of rail fence has been attained.

Application:

Communicating the messages in between the users with privacy.

20 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00



1. What is public-key cryptography?
2. What is block cipher?
3. What is stream cipher?
4. Name a most widely used stream cipher.
5. What are the differences among encoding, encryption and hashing?
6. What are Brute Force Attacks?
7. What is the length of key in playfair cipher?
8. What is the length of matrix in playfair cipher?
9. What is the length of key in hill cipher?
10. What is the length of key in caesar cipher?
11. What is the length of key in monoalphabetic cipher?
12. What is the length of key in one time pad cipher?
13. What is the length of key in polyalphabetic cipher?
14. What is the length of key in railfence cipher?


















Viva-voce


21 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(a)

IMPLEMENTATION OF DES


Aim:
To write a program to implement DES algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. Firstly, we need to process the key.
2. Get a 64-bit key from the user. (Every 8th bit is considered a parity bit. For a key to have correct parity,
each byte should contain an odd number of "1" bits.).
3. Calculate the key schedule.
4. Perform the following permutation on the 64-bit key.
5. Split the permuted key into two halves. The first 28 bits are called C[0] and the last 28 bits are called
D[0].
6. Calculate the 16 subkeys. Start with i = 1. Perform one or two circular left shifts on both C[i-1] and D[i-1]
to get C[i] and D[i], respectively. The number of shifts per iteration are given below:
Iteration # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Left Shifts 1 1 2 2 2 2 2 2 1 2 2 2 2 2 2 1
7. Permute the concatenation C[i]D[i] as indicated below. This will yield K[i], which is 48 bits long.
Permuted Choice 2 (PC-2).
8. Loop back to 1.2.3.1 until K[16] has been calculated. Process a 64-bit data block.
9. Get a 64-bit data block. If the block is shorter than 64 bits, it should be padded as appropriate for the
application.
10. Perform the following permutation on the data block called Initial Permutation (IP).





22 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Input.txt
JavaCode
encrypted.txt
?w~Z5??&??E
decrypted.txt
JavaCode




























Result:
Thus the Java program to implement cryptographic algorithm using DES algorithm was executed
successfully
Outcome:
Thus the outcome of DES has been attained.

Application:

Developing any private application with high security.



23 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(b)

IMPLEMENTATION OF RSA ALGORITHM

Aim:

To write a program to implement RSA algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Generate two large random primes, P and Q, of approximately equal size.
2. Compute N = P ?Q.
3. Compute Z = (P-1) ?(Q-1).
4. Choose an integer E, 1 < E < Z, such that GCD (E, Z) = 1.
5. Compute the secret exponent D, 1 < D < Z, such that E ?D ? 1 (mod Z).
6. The public key is (N, E) and the private key is (N, D).

An example of RSA encryption :

1. Select primes P=11, Q=3
2. N = P ?Q = 11 ?3 = 33
Z = (P-1) ? (Q-1) = 10 ?2 = 20
3. Lets choose E=3
Check GCD(E, P-1) = GCD(3, 10) = 1 (i.e. 3 and 10 have no common factors except 1),
and check GCD(E, Q-1) = GCD(3, 2) = 1, therefore GCD(E, Z) = GCD(3, 20) = 1
4. Compute D such that E x D ? 1 (mod Z)
Compute D = E
^-1
mod Z = 3
^-1
mod 20
Find a value for D such that Z divides ((E x D)-1)
Find D such that 20 divides 3D-1
Simple testing (D = 1, 2, ...) gives D = 7
Check: (E ?D)-1 = 3.7 - 1 = 20, which is divisible by Z
5. Public key = (N, E) = (33, 3) and Private key = (N, D) = (33, 7)

Now say we want to encrypt the message m = 7,
Cipher code = M
^E
mod N
= 7
^3
mod 33
= 343 mod 33
= 13
Hence the ciphertext c = 13

24 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


To check decryption we compute Message? = C
^D
mod N
= 13
^7
mod 33
= 7


































25 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter a Prime number: 5
Enter another prime number: 11
Encryption keys are: 33, 55
Decryption keys are: 17, 55






























Result:

Thus the Java program to implement cryptographic algorithm using RSA algorithm was executed
successfully

Outcome:
Thus the outcome of RSA algorithm has been attained.

Application:

It?s a public key cryptography used in banking application.



26 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(c)

IMPLEMENTATION OF DIFFIEE-HELLMAN

Aim:
To write a program to implement Diffiee- hellman key exchange algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Diffiee-Hellman key exchange (DH) is a cryptographic protocol that allows two parties that have no
prior knowledge of each other to jointly establish a shared secret key.
2. The algorithm generates a public key and a private key for the client.
3. Create a KeyPairGenerator Object that generates private/public keys for the DH algorithm, using the
getInstance(String algortihm) API method.
4. Initialize the KeyGenerator so as to generate keys with a 1024-bit length, using the initialize(int
keysize) API method.
5. Create a KeyPair Object , with the genKeyPair() API method, that generates the key pair.
6. Create the PrivateKey and PublicKey Objects of the key pair, with the getPrivate() and getPublic() API
methods of the KeyPair.
7. Return for both keys the names of their primary encoded formats, using for both their getformat() ?PI
methods.



















27 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Private key format :PKCS#8 Diffie-Helman Private key parameters are:SunJCE Diffie-Hellman Private
Key:
x: a391eed7 d10d95d3 3952005c 117c56ad a3d686c5 8a60d504 2fde2db6 11686543 0025c0b7
e038f63f cb82151b a7cb24fb f6c2ab69 9c517155 67818cec 782cf977
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf f6cb9b55 f26660b7 6b9950a5 a49f9fe8 c24fbba9 d7feb7c6 1bf83b57 e7c6a8a6
150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267
5159578e bad4594f e6710710 8180b449 167123e8 4c281613 b7cf0932 8cc8a6e1
3c167a8b 547c8d28 e0a3ae1e 2bb3a675 916ea37f 0bfa2135 62f1fb62 7a01243b
cca4f1be a8519089 a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512
Public key format :X.509 Diffie-Helman Public key parameters are:SunJCE Diffie-Hellman Public Key:
y: d3fabd76 139865f1 63507aa2 6a9480a9 ba0e6979 f335ee25 2e26762c f7df3af9 d7ea612e
7540f071 f50051ae 7d061113 d0cc4ae1 03406d44 59a93dcd 6ec827d1 06edb2f0 02d48ee5 f2c9cb94
785f39df cc88ec65 5a224a1c 318b51fe 9c40445b fedb5f14 3fe83f51 82d0357c 1004652e 93c9ad81
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf c5f5ba30 f6cb9b55 6cd7813b a49f9fe8 047b1022 c24fbba9 d7feb7c6 1bf83b57
e7c6a8a6 150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267 5159578e
bad4594f e6710710 8180b449 167123e8 b7cf0932 8cc8a6e1 c167a8b 547c8d28 e0a3ae1e 2bb3a675
916ea37f 0bfa2135 62f1fb62 ca4f1be a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512

Result:

Thus the program to implement cryptographic algorithm using diffiee-hellman algorithm was executed
successfully.

Outcome:
Thus the outcome of diffiee-hellman has been attained.

Application:

Communicating the message in between two parties.



28 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(d)

IMPLEMENTATION OF MD5

Aim:
To write a program to implement MD5 algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Append padded bits - The message is padded so that its length is congruent to 448, modulo 512.
Means extended to just 64 bits shy of being of 512 bits long. ? A single ?1? bit is appended to the
message, and then ?0? bits are appended so that the length in bits equals 448 modulo 512.
2. Append length - A 64 bit representation of b is appended to the result of the previous step. The
resulting message has a length that is an exact multiple of 512 bits.
3. Initialize MD Buffer - A four-word buffer (A,B,C,D) is used to compute the message digest. ? Here
each of A,B,C,D, is a 32 bit register. These registers are initialized to the following values in
hexadecimal:
word A: 01 23 45 67 word B: 89 ab cd ef word C: fe dc ba 98 word D: 76 54 32 10
4. Process message in 16-word blocks ? Four auxiliary functions that take as input three 32-bit words
and produce as output one 32-bit word. F(X,Y,Z) = XY v not(X) Z G(X,Y,Z) = XZ v Y not(Z) H(X,Y,Z) =
X xor Y xor Z I(X,Y,Z) = Y xor (X v not(Z)).
5. Process message in 16-word blocks cont ? if the bits of X, Y, and Z are independent and unbiased,
the each bit of F(X,Y,Z), G(X,Y,Z), H(X,Y,Z), and I(X,Y,Z) will be independent and unbiased.














29 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Message digest object info:
Algorithm = MD5
Provider = SUN version 1.6
ToString = MD5 Message Digest from SUN,
MD5("") = D41D8CD98F00B204E9800998ECF8427E
MD5("abc") = 900150983CD24FB0D6963F7D28E17F72
MD5("abcdefghijklmnopqrstuvwxyz") = C3FCD3D76192E4007DFB496CCA67E13Be) SHA 1



























Result:

Thus the Java program to implement MD5 algorithm was executed successfully.

Outcome:
Thus the outcome of MD5 has been attained.

Application:

Developing any application with security.

FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.


























15 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter a 3 letter string: hai
Encrypted string is :fdx
Inverse Matrix is :
0.083333336 0.41666666 -0.33333334
-0.41666666 -0.083333336 0.6666667
0.5833333 -0.083333336 -0.33333334
Decrypted string is :hai























Result:

Thus the Java program to implement substitution and transposition techniques using hill cipher
algorithm was executed successfully

Outcome:
Thus the outcome of hill cipher has been attained.

Application:

Communicating the messages in between the users with trust using above algorithm.



16 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(d)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES VIGNERE CIPHER


Aim:
To write a java program to implement vignere cipher

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm :

1. A vignere Square or vignere table consists of the alphabet written out 26 times in different rows,
each alphabet shifted cyclically to the left compared to the previous alphabet, corresponding to the
26 possible Caesar ciphers.
2. At different points in the encryption process, the cipher uses a different alphabet from one of the
rows. The alphabet used at each point depends on a repeating keyword.
3. The person sending the message to be encrypted (eg. attackatdawn) chooses a keyword and
repeats it until it matches the length of the plaintext, for example, the keyword lemon, the cipher
key will be lemonlemonle.
4. Using a VignereSquare and a CipherKey each row starts with a key letter. The remainder of the
row holds the letters A to Z (in shifted order).
5. Although there are 26 key rows shown, you will only use as many keys (different alphabets) as
there are unique letters in the key string, here just 5 keys, {L, E, M, O, N} .
6. For successive letters of the message, we are going to take successive letters of the key string,
and encipher each message letter using its corresponding key row. Choose the next letter of the
key, go along that row to find the column heading that matches the message character; the letter at
the intersection of [key-row, msg-col] is the enciphered letter.
7. ]The first letter of the plaintext, A, is paired with L, the first letter of the key. So use row L and
column A of the Vignere square, namely L. Similarly, for the second letter of the plaintext, the
second letter of the key is used; the letter at row E and column T is X. The rest of the plaintext is
enciphered in a similar fashion



17 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Plaintext: ATTACKATDAWN
Key: LEMONLEMONLE
Ciphertext: LXFOPVEFRNHR


























Result:

Thus the Java program to implement substitution and transposition techniques using vignere cipher
algorithm was executed successfully

Outcome:
Thus the outcome of vignere cipher has been attained.

Application:

Communicating the messages in between the users with privacy.



18 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(e)

IMPLEMENTATION RAIL FENCE TRANSFORMATION TECHNIQUES

Aim:

To write a java program to implement rail fence algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. In the rail fence cipher, the plaintext is written downwards and diagonally on successive "rails" of an
imaginary fence, then moving up when we reach the bottom rail.
2. When we reach the top rail, the message is written downwards again until the whole plaintext is
written out. The message is then read off in rows.
3. Write down the plain text message as a sequence of diagonals.
4. Read the plain text written in Step 1 as a sequence of rows.























19 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:



























Result:

Thus the Java program to implement substitution and transposition techniques using rail fence
algorithm was executed successfully.
Outcome:
Thus the outcome of rail fence has been attained.

Application:

Communicating the messages in between the users with privacy.

20 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00



1. What is public-key cryptography?
2. What is block cipher?
3. What is stream cipher?
4. Name a most widely used stream cipher.
5. What are the differences among encoding, encryption and hashing?
6. What are Brute Force Attacks?
7. What is the length of key in playfair cipher?
8. What is the length of matrix in playfair cipher?
9. What is the length of key in hill cipher?
10. What is the length of key in caesar cipher?
11. What is the length of key in monoalphabetic cipher?
12. What is the length of key in one time pad cipher?
13. What is the length of key in polyalphabetic cipher?
14. What is the length of key in railfence cipher?


















Viva-voce


21 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(a)

IMPLEMENTATION OF DES


Aim:
To write a program to implement DES algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. Firstly, we need to process the key.
2. Get a 64-bit key from the user. (Every 8th bit is considered a parity bit. For a key to have correct parity,
each byte should contain an odd number of "1" bits.).
3. Calculate the key schedule.
4. Perform the following permutation on the 64-bit key.
5. Split the permuted key into two halves. The first 28 bits are called C[0] and the last 28 bits are called
D[0].
6. Calculate the 16 subkeys. Start with i = 1. Perform one or two circular left shifts on both C[i-1] and D[i-1]
to get C[i] and D[i], respectively. The number of shifts per iteration are given below:
Iteration # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Left Shifts 1 1 2 2 2 2 2 2 1 2 2 2 2 2 2 1
7. Permute the concatenation C[i]D[i] as indicated below. This will yield K[i], which is 48 bits long.
Permuted Choice 2 (PC-2).
8. Loop back to 1.2.3.1 until K[16] has been calculated. Process a 64-bit data block.
9. Get a 64-bit data block. If the block is shorter than 64 bits, it should be padded as appropriate for the
application.
10. Perform the following permutation on the data block called Initial Permutation (IP).





22 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Input.txt
JavaCode
encrypted.txt
?w~Z5??&??E
decrypted.txt
JavaCode




























Result:
Thus the Java program to implement cryptographic algorithm using DES algorithm was executed
successfully
Outcome:
Thus the outcome of DES has been attained.

Application:

Developing any private application with high security.



23 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(b)

IMPLEMENTATION OF RSA ALGORITHM

Aim:

To write a program to implement RSA algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Generate two large random primes, P and Q, of approximately equal size.
2. Compute N = P ?Q.
3. Compute Z = (P-1) ?(Q-1).
4. Choose an integer E, 1 < E < Z, such that GCD (E, Z) = 1.
5. Compute the secret exponent D, 1 < D < Z, such that E ?D ? 1 (mod Z).
6. The public key is (N, E) and the private key is (N, D).

An example of RSA encryption :

1. Select primes P=11, Q=3
2. N = P ?Q = 11 ?3 = 33
Z = (P-1) ? (Q-1) = 10 ?2 = 20
3. Lets choose E=3
Check GCD(E, P-1) = GCD(3, 10) = 1 (i.e. 3 and 10 have no common factors except 1),
and check GCD(E, Q-1) = GCD(3, 2) = 1, therefore GCD(E, Z) = GCD(3, 20) = 1
4. Compute D such that E x D ? 1 (mod Z)
Compute D = E
^-1
mod Z = 3
^-1
mod 20
Find a value for D such that Z divides ((E x D)-1)
Find D such that 20 divides 3D-1
Simple testing (D = 1, 2, ...) gives D = 7
Check: (E ?D)-1 = 3.7 - 1 = 20, which is divisible by Z
5. Public key = (N, E) = (33, 3) and Private key = (N, D) = (33, 7)

Now say we want to encrypt the message m = 7,
Cipher code = M
^E
mod N
= 7
^3
mod 33
= 343 mod 33
= 13
Hence the ciphertext c = 13

24 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


To check decryption we compute Message? = C
^D
mod N
= 13
^7
mod 33
= 7


































25 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter a Prime number: 5
Enter another prime number: 11
Encryption keys are: 33, 55
Decryption keys are: 17, 55






























Result:

Thus the Java program to implement cryptographic algorithm using RSA algorithm was executed
successfully

Outcome:
Thus the outcome of RSA algorithm has been attained.

Application:

It?s a public key cryptography used in banking application.



26 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(c)

IMPLEMENTATION OF DIFFIEE-HELLMAN

Aim:
To write a program to implement Diffiee- hellman key exchange algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Diffiee-Hellman key exchange (DH) is a cryptographic protocol that allows two parties that have no
prior knowledge of each other to jointly establish a shared secret key.
2. The algorithm generates a public key and a private key for the client.
3. Create a KeyPairGenerator Object that generates private/public keys for the DH algorithm, using the
getInstance(String algortihm) API method.
4. Initialize the KeyGenerator so as to generate keys with a 1024-bit length, using the initialize(int
keysize) API method.
5. Create a KeyPair Object , with the genKeyPair() API method, that generates the key pair.
6. Create the PrivateKey and PublicKey Objects of the key pair, with the getPrivate() and getPublic() API
methods of the KeyPair.
7. Return for both keys the names of their primary encoded formats, using for both their getformat() ?PI
methods.



















27 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Private key format :PKCS#8 Diffie-Helman Private key parameters are:SunJCE Diffie-Hellman Private
Key:
x: a391eed7 d10d95d3 3952005c 117c56ad a3d686c5 8a60d504 2fde2db6 11686543 0025c0b7
e038f63f cb82151b a7cb24fb f6c2ab69 9c517155 67818cec 782cf977
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf f6cb9b55 f26660b7 6b9950a5 a49f9fe8 c24fbba9 d7feb7c6 1bf83b57 e7c6a8a6
150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267
5159578e bad4594f e6710710 8180b449 167123e8 4c281613 b7cf0932 8cc8a6e1
3c167a8b 547c8d28 e0a3ae1e 2bb3a675 916ea37f 0bfa2135 62f1fb62 7a01243b
cca4f1be a8519089 a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512
Public key format :X.509 Diffie-Helman Public key parameters are:SunJCE Diffie-Hellman Public Key:
y: d3fabd76 139865f1 63507aa2 6a9480a9 ba0e6979 f335ee25 2e26762c f7df3af9 d7ea612e
7540f071 f50051ae 7d061113 d0cc4ae1 03406d44 59a93dcd 6ec827d1 06edb2f0 02d48ee5 f2c9cb94
785f39df cc88ec65 5a224a1c 318b51fe 9c40445b fedb5f14 3fe83f51 82d0357c 1004652e 93c9ad81
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf c5f5ba30 f6cb9b55 6cd7813b a49f9fe8 047b1022 c24fbba9 d7feb7c6 1bf83b57
e7c6a8a6 150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267 5159578e
bad4594f e6710710 8180b449 167123e8 b7cf0932 8cc8a6e1 c167a8b 547c8d28 e0a3ae1e 2bb3a675
916ea37f 0bfa2135 62f1fb62 ca4f1be a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512

Result:

Thus the program to implement cryptographic algorithm using diffiee-hellman algorithm was executed
successfully.

Outcome:
Thus the outcome of diffiee-hellman has been attained.

Application:

Communicating the message in between two parties.



28 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(d)

IMPLEMENTATION OF MD5

Aim:
To write a program to implement MD5 algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Append padded bits - The message is padded so that its length is congruent to 448, modulo 512.
Means extended to just 64 bits shy of being of 512 bits long. ? A single ?1? bit is appended to the
message, and then ?0? bits are appended so that the length in bits equals 448 modulo 512.
2. Append length - A 64 bit representation of b is appended to the result of the previous step. The
resulting message has a length that is an exact multiple of 512 bits.
3. Initialize MD Buffer - A four-word buffer (A,B,C,D) is used to compute the message digest. ? Here
each of A,B,C,D, is a 32 bit register. These registers are initialized to the following values in
hexadecimal:
word A: 01 23 45 67 word B: 89 ab cd ef word C: fe dc ba 98 word D: 76 54 32 10
4. Process message in 16-word blocks ? Four auxiliary functions that take as input three 32-bit words
and produce as output one 32-bit word. F(X,Y,Z) = XY v not(X) Z G(X,Y,Z) = XZ v Y not(Z) H(X,Y,Z) =
X xor Y xor Z I(X,Y,Z) = Y xor (X v not(Z)).
5. Process message in 16-word blocks cont ? if the bits of X, Y, and Z are independent and unbiased,
the each bit of F(X,Y,Z), G(X,Y,Z), H(X,Y,Z), and I(X,Y,Z) will be independent and unbiased.














29 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Message digest object info:
Algorithm = MD5
Provider = SUN version 1.6
ToString = MD5 Message Digest from SUN,
MD5("") = D41D8CD98F00B204E9800998ECF8427E
MD5("abc") = 900150983CD24FB0D6963F7D28E17F72
MD5("abcdefghijklmnopqrstuvwxyz") = C3FCD3D76192E4007DFB496CCA67E13Be) SHA 1



























Result:

Thus the Java program to implement MD5 algorithm was executed successfully.

Outcome:
Thus the outcome of MD5 has been attained.

Application:

Developing any application with security.


30 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(e)

IMPLEMENTATION OF SHA-1


Aim:
To write a program to implement Secure Hash Algorithm-1

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Append Padding Bits Message is ?padded? with a 1 and as many 0?s as necessary to bring the
message length to 64 bits fewer than an even multiple of 512.
2. Append Length 64 bits are appended to the end of the padded message. These bits hold the
binary format of 64 bits indicating the length of the original message.
3. Prepare Processing Function:
SHA1 requires 80 processing functions defined as
f(t;B,C,D) = (B AND C) OR ((NOT B) AND D) ( 0 <= t <= 19)
f(t;B,C,D) = B XOR C XOR D (20 <= t <= 39)
f(t;B,C,D) = (B AND C) OR (B AND D) OR (C AND D) (40 <= t <=59)
f(t;B,C,D) = B XOR C XOR D (60 <= t <= 79)
4. Prepare Processing Constants:
SHA1 requires 80 processing constant words defined as
K(t) = 0x5A827999 ( 0 <= t <= 19)
K(t) = 0x6ED9EBA1 (20 <= t <= 39)
K(t) = 0x8F1BBCDC (40 <= t <= 59)
K(t) = 0xCA62C1D6 (60 <= t <= 79)











FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.


























15 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter a 3 letter string: hai
Encrypted string is :fdx
Inverse Matrix is :
0.083333336 0.41666666 -0.33333334
-0.41666666 -0.083333336 0.6666667
0.5833333 -0.083333336 -0.33333334
Decrypted string is :hai























Result:

Thus the Java program to implement substitution and transposition techniques using hill cipher
algorithm was executed successfully

Outcome:
Thus the outcome of hill cipher has been attained.

Application:

Communicating the messages in between the users with trust using above algorithm.



16 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(d)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES VIGNERE CIPHER


Aim:
To write a java program to implement vignere cipher

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm :

1. A vignere Square or vignere table consists of the alphabet written out 26 times in different rows,
each alphabet shifted cyclically to the left compared to the previous alphabet, corresponding to the
26 possible Caesar ciphers.
2. At different points in the encryption process, the cipher uses a different alphabet from one of the
rows. The alphabet used at each point depends on a repeating keyword.
3. The person sending the message to be encrypted (eg. attackatdawn) chooses a keyword and
repeats it until it matches the length of the plaintext, for example, the keyword lemon, the cipher
key will be lemonlemonle.
4. Using a VignereSquare and a CipherKey each row starts with a key letter. The remainder of the
row holds the letters A to Z (in shifted order).
5. Although there are 26 key rows shown, you will only use as many keys (different alphabets) as
there are unique letters in the key string, here just 5 keys, {L, E, M, O, N} .
6. For successive letters of the message, we are going to take successive letters of the key string,
and encipher each message letter using its corresponding key row. Choose the next letter of the
key, go along that row to find the column heading that matches the message character; the letter at
the intersection of [key-row, msg-col] is the enciphered letter.
7. ]The first letter of the plaintext, A, is paired with L, the first letter of the key. So use row L and
column A of the Vignere square, namely L. Similarly, for the second letter of the plaintext, the
second letter of the key is used; the letter at row E and column T is X. The rest of the plaintext is
enciphered in a similar fashion



17 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Plaintext: ATTACKATDAWN
Key: LEMONLEMONLE
Ciphertext: LXFOPVEFRNHR


























Result:

Thus the Java program to implement substitution and transposition techniques using vignere cipher
algorithm was executed successfully

Outcome:
Thus the outcome of vignere cipher has been attained.

Application:

Communicating the messages in between the users with privacy.



18 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(e)

IMPLEMENTATION RAIL FENCE TRANSFORMATION TECHNIQUES

Aim:

To write a java program to implement rail fence algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. In the rail fence cipher, the plaintext is written downwards and diagonally on successive "rails" of an
imaginary fence, then moving up when we reach the bottom rail.
2. When we reach the top rail, the message is written downwards again until the whole plaintext is
written out. The message is then read off in rows.
3. Write down the plain text message as a sequence of diagonals.
4. Read the plain text written in Step 1 as a sequence of rows.























19 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:



























Result:

Thus the Java program to implement substitution and transposition techniques using rail fence
algorithm was executed successfully.
Outcome:
Thus the outcome of rail fence has been attained.

Application:

Communicating the messages in between the users with privacy.

20 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00



1. What is public-key cryptography?
2. What is block cipher?
3. What is stream cipher?
4. Name a most widely used stream cipher.
5. What are the differences among encoding, encryption and hashing?
6. What are Brute Force Attacks?
7. What is the length of key in playfair cipher?
8. What is the length of matrix in playfair cipher?
9. What is the length of key in hill cipher?
10. What is the length of key in caesar cipher?
11. What is the length of key in monoalphabetic cipher?
12. What is the length of key in one time pad cipher?
13. What is the length of key in polyalphabetic cipher?
14. What is the length of key in railfence cipher?


















Viva-voce


21 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(a)

IMPLEMENTATION OF DES


Aim:
To write a program to implement DES algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. Firstly, we need to process the key.
2. Get a 64-bit key from the user. (Every 8th bit is considered a parity bit. For a key to have correct parity,
each byte should contain an odd number of "1" bits.).
3. Calculate the key schedule.
4. Perform the following permutation on the 64-bit key.
5. Split the permuted key into two halves. The first 28 bits are called C[0] and the last 28 bits are called
D[0].
6. Calculate the 16 subkeys. Start with i = 1. Perform one or two circular left shifts on both C[i-1] and D[i-1]
to get C[i] and D[i], respectively. The number of shifts per iteration are given below:
Iteration # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Left Shifts 1 1 2 2 2 2 2 2 1 2 2 2 2 2 2 1
7. Permute the concatenation C[i]D[i] as indicated below. This will yield K[i], which is 48 bits long.
Permuted Choice 2 (PC-2).
8. Loop back to 1.2.3.1 until K[16] has been calculated. Process a 64-bit data block.
9. Get a 64-bit data block. If the block is shorter than 64 bits, it should be padded as appropriate for the
application.
10. Perform the following permutation on the data block called Initial Permutation (IP).





22 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Input.txt
JavaCode
encrypted.txt
?w~Z5??&??E
decrypted.txt
JavaCode




























Result:
Thus the Java program to implement cryptographic algorithm using DES algorithm was executed
successfully
Outcome:
Thus the outcome of DES has been attained.

Application:

Developing any private application with high security.



23 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(b)

IMPLEMENTATION OF RSA ALGORITHM

Aim:

To write a program to implement RSA algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Generate two large random primes, P and Q, of approximately equal size.
2. Compute N = P ?Q.
3. Compute Z = (P-1) ?(Q-1).
4. Choose an integer E, 1 < E < Z, such that GCD (E, Z) = 1.
5. Compute the secret exponent D, 1 < D < Z, such that E ?D ? 1 (mod Z).
6. The public key is (N, E) and the private key is (N, D).

An example of RSA encryption :

1. Select primes P=11, Q=3
2. N = P ?Q = 11 ?3 = 33
Z = (P-1) ? (Q-1) = 10 ?2 = 20
3. Lets choose E=3
Check GCD(E, P-1) = GCD(3, 10) = 1 (i.e. 3 and 10 have no common factors except 1),
and check GCD(E, Q-1) = GCD(3, 2) = 1, therefore GCD(E, Z) = GCD(3, 20) = 1
4. Compute D such that E x D ? 1 (mod Z)
Compute D = E
^-1
mod Z = 3
^-1
mod 20
Find a value for D such that Z divides ((E x D)-1)
Find D such that 20 divides 3D-1
Simple testing (D = 1, 2, ...) gives D = 7
Check: (E ?D)-1 = 3.7 - 1 = 20, which is divisible by Z
5. Public key = (N, E) = (33, 3) and Private key = (N, D) = (33, 7)

Now say we want to encrypt the message m = 7,
Cipher code = M
^E
mod N
= 7
^3
mod 33
= 343 mod 33
= 13
Hence the ciphertext c = 13

24 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


To check decryption we compute Message? = C
^D
mod N
= 13
^7
mod 33
= 7


































25 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter a Prime number: 5
Enter another prime number: 11
Encryption keys are: 33, 55
Decryption keys are: 17, 55






























Result:

Thus the Java program to implement cryptographic algorithm using RSA algorithm was executed
successfully

Outcome:
Thus the outcome of RSA algorithm has been attained.

Application:

It?s a public key cryptography used in banking application.



26 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(c)

IMPLEMENTATION OF DIFFIEE-HELLMAN

Aim:
To write a program to implement Diffiee- hellman key exchange algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Diffiee-Hellman key exchange (DH) is a cryptographic protocol that allows two parties that have no
prior knowledge of each other to jointly establish a shared secret key.
2. The algorithm generates a public key and a private key for the client.
3. Create a KeyPairGenerator Object that generates private/public keys for the DH algorithm, using the
getInstance(String algortihm) API method.
4. Initialize the KeyGenerator so as to generate keys with a 1024-bit length, using the initialize(int
keysize) API method.
5. Create a KeyPair Object , with the genKeyPair() API method, that generates the key pair.
6. Create the PrivateKey and PublicKey Objects of the key pair, with the getPrivate() and getPublic() API
methods of the KeyPair.
7. Return for both keys the names of their primary encoded formats, using for both their getformat() ?PI
methods.



















27 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Private key format :PKCS#8 Diffie-Helman Private key parameters are:SunJCE Diffie-Hellman Private
Key:
x: a391eed7 d10d95d3 3952005c 117c56ad a3d686c5 8a60d504 2fde2db6 11686543 0025c0b7
e038f63f cb82151b a7cb24fb f6c2ab69 9c517155 67818cec 782cf977
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf f6cb9b55 f26660b7 6b9950a5 a49f9fe8 c24fbba9 d7feb7c6 1bf83b57 e7c6a8a6
150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267
5159578e bad4594f e6710710 8180b449 167123e8 4c281613 b7cf0932 8cc8a6e1
3c167a8b 547c8d28 e0a3ae1e 2bb3a675 916ea37f 0bfa2135 62f1fb62 7a01243b
cca4f1be a8519089 a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512
Public key format :X.509 Diffie-Helman Public key parameters are:SunJCE Diffie-Hellman Public Key:
y: d3fabd76 139865f1 63507aa2 6a9480a9 ba0e6979 f335ee25 2e26762c f7df3af9 d7ea612e
7540f071 f50051ae 7d061113 d0cc4ae1 03406d44 59a93dcd 6ec827d1 06edb2f0 02d48ee5 f2c9cb94
785f39df cc88ec65 5a224a1c 318b51fe 9c40445b fedb5f14 3fe83f51 82d0357c 1004652e 93c9ad81
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf c5f5ba30 f6cb9b55 6cd7813b a49f9fe8 047b1022 c24fbba9 d7feb7c6 1bf83b57
e7c6a8a6 150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267 5159578e
bad4594f e6710710 8180b449 167123e8 b7cf0932 8cc8a6e1 c167a8b 547c8d28 e0a3ae1e 2bb3a675
916ea37f 0bfa2135 62f1fb62 ca4f1be a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512

Result:

Thus the program to implement cryptographic algorithm using diffiee-hellman algorithm was executed
successfully.

Outcome:
Thus the outcome of diffiee-hellman has been attained.

Application:

Communicating the message in between two parties.



28 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(d)

IMPLEMENTATION OF MD5

Aim:
To write a program to implement MD5 algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Append padded bits - The message is padded so that its length is congruent to 448, modulo 512.
Means extended to just 64 bits shy of being of 512 bits long. ? A single ?1? bit is appended to the
message, and then ?0? bits are appended so that the length in bits equals 448 modulo 512.
2. Append length - A 64 bit representation of b is appended to the result of the previous step. The
resulting message has a length that is an exact multiple of 512 bits.
3. Initialize MD Buffer - A four-word buffer (A,B,C,D) is used to compute the message digest. ? Here
each of A,B,C,D, is a 32 bit register. These registers are initialized to the following values in
hexadecimal:
word A: 01 23 45 67 word B: 89 ab cd ef word C: fe dc ba 98 word D: 76 54 32 10
4. Process message in 16-word blocks ? Four auxiliary functions that take as input three 32-bit words
and produce as output one 32-bit word. F(X,Y,Z) = XY v not(X) Z G(X,Y,Z) = XZ v Y not(Z) H(X,Y,Z) =
X xor Y xor Z I(X,Y,Z) = Y xor (X v not(Z)).
5. Process message in 16-word blocks cont ? if the bits of X, Y, and Z are independent and unbiased,
the each bit of F(X,Y,Z), G(X,Y,Z), H(X,Y,Z), and I(X,Y,Z) will be independent and unbiased.














29 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Message digest object info:
Algorithm = MD5
Provider = SUN version 1.6
ToString = MD5 Message Digest from SUN,
MD5("") = D41D8CD98F00B204E9800998ECF8427E
MD5("abc") = 900150983CD24FB0D6963F7D28E17F72
MD5("abcdefghijklmnopqrstuvwxyz") = C3FCD3D76192E4007DFB496CCA67E13Be) SHA 1



























Result:

Thus the Java program to implement MD5 algorithm was executed successfully.

Outcome:
Thus the outcome of MD5 has been attained.

Application:

Developing any application with security.


30 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(e)

IMPLEMENTATION OF SHA-1


Aim:
To write a program to implement Secure Hash Algorithm-1

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Append Padding Bits Message is ?padded? with a 1 and as many 0?s as necessary to bring the
message length to 64 bits fewer than an even multiple of 512.
2. Append Length 64 bits are appended to the end of the padded message. These bits hold the
binary format of 64 bits indicating the length of the original message.
3. Prepare Processing Function:
SHA1 requires 80 processing functions defined as
f(t;B,C,D) = (B AND C) OR ((NOT B) AND D) ( 0 <= t <= 19)
f(t;B,C,D) = B XOR C XOR D (20 <= t <= 39)
f(t;B,C,D) = (B AND C) OR (B AND D) OR (C AND D) (40 <= t <=59)
f(t;B,C,D) = B XOR C XOR D (60 <= t <= 79)
4. Prepare Processing Constants:
SHA1 requires 80 processing constant words defined as
K(t) = 0x5A827999 ( 0 <= t <= 19)
K(t) = 0x6ED9EBA1 (20 <= t <= 39)
K(t) = 0x8F1BBCDC (40 <= t <= 59)
K(t) = 0xCA62C1D6 (60 <= t <= 79)












31 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Message digest object info:
Algorithm = SHA1
Provider = SUN version 1.6
ToString = SHA1 Message Digest from SUN,
SHA1("") = DA39A3EE5E6B4B0D3255BFEF95601890AFD80709
SHA1("abc") = A9993E364706816ABA3E25717850C26C9CD0D89D
SHA1("abcdefghijklmnopqrstuvwxyz")=32D10C7B8CF96570CA04CE37F2A19D8424
0D3A89


























Result:

Thus the Java program to implement using SHA-1 was executed successfully.
Outcome:
Thus the outcome of SHA-1 has been attained.

Application:

Presently used in banking application.


FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.


























15 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter a 3 letter string: hai
Encrypted string is :fdx
Inverse Matrix is :
0.083333336 0.41666666 -0.33333334
-0.41666666 -0.083333336 0.6666667
0.5833333 -0.083333336 -0.33333334
Decrypted string is :hai























Result:

Thus the Java program to implement substitution and transposition techniques using hill cipher
algorithm was executed successfully

Outcome:
Thus the outcome of hill cipher has been attained.

Application:

Communicating the messages in between the users with trust using above algorithm.



16 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(d)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES VIGNERE CIPHER


Aim:
To write a java program to implement vignere cipher

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm :

1. A vignere Square or vignere table consists of the alphabet written out 26 times in different rows,
each alphabet shifted cyclically to the left compared to the previous alphabet, corresponding to the
26 possible Caesar ciphers.
2. At different points in the encryption process, the cipher uses a different alphabet from one of the
rows. The alphabet used at each point depends on a repeating keyword.
3. The person sending the message to be encrypted (eg. attackatdawn) chooses a keyword and
repeats it until it matches the length of the plaintext, for example, the keyword lemon, the cipher
key will be lemonlemonle.
4. Using a VignereSquare and a CipherKey each row starts with a key letter. The remainder of the
row holds the letters A to Z (in shifted order).
5. Although there are 26 key rows shown, you will only use as many keys (different alphabets) as
there are unique letters in the key string, here just 5 keys, {L, E, M, O, N} .
6. For successive letters of the message, we are going to take successive letters of the key string,
and encipher each message letter using its corresponding key row. Choose the next letter of the
key, go along that row to find the column heading that matches the message character; the letter at
the intersection of [key-row, msg-col] is the enciphered letter.
7. ]The first letter of the plaintext, A, is paired with L, the first letter of the key. So use row L and
column A of the Vignere square, namely L. Similarly, for the second letter of the plaintext, the
second letter of the key is used; the letter at row E and column T is X. The rest of the plaintext is
enciphered in a similar fashion



17 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Plaintext: ATTACKATDAWN
Key: LEMONLEMONLE
Ciphertext: LXFOPVEFRNHR


























Result:

Thus the Java program to implement substitution and transposition techniques using vignere cipher
algorithm was executed successfully

Outcome:
Thus the outcome of vignere cipher has been attained.

Application:

Communicating the messages in between the users with privacy.



18 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(e)

IMPLEMENTATION RAIL FENCE TRANSFORMATION TECHNIQUES

Aim:

To write a java program to implement rail fence algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. In the rail fence cipher, the plaintext is written downwards and diagonally on successive "rails" of an
imaginary fence, then moving up when we reach the bottom rail.
2. When we reach the top rail, the message is written downwards again until the whole plaintext is
written out. The message is then read off in rows.
3. Write down the plain text message as a sequence of diagonals.
4. Read the plain text written in Step 1 as a sequence of rows.























19 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:



























Result:

Thus the Java program to implement substitution and transposition techniques using rail fence
algorithm was executed successfully.
Outcome:
Thus the outcome of rail fence has been attained.

Application:

Communicating the messages in between the users with privacy.

20 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00



1. What is public-key cryptography?
2. What is block cipher?
3. What is stream cipher?
4. Name a most widely used stream cipher.
5. What are the differences among encoding, encryption and hashing?
6. What are Brute Force Attacks?
7. What is the length of key in playfair cipher?
8. What is the length of matrix in playfair cipher?
9. What is the length of key in hill cipher?
10. What is the length of key in caesar cipher?
11. What is the length of key in monoalphabetic cipher?
12. What is the length of key in one time pad cipher?
13. What is the length of key in polyalphabetic cipher?
14. What is the length of key in railfence cipher?


















Viva-voce


21 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(a)

IMPLEMENTATION OF DES


Aim:
To write a program to implement DES algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. Firstly, we need to process the key.
2. Get a 64-bit key from the user. (Every 8th bit is considered a parity bit. For a key to have correct parity,
each byte should contain an odd number of "1" bits.).
3. Calculate the key schedule.
4. Perform the following permutation on the 64-bit key.
5. Split the permuted key into two halves. The first 28 bits are called C[0] and the last 28 bits are called
D[0].
6. Calculate the 16 subkeys. Start with i = 1. Perform one or two circular left shifts on both C[i-1] and D[i-1]
to get C[i] and D[i], respectively. The number of shifts per iteration are given below:
Iteration # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Left Shifts 1 1 2 2 2 2 2 2 1 2 2 2 2 2 2 1
7. Permute the concatenation C[i]D[i] as indicated below. This will yield K[i], which is 48 bits long.
Permuted Choice 2 (PC-2).
8. Loop back to 1.2.3.1 until K[16] has been calculated. Process a 64-bit data block.
9. Get a 64-bit data block. If the block is shorter than 64 bits, it should be padded as appropriate for the
application.
10. Perform the following permutation on the data block called Initial Permutation (IP).





22 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Input.txt
JavaCode
encrypted.txt
?w~Z5??&??E
decrypted.txt
JavaCode




























Result:
Thus the Java program to implement cryptographic algorithm using DES algorithm was executed
successfully
Outcome:
Thus the outcome of DES has been attained.

Application:

Developing any private application with high security.



23 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(b)

IMPLEMENTATION OF RSA ALGORITHM

Aim:

To write a program to implement RSA algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Generate two large random primes, P and Q, of approximately equal size.
2. Compute N = P ?Q.
3. Compute Z = (P-1) ?(Q-1).
4. Choose an integer E, 1 < E < Z, such that GCD (E, Z) = 1.
5. Compute the secret exponent D, 1 < D < Z, such that E ?D ? 1 (mod Z).
6. The public key is (N, E) and the private key is (N, D).

An example of RSA encryption :

1. Select primes P=11, Q=3
2. N = P ?Q = 11 ?3 = 33
Z = (P-1) ? (Q-1) = 10 ?2 = 20
3. Lets choose E=3
Check GCD(E, P-1) = GCD(3, 10) = 1 (i.e. 3 and 10 have no common factors except 1),
and check GCD(E, Q-1) = GCD(3, 2) = 1, therefore GCD(E, Z) = GCD(3, 20) = 1
4. Compute D such that E x D ? 1 (mod Z)
Compute D = E
^-1
mod Z = 3
^-1
mod 20
Find a value for D such that Z divides ((E x D)-1)
Find D such that 20 divides 3D-1
Simple testing (D = 1, 2, ...) gives D = 7
Check: (E ?D)-1 = 3.7 - 1 = 20, which is divisible by Z
5. Public key = (N, E) = (33, 3) and Private key = (N, D) = (33, 7)

Now say we want to encrypt the message m = 7,
Cipher code = M
^E
mod N
= 7
^3
mod 33
= 343 mod 33
= 13
Hence the ciphertext c = 13

24 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


To check decryption we compute Message? = C
^D
mod N
= 13
^7
mod 33
= 7


































25 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter a Prime number: 5
Enter another prime number: 11
Encryption keys are: 33, 55
Decryption keys are: 17, 55






























Result:

Thus the Java program to implement cryptographic algorithm using RSA algorithm was executed
successfully

Outcome:
Thus the outcome of RSA algorithm has been attained.

Application:

It?s a public key cryptography used in banking application.



26 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(c)

IMPLEMENTATION OF DIFFIEE-HELLMAN

Aim:
To write a program to implement Diffiee- hellman key exchange algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Diffiee-Hellman key exchange (DH) is a cryptographic protocol that allows two parties that have no
prior knowledge of each other to jointly establish a shared secret key.
2. The algorithm generates a public key and a private key for the client.
3. Create a KeyPairGenerator Object that generates private/public keys for the DH algorithm, using the
getInstance(String algortihm) API method.
4. Initialize the KeyGenerator so as to generate keys with a 1024-bit length, using the initialize(int
keysize) API method.
5. Create a KeyPair Object , with the genKeyPair() API method, that generates the key pair.
6. Create the PrivateKey and PublicKey Objects of the key pair, with the getPrivate() and getPublic() API
methods of the KeyPair.
7. Return for both keys the names of their primary encoded formats, using for both their getformat() ?PI
methods.



















27 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Private key format :PKCS#8 Diffie-Helman Private key parameters are:SunJCE Diffie-Hellman Private
Key:
x: a391eed7 d10d95d3 3952005c 117c56ad a3d686c5 8a60d504 2fde2db6 11686543 0025c0b7
e038f63f cb82151b a7cb24fb f6c2ab69 9c517155 67818cec 782cf977
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf f6cb9b55 f26660b7 6b9950a5 a49f9fe8 c24fbba9 d7feb7c6 1bf83b57 e7c6a8a6
150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267
5159578e bad4594f e6710710 8180b449 167123e8 4c281613 b7cf0932 8cc8a6e1
3c167a8b 547c8d28 e0a3ae1e 2bb3a675 916ea37f 0bfa2135 62f1fb62 7a01243b
cca4f1be a8519089 a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512
Public key format :X.509 Diffie-Helman Public key parameters are:SunJCE Diffie-Hellman Public Key:
y: d3fabd76 139865f1 63507aa2 6a9480a9 ba0e6979 f335ee25 2e26762c f7df3af9 d7ea612e
7540f071 f50051ae 7d061113 d0cc4ae1 03406d44 59a93dcd 6ec827d1 06edb2f0 02d48ee5 f2c9cb94
785f39df cc88ec65 5a224a1c 318b51fe 9c40445b fedb5f14 3fe83f51 82d0357c 1004652e 93c9ad81
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf c5f5ba30 f6cb9b55 6cd7813b a49f9fe8 047b1022 c24fbba9 d7feb7c6 1bf83b57
e7c6a8a6 150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267 5159578e
bad4594f e6710710 8180b449 167123e8 b7cf0932 8cc8a6e1 c167a8b 547c8d28 e0a3ae1e 2bb3a675
916ea37f 0bfa2135 62f1fb62 ca4f1be a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512

Result:

Thus the program to implement cryptographic algorithm using diffiee-hellman algorithm was executed
successfully.

Outcome:
Thus the outcome of diffiee-hellman has been attained.

Application:

Communicating the message in between two parties.



28 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(d)

IMPLEMENTATION OF MD5

Aim:
To write a program to implement MD5 algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Append padded bits - The message is padded so that its length is congruent to 448, modulo 512.
Means extended to just 64 bits shy of being of 512 bits long. ? A single ?1? bit is appended to the
message, and then ?0? bits are appended so that the length in bits equals 448 modulo 512.
2. Append length - A 64 bit representation of b is appended to the result of the previous step. The
resulting message has a length that is an exact multiple of 512 bits.
3. Initialize MD Buffer - A four-word buffer (A,B,C,D) is used to compute the message digest. ? Here
each of A,B,C,D, is a 32 bit register. These registers are initialized to the following values in
hexadecimal:
word A: 01 23 45 67 word B: 89 ab cd ef word C: fe dc ba 98 word D: 76 54 32 10
4. Process message in 16-word blocks ? Four auxiliary functions that take as input three 32-bit words
and produce as output one 32-bit word. F(X,Y,Z) = XY v not(X) Z G(X,Y,Z) = XZ v Y not(Z) H(X,Y,Z) =
X xor Y xor Z I(X,Y,Z) = Y xor (X v not(Z)).
5. Process message in 16-word blocks cont ? if the bits of X, Y, and Z are independent and unbiased,
the each bit of F(X,Y,Z), G(X,Y,Z), H(X,Y,Z), and I(X,Y,Z) will be independent and unbiased.














29 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Message digest object info:
Algorithm = MD5
Provider = SUN version 1.6
ToString = MD5 Message Digest from SUN,
MD5("") = D41D8CD98F00B204E9800998ECF8427E
MD5("abc") = 900150983CD24FB0D6963F7D28E17F72
MD5("abcdefghijklmnopqrstuvwxyz") = C3FCD3D76192E4007DFB496CCA67E13Be) SHA 1



























Result:

Thus the Java program to implement MD5 algorithm was executed successfully.

Outcome:
Thus the outcome of MD5 has been attained.

Application:

Developing any application with security.


30 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(e)

IMPLEMENTATION OF SHA-1


Aim:
To write a program to implement Secure Hash Algorithm-1

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Append Padding Bits Message is ?padded? with a 1 and as many 0?s as necessary to bring the
message length to 64 bits fewer than an even multiple of 512.
2. Append Length 64 bits are appended to the end of the padded message. These bits hold the
binary format of 64 bits indicating the length of the original message.
3. Prepare Processing Function:
SHA1 requires 80 processing functions defined as
f(t;B,C,D) = (B AND C) OR ((NOT B) AND D) ( 0 <= t <= 19)
f(t;B,C,D) = B XOR C XOR D (20 <= t <= 39)
f(t;B,C,D) = (B AND C) OR (B AND D) OR (C AND D) (40 <= t <=59)
f(t;B,C,D) = B XOR C XOR D (60 <= t <= 79)
4. Prepare Processing Constants:
SHA1 requires 80 processing constant words defined as
K(t) = 0x5A827999 ( 0 <= t <= 19)
K(t) = 0x6ED9EBA1 (20 <= t <= 39)
K(t) = 0x8F1BBCDC (40 <= t <= 59)
K(t) = 0xCA62C1D6 (60 <= t <= 79)












31 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Message digest object info:
Algorithm = SHA1
Provider = SUN version 1.6
ToString = SHA1 Message Digest from SUN,
SHA1("") = DA39A3EE5E6B4B0D3255BFEF95601890AFD80709
SHA1("abc") = A9993E364706816ABA3E25717850C26C9CD0D89D
SHA1("abcdefghijklmnopqrstuvwxyz")=32D10C7B8CF96570CA04CE37F2A19D8424
0D3A89


























Result:

Thus the Java program to implement using SHA-1 was executed successfully.
Outcome:
Thus the outcome of SHA-1 has been attained.

Application:

Presently used in banking application.



32 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




1. What is DES?
2. What is the input key length in DES?
3. What is length plain text length in DES?
4. What is Diffie-Hellman?
5. What is RSA algorithm?
6. What is SHA-1?
7. What is the output length ofplain text in DES?
8. Abbreviate RSA.
9. Abbreviate SHA-1.

































Viva-voce

FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.


























15 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter a 3 letter string: hai
Encrypted string is :fdx
Inverse Matrix is :
0.083333336 0.41666666 -0.33333334
-0.41666666 -0.083333336 0.6666667
0.5833333 -0.083333336 -0.33333334
Decrypted string is :hai























Result:

Thus the Java program to implement substitution and transposition techniques using hill cipher
algorithm was executed successfully

Outcome:
Thus the outcome of hill cipher has been attained.

Application:

Communicating the messages in between the users with trust using above algorithm.



16 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(d)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES VIGNERE CIPHER


Aim:
To write a java program to implement vignere cipher

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm :

1. A vignere Square or vignere table consists of the alphabet written out 26 times in different rows,
each alphabet shifted cyclically to the left compared to the previous alphabet, corresponding to the
26 possible Caesar ciphers.
2. At different points in the encryption process, the cipher uses a different alphabet from one of the
rows. The alphabet used at each point depends on a repeating keyword.
3. The person sending the message to be encrypted (eg. attackatdawn) chooses a keyword and
repeats it until it matches the length of the plaintext, for example, the keyword lemon, the cipher
key will be lemonlemonle.
4. Using a VignereSquare and a CipherKey each row starts with a key letter. The remainder of the
row holds the letters A to Z (in shifted order).
5. Although there are 26 key rows shown, you will only use as many keys (different alphabets) as
there are unique letters in the key string, here just 5 keys, {L, E, M, O, N} .
6. For successive letters of the message, we are going to take successive letters of the key string,
and encipher each message letter using its corresponding key row. Choose the next letter of the
key, go along that row to find the column heading that matches the message character; the letter at
the intersection of [key-row, msg-col] is the enciphered letter.
7. ]The first letter of the plaintext, A, is paired with L, the first letter of the key. So use row L and
column A of the Vignere square, namely L. Similarly, for the second letter of the plaintext, the
second letter of the key is used; the letter at row E and column T is X. The rest of the plaintext is
enciphered in a similar fashion



17 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Plaintext: ATTACKATDAWN
Key: LEMONLEMONLE
Ciphertext: LXFOPVEFRNHR


























Result:

Thus the Java program to implement substitution and transposition techniques using vignere cipher
algorithm was executed successfully

Outcome:
Thus the outcome of vignere cipher has been attained.

Application:

Communicating the messages in between the users with privacy.



18 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(e)

IMPLEMENTATION RAIL FENCE TRANSFORMATION TECHNIQUES

Aim:

To write a java program to implement rail fence algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. In the rail fence cipher, the plaintext is written downwards and diagonally on successive "rails" of an
imaginary fence, then moving up when we reach the bottom rail.
2. When we reach the top rail, the message is written downwards again until the whole plaintext is
written out. The message is then read off in rows.
3. Write down the plain text message as a sequence of diagonals.
4. Read the plain text written in Step 1 as a sequence of rows.























19 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:



























Result:

Thus the Java program to implement substitution and transposition techniques using rail fence
algorithm was executed successfully.
Outcome:
Thus the outcome of rail fence has been attained.

Application:

Communicating the messages in between the users with privacy.

20 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00



1. What is public-key cryptography?
2. What is block cipher?
3. What is stream cipher?
4. Name a most widely used stream cipher.
5. What are the differences among encoding, encryption and hashing?
6. What are Brute Force Attacks?
7. What is the length of key in playfair cipher?
8. What is the length of matrix in playfair cipher?
9. What is the length of key in hill cipher?
10. What is the length of key in caesar cipher?
11. What is the length of key in monoalphabetic cipher?
12. What is the length of key in one time pad cipher?
13. What is the length of key in polyalphabetic cipher?
14. What is the length of key in railfence cipher?


















Viva-voce


21 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(a)

IMPLEMENTATION OF DES


Aim:
To write a program to implement DES algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. Firstly, we need to process the key.
2. Get a 64-bit key from the user. (Every 8th bit is considered a parity bit. For a key to have correct parity,
each byte should contain an odd number of "1" bits.).
3. Calculate the key schedule.
4. Perform the following permutation on the 64-bit key.
5. Split the permuted key into two halves. The first 28 bits are called C[0] and the last 28 bits are called
D[0].
6. Calculate the 16 subkeys. Start with i = 1. Perform one or two circular left shifts on both C[i-1] and D[i-1]
to get C[i] and D[i], respectively. The number of shifts per iteration are given below:
Iteration # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Left Shifts 1 1 2 2 2 2 2 2 1 2 2 2 2 2 2 1
7. Permute the concatenation C[i]D[i] as indicated below. This will yield K[i], which is 48 bits long.
Permuted Choice 2 (PC-2).
8. Loop back to 1.2.3.1 until K[16] has been calculated. Process a 64-bit data block.
9. Get a 64-bit data block. If the block is shorter than 64 bits, it should be padded as appropriate for the
application.
10. Perform the following permutation on the data block called Initial Permutation (IP).





22 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Input.txt
JavaCode
encrypted.txt
?w~Z5??&??E
decrypted.txt
JavaCode




























Result:
Thus the Java program to implement cryptographic algorithm using DES algorithm was executed
successfully
Outcome:
Thus the outcome of DES has been attained.

Application:

Developing any private application with high security.



23 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(b)

IMPLEMENTATION OF RSA ALGORITHM

Aim:

To write a program to implement RSA algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Generate two large random primes, P and Q, of approximately equal size.
2. Compute N = P ?Q.
3. Compute Z = (P-1) ?(Q-1).
4. Choose an integer E, 1 < E < Z, such that GCD (E, Z) = 1.
5. Compute the secret exponent D, 1 < D < Z, such that E ?D ? 1 (mod Z).
6. The public key is (N, E) and the private key is (N, D).

An example of RSA encryption :

1. Select primes P=11, Q=3
2. N = P ?Q = 11 ?3 = 33
Z = (P-1) ? (Q-1) = 10 ?2 = 20
3. Lets choose E=3
Check GCD(E, P-1) = GCD(3, 10) = 1 (i.e. 3 and 10 have no common factors except 1),
and check GCD(E, Q-1) = GCD(3, 2) = 1, therefore GCD(E, Z) = GCD(3, 20) = 1
4. Compute D such that E x D ? 1 (mod Z)
Compute D = E
^-1
mod Z = 3
^-1
mod 20
Find a value for D such that Z divides ((E x D)-1)
Find D such that 20 divides 3D-1
Simple testing (D = 1, 2, ...) gives D = 7
Check: (E ?D)-1 = 3.7 - 1 = 20, which is divisible by Z
5. Public key = (N, E) = (33, 3) and Private key = (N, D) = (33, 7)

Now say we want to encrypt the message m = 7,
Cipher code = M
^E
mod N
= 7
^3
mod 33
= 343 mod 33
= 13
Hence the ciphertext c = 13

24 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


To check decryption we compute Message? = C
^D
mod N
= 13
^7
mod 33
= 7


































25 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter a Prime number: 5
Enter another prime number: 11
Encryption keys are: 33, 55
Decryption keys are: 17, 55






























Result:

Thus the Java program to implement cryptographic algorithm using RSA algorithm was executed
successfully

Outcome:
Thus the outcome of RSA algorithm has been attained.

Application:

It?s a public key cryptography used in banking application.



26 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(c)

IMPLEMENTATION OF DIFFIEE-HELLMAN

Aim:
To write a program to implement Diffiee- hellman key exchange algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Diffiee-Hellman key exchange (DH) is a cryptographic protocol that allows two parties that have no
prior knowledge of each other to jointly establish a shared secret key.
2. The algorithm generates a public key and a private key for the client.
3. Create a KeyPairGenerator Object that generates private/public keys for the DH algorithm, using the
getInstance(String algortihm) API method.
4. Initialize the KeyGenerator so as to generate keys with a 1024-bit length, using the initialize(int
keysize) API method.
5. Create a KeyPair Object , with the genKeyPair() API method, that generates the key pair.
6. Create the PrivateKey and PublicKey Objects of the key pair, with the getPrivate() and getPublic() API
methods of the KeyPair.
7. Return for both keys the names of their primary encoded formats, using for both their getformat() ?PI
methods.



















27 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Private key format :PKCS#8 Diffie-Helman Private key parameters are:SunJCE Diffie-Hellman Private
Key:
x: a391eed7 d10d95d3 3952005c 117c56ad a3d686c5 8a60d504 2fde2db6 11686543 0025c0b7
e038f63f cb82151b a7cb24fb f6c2ab69 9c517155 67818cec 782cf977
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf f6cb9b55 f26660b7 6b9950a5 a49f9fe8 c24fbba9 d7feb7c6 1bf83b57 e7c6a8a6
150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267
5159578e bad4594f e6710710 8180b449 167123e8 4c281613 b7cf0932 8cc8a6e1
3c167a8b 547c8d28 e0a3ae1e 2bb3a675 916ea37f 0bfa2135 62f1fb62 7a01243b
cca4f1be a8519089 a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512
Public key format :X.509 Diffie-Helman Public key parameters are:SunJCE Diffie-Hellman Public Key:
y: d3fabd76 139865f1 63507aa2 6a9480a9 ba0e6979 f335ee25 2e26762c f7df3af9 d7ea612e
7540f071 f50051ae 7d061113 d0cc4ae1 03406d44 59a93dcd 6ec827d1 06edb2f0 02d48ee5 f2c9cb94
785f39df cc88ec65 5a224a1c 318b51fe 9c40445b fedb5f14 3fe83f51 82d0357c 1004652e 93c9ad81
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf c5f5ba30 f6cb9b55 6cd7813b a49f9fe8 047b1022 c24fbba9 d7feb7c6 1bf83b57
e7c6a8a6 150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267 5159578e
bad4594f e6710710 8180b449 167123e8 b7cf0932 8cc8a6e1 c167a8b 547c8d28 e0a3ae1e 2bb3a675
916ea37f 0bfa2135 62f1fb62 ca4f1be a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512

Result:

Thus the program to implement cryptographic algorithm using diffiee-hellman algorithm was executed
successfully.

Outcome:
Thus the outcome of diffiee-hellman has been attained.

Application:

Communicating the message in between two parties.



28 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(d)

IMPLEMENTATION OF MD5

Aim:
To write a program to implement MD5 algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Append padded bits - The message is padded so that its length is congruent to 448, modulo 512.
Means extended to just 64 bits shy of being of 512 bits long. ? A single ?1? bit is appended to the
message, and then ?0? bits are appended so that the length in bits equals 448 modulo 512.
2. Append length - A 64 bit representation of b is appended to the result of the previous step. The
resulting message has a length that is an exact multiple of 512 bits.
3. Initialize MD Buffer - A four-word buffer (A,B,C,D) is used to compute the message digest. ? Here
each of A,B,C,D, is a 32 bit register. These registers are initialized to the following values in
hexadecimal:
word A: 01 23 45 67 word B: 89 ab cd ef word C: fe dc ba 98 word D: 76 54 32 10
4. Process message in 16-word blocks ? Four auxiliary functions that take as input three 32-bit words
and produce as output one 32-bit word. F(X,Y,Z) = XY v not(X) Z G(X,Y,Z) = XZ v Y not(Z) H(X,Y,Z) =
X xor Y xor Z I(X,Y,Z) = Y xor (X v not(Z)).
5. Process message in 16-word blocks cont ? if the bits of X, Y, and Z are independent and unbiased,
the each bit of F(X,Y,Z), G(X,Y,Z), H(X,Y,Z), and I(X,Y,Z) will be independent and unbiased.














29 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Message digest object info:
Algorithm = MD5
Provider = SUN version 1.6
ToString = MD5 Message Digest from SUN,
MD5("") = D41D8CD98F00B204E9800998ECF8427E
MD5("abc") = 900150983CD24FB0D6963F7D28E17F72
MD5("abcdefghijklmnopqrstuvwxyz") = C3FCD3D76192E4007DFB496CCA67E13Be) SHA 1



























Result:

Thus the Java program to implement MD5 algorithm was executed successfully.

Outcome:
Thus the outcome of MD5 has been attained.

Application:

Developing any application with security.


30 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(e)

IMPLEMENTATION OF SHA-1


Aim:
To write a program to implement Secure Hash Algorithm-1

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Append Padding Bits Message is ?padded? with a 1 and as many 0?s as necessary to bring the
message length to 64 bits fewer than an even multiple of 512.
2. Append Length 64 bits are appended to the end of the padded message. These bits hold the
binary format of 64 bits indicating the length of the original message.
3. Prepare Processing Function:
SHA1 requires 80 processing functions defined as
f(t;B,C,D) = (B AND C) OR ((NOT B) AND D) ( 0 <= t <= 19)
f(t;B,C,D) = B XOR C XOR D (20 <= t <= 39)
f(t;B,C,D) = (B AND C) OR (B AND D) OR (C AND D) (40 <= t <=59)
f(t;B,C,D) = B XOR C XOR D (60 <= t <= 79)
4. Prepare Processing Constants:
SHA1 requires 80 processing constant words defined as
K(t) = 0x5A827999 ( 0 <= t <= 19)
K(t) = 0x6ED9EBA1 (20 <= t <= 39)
K(t) = 0x8F1BBCDC (40 <= t <= 59)
K(t) = 0xCA62C1D6 (60 <= t <= 79)












31 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Message digest object info:
Algorithm = SHA1
Provider = SUN version 1.6
ToString = SHA1 Message Digest from SUN,
SHA1("") = DA39A3EE5E6B4B0D3255BFEF95601890AFD80709
SHA1("abc") = A9993E364706816ABA3E25717850C26C9CD0D89D
SHA1("abcdefghijklmnopqrstuvwxyz")=32D10C7B8CF96570CA04CE37F2A19D8424
0D3A89


























Result:

Thus the Java program to implement using SHA-1 was executed successfully.
Outcome:
Thus the outcome of SHA-1 has been attained.

Application:

Presently used in banking application.



32 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




1. What is DES?
2. What is the input key length in DES?
3. What is length plain text length in DES?
4. What is Diffie-Hellman?
5. What is RSA algorithm?
6. What is SHA-1?
7. What is the output length ofplain text in DES?
8. Abbreviate RSA.
9. Abbreviate SHA-1.

































Viva-voce


33 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 3

IMPLEMENT THE SIGNATURE SCHEME ? DIGITAL SIGNATURE
STANDARD


Aim:
To write a program to implement digital signature algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. The first part of the DSA algorithm is the public key and private key generation, which can be
described as:
? Choose a prime number q, which is called the prime divisor.
? Choose another primer number p, such that p-1 mod q = 0. p is called the prime modulus.
? Choose an integer g, such that 1 < g < p, g**q mod p = 1 and g = h**((p?1)/q) mod p. q is also
called g's multiplicative order modulo p.
? Choose an integer, such that 0 < x < q.
? Compute y as g**x mod p.
? Package the public key as {p,q,g,y}.
? Package the private key as {p,q,g,x}.
2. The second part of the DSA algorithm are the signature generation and signature verification. To
generate a message signature, the sender can follow these steps:
? Generate the message digest h, using a hash algorithm like SHA1.
? Generate a random number k, such that 0 < k < q.
? Compute r as (g**k mod p) mod q. If r = 0, select a different k.
? Compute i, such that k*i mod q = 1. i is called modular multiplicative inverse of k modulo q.
? Compute s = i*(h+r*x) mod q. If s = 0, select a different k.
? Package the digital signature as {r,s}.
3. To verify a message signature, receiver of the message and digital signature can follow these steps:
? Generate the message digest h, using the same hash algorithm.
? Compute w, such that s*w mod q = 1. w is called the modular multiplicative inverse of s modulo q.
? Compute u1 = h*w mod q.
FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.


























15 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter a 3 letter string: hai
Encrypted string is :fdx
Inverse Matrix is :
0.083333336 0.41666666 -0.33333334
-0.41666666 -0.083333336 0.6666667
0.5833333 -0.083333336 -0.33333334
Decrypted string is :hai























Result:

Thus the Java program to implement substitution and transposition techniques using hill cipher
algorithm was executed successfully

Outcome:
Thus the outcome of hill cipher has been attained.

Application:

Communicating the messages in between the users with trust using above algorithm.



16 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(d)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES VIGNERE CIPHER


Aim:
To write a java program to implement vignere cipher

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm :

1. A vignere Square or vignere table consists of the alphabet written out 26 times in different rows,
each alphabet shifted cyclically to the left compared to the previous alphabet, corresponding to the
26 possible Caesar ciphers.
2. At different points in the encryption process, the cipher uses a different alphabet from one of the
rows. The alphabet used at each point depends on a repeating keyword.
3. The person sending the message to be encrypted (eg. attackatdawn) chooses a keyword and
repeats it until it matches the length of the plaintext, for example, the keyword lemon, the cipher
key will be lemonlemonle.
4. Using a VignereSquare and a CipherKey each row starts with a key letter. The remainder of the
row holds the letters A to Z (in shifted order).
5. Although there are 26 key rows shown, you will only use as many keys (different alphabets) as
there are unique letters in the key string, here just 5 keys, {L, E, M, O, N} .
6. For successive letters of the message, we are going to take successive letters of the key string,
and encipher each message letter using its corresponding key row. Choose the next letter of the
key, go along that row to find the column heading that matches the message character; the letter at
the intersection of [key-row, msg-col] is the enciphered letter.
7. ]The first letter of the plaintext, A, is paired with L, the first letter of the key. So use row L and
column A of the Vignere square, namely L. Similarly, for the second letter of the plaintext, the
second letter of the key is used; the letter at row E and column T is X. The rest of the plaintext is
enciphered in a similar fashion



17 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Plaintext: ATTACKATDAWN
Key: LEMONLEMONLE
Ciphertext: LXFOPVEFRNHR


























Result:

Thus the Java program to implement substitution and transposition techniques using vignere cipher
algorithm was executed successfully

Outcome:
Thus the outcome of vignere cipher has been attained.

Application:

Communicating the messages in between the users with privacy.



18 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(e)

IMPLEMENTATION RAIL FENCE TRANSFORMATION TECHNIQUES

Aim:

To write a java program to implement rail fence algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. In the rail fence cipher, the plaintext is written downwards and diagonally on successive "rails" of an
imaginary fence, then moving up when we reach the bottom rail.
2. When we reach the top rail, the message is written downwards again until the whole plaintext is
written out. The message is then read off in rows.
3. Write down the plain text message as a sequence of diagonals.
4. Read the plain text written in Step 1 as a sequence of rows.























19 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:



























Result:

Thus the Java program to implement substitution and transposition techniques using rail fence
algorithm was executed successfully.
Outcome:
Thus the outcome of rail fence has been attained.

Application:

Communicating the messages in between the users with privacy.

20 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00



1. What is public-key cryptography?
2. What is block cipher?
3. What is stream cipher?
4. Name a most widely used stream cipher.
5. What are the differences among encoding, encryption and hashing?
6. What are Brute Force Attacks?
7. What is the length of key in playfair cipher?
8. What is the length of matrix in playfair cipher?
9. What is the length of key in hill cipher?
10. What is the length of key in caesar cipher?
11. What is the length of key in monoalphabetic cipher?
12. What is the length of key in one time pad cipher?
13. What is the length of key in polyalphabetic cipher?
14. What is the length of key in railfence cipher?


















Viva-voce


21 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(a)

IMPLEMENTATION OF DES


Aim:
To write a program to implement DES algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. Firstly, we need to process the key.
2. Get a 64-bit key from the user. (Every 8th bit is considered a parity bit. For a key to have correct parity,
each byte should contain an odd number of "1" bits.).
3. Calculate the key schedule.
4. Perform the following permutation on the 64-bit key.
5. Split the permuted key into two halves. The first 28 bits are called C[0] and the last 28 bits are called
D[0].
6. Calculate the 16 subkeys. Start with i = 1. Perform one or two circular left shifts on both C[i-1] and D[i-1]
to get C[i] and D[i], respectively. The number of shifts per iteration are given below:
Iteration # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Left Shifts 1 1 2 2 2 2 2 2 1 2 2 2 2 2 2 1
7. Permute the concatenation C[i]D[i] as indicated below. This will yield K[i], which is 48 bits long.
Permuted Choice 2 (PC-2).
8. Loop back to 1.2.3.1 until K[16] has been calculated. Process a 64-bit data block.
9. Get a 64-bit data block. If the block is shorter than 64 bits, it should be padded as appropriate for the
application.
10. Perform the following permutation on the data block called Initial Permutation (IP).





22 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Input.txt
JavaCode
encrypted.txt
?w~Z5??&??E
decrypted.txt
JavaCode




























Result:
Thus the Java program to implement cryptographic algorithm using DES algorithm was executed
successfully
Outcome:
Thus the outcome of DES has been attained.

Application:

Developing any private application with high security.



23 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(b)

IMPLEMENTATION OF RSA ALGORITHM

Aim:

To write a program to implement RSA algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Generate two large random primes, P and Q, of approximately equal size.
2. Compute N = P ?Q.
3. Compute Z = (P-1) ?(Q-1).
4. Choose an integer E, 1 < E < Z, such that GCD (E, Z) = 1.
5. Compute the secret exponent D, 1 < D < Z, such that E ?D ? 1 (mod Z).
6. The public key is (N, E) and the private key is (N, D).

An example of RSA encryption :

1. Select primes P=11, Q=3
2. N = P ?Q = 11 ?3 = 33
Z = (P-1) ? (Q-1) = 10 ?2 = 20
3. Lets choose E=3
Check GCD(E, P-1) = GCD(3, 10) = 1 (i.e. 3 and 10 have no common factors except 1),
and check GCD(E, Q-1) = GCD(3, 2) = 1, therefore GCD(E, Z) = GCD(3, 20) = 1
4. Compute D such that E x D ? 1 (mod Z)
Compute D = E
^-1
mod Z = 3
^-1
mod 20
Find a value for D such that Z divides ((E x D)-1)
Find D such that 20 divides 3D-1
Simple testing (D = 1, 2, ...) gives D = 7
Check: (E ?D)-1 = 3.7 - 1 = 20, which is divisible by Z
5. Public key = (N, E) = (33, 3) and Private key = (N, D) = (33, 7)

Now say we want to encrypt the message m = 7,
Cipher code = M
^E
mod N
= 7
^3
mod 33
= 343 mod 33
= 13
Hence the ciphertext c = 13

24 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


To check decryption we compute Message? = C
^D
mod N
= 13
^7
mod 33
= 7


































25 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter a Prime number: 5
Enter another prime number: 11
Encryption keys are: 33, 55
Decryption keys are: 17, 55






























Result:

Thus the Java program to implement cryptographic algorithm using RSA algorithm was executed
successfully

Outcome:
Thus the outcome of RSA algorithm has been attained.

Application:

It?s a public key cryptography used in banking application.



26 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(c)

IMPLEMENTATION OF DIFFIEE-HELLMAN

Aim:
To write a program to implement Diffiee- hellman key exchange algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Diffiee-Hellman key exchange (DH) is a cryptographic protocol that allows two parties that have no
prior knowledge of each other to jointly establish a shared secret key.
2. The algorithm generates a public key and a private key for the client.
3. Create a KeyPairGenerator Object that generates private/public keys for the DH algorithm, using the
getInstance(String algortihm) API method.
4. Initialize the KeyGenerator so as to generate keys with a 1024-bit length, using the initialize(int
keysize) API method.
5. Create a KeyPair Object , with the genKeyPair() API method, that generates the key pair.
6. Create the PrivateKey and PublicKey Objects of the key pair, with the getPrivate() and getPublic() API
methods of the KeyPair.
7. Return for both keys the names of their primary encoded formats, using for both their getformat() ?PI
methods.



















27 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Private key format :PKCS#8 Diffie-Helman Private key parameters are:SunJCE Diffie-Hellman Private
Key:
x: a391eed7 d10d95d3 3952005c 117c56ad a3d686c5 8a60d504 2fde2db6 11686543 0025c0b7
e038f63f cb82151b a7cb24fb f6c2ab69 9c517155 67818cec 782cf977
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf f6cb9b55 f26660b7 6b9950a5 a49f9fe8 c24fbba9 d7feb7c6 1bf83b57 e7c6a8a6
150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267
5159578e bad4594f e6710710 8180b449 167123e8 4c281613 b7cf0932 8cc8a6e1
3c167a8b 547c8d28 e0a3ae1e 2bb3a675 916ea37f 0bfa2135 62f1fb62 7a01243b
cca4f1be a8519089 a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512
Public key format :X.509 Diffie-Helman Public key parameters are:SunJCE Diffie-Hellman Public Key:
y: d3fabd76 139865f1 63507aa2 6a9480a9 ba0e6979 f335ee25 2e26762c f7df3af9 d7ea612e
7540f071 f50051ae 7d061113 d0cc4ae1 03406d44 59a93dcd 6ec827d1 06edb2f0 02d48ee5 f2c9cb94
785f39df cc88ec65 5a224a1c 318b51fe 9c40445b fedb5f14 3fe83f51 82d0357c 1004652e 93c9ad81
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf c5f5ba30 f6cb9b55 6cd7813b a49f9fe8 047b1022 c24fbba9 d7feb7c6 1bf83b57
e7c6a8a6 150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267 5159578e
bad4594f e6710710 8180b449 167123e8 b7cf0932 8cc8a6e1 c167a8b 547c8d28 e0a3ae1e 2bb3a675
916ea37f 0bfa2135 62f1fb62 ca4f1be a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512

Result:

Thus the program to implement cryptographic algorithm using diffiee-hellman algorithm was executed
successfully.

Outcome:
Thus the outcome of diffiee-hellman has been attained.

Application:

Communicating the message in between two parties.



28 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(d)

IMPLEMENTATION OF MD5

Aim:
To write a program to implement MD5 algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Append padded bits - The message is padded so that its length is congruent to 448, modulo 512.
Means extended to just 64 bits shy of being of 512 bits long. ? A single ?1? bit is appended to the
message, and then ?0? bits are appended so that the length in bits equals 448 modulo 512.
2. Append length - A 64 bit representation of b is appended to the result of the previous step. The
resulting message has a length that is an exact multiple of 512 bits.
3. Initialize MD Buffer - A four-word buffer (A,B,C,D) is used to compute the message digest. ? Here
each of A,B,C,D, is a 32 bit register. These registers are initialized to the following values in
hexadecimal:
word A: 01 23 45 67 word B: 89 ab cd ef word C: fe dc ba 98 word D: 76 54 32 10
4. Process message in 16-word blocks ? Four auxiliary functions that take as input three 32-bit words
and produce as output one 32-bit word. F(X,Y,Z) = XY v not(X) Z G(X,Y,Z) = XZ v Y not(Z) H(X,Y,Z) =
X xor Y xor Z I(X,Y,Z) = Y xor (X v not(Z)).
5. Process message in 16-word blocks cont ? if the bits of X, Y, and Z are independent and unbiased,
the each bit of F(X,Y,Z), G(X,Y,Z), H(X,Y,Z), and I(X,Y,Z) will be independent and unbiased.














29 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Message digest object info:
Algorithm = MD5
Provider = SUN version 1.6
ToString = MD5 Message Digest from SUN,
MD5("") = D41D8CD98F00B204E9800998ECF8427E
MD5("abc") = 900150983CD24FB0D6963F7D28E17F72
MD5("abcdefghijklmnopqrstuvwxyz") = C3FCD3D76192E4007DFB496CCA67E13Be) SHA 1



























Result:

Thus the Java program to implement MD5 algorithm was executed successfully.

Outcome:
Thus the outcome of MD5 has been attained.

Application:

Developing any application with security.


30 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(e)

IMPLEMENTATION OF SHA-1


Aim:
To write a program to implement Secure Hash Algorithm-1

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Append Padding Bits Message is ?padded? with a 1 and as many 0?s as necessary to bring the
message length to 64 bits fewer than an even multiple of 512.
2. Append Length 64 bits are appended to the end of the padded message. These bits hold the
binary format of 64 bits indicating the length of the original message.
3. Prepare Processing Function:
SHA1 requires 80 processing functions defined as
f(t;B,C,D) = (B AND C) OR ((NOT B) AND D) ( 0 <= t <= 19)
f(t;B,C,D) = B XOR C XOR D (20 <= t <= 39)
f(t;B,C,D) = (B AND C) OR (B AND D) OR (C AND D) (40 <= t <=59)
f(t;B,C,D) = B XOR C XOR D (60 <= t <= 79)
4. Prepare Processing Constants:
SHA1 requires 80 processing constant words defined as
K(t) = 0x5A827999 ( 0 <= t <= 19)
K(t) = 0x6ED9EBA1 (20 <= t <= 39)
K(t) = 0x8F1BBCDC (40 <= t <= 59)
K(t) = 0xCA62C1D6 (60 <= t <= 79)












31 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Message digest object info:
Algorithm = SHA1
Provider = SUN version 1.6
ToString = SHA1 Message Digest from SUN,
SHA1("") = DA39A3EE5E6B4B0D3255BFEF95601890AFD80709
SHA1("abc") = A9993E364706816ABA3E25717850C26C9CD0D89D
SHA1("abcdefghijklmnopqrstuvwxyz")=32D10C7B8CF96570CA04CE37F2A19D8424
0D3A89


























Result:

Thus the Java program to implement using SHA-1 was executed successfully.
Outcome:
Thus the outcome of SHA-1 has been attained.

Application:

Presently used in banking application.



32 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




1. What is DES?
2. What is the input key length in DES?
3. What is length plain text length in DES?
4. What is Diffie-Hellman?
5. What is RSA algorithm?
6. What is SHA-1?
7. What is the output length ofplain text in DES?
8. Abbreviate RSA.
9. Abbreviate SHA-1.

































Viva-voce


33 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 3

IMPLEMENT THE SIGNATURE SCHEME ? DIGITAL SIGNATURE
STANDARD


Aim:
To write a program to implement digital signature algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. The first part of the DSA algorithm is the public key and private key generation, which can be
described as:
? Choose a prime number q, which is called the prime divisor.
? Choose another primer number p, such that p-1 mod q = 0. p is called the prime modulus.
? Choose an integer g, such that 1 < g < p, g**q mod p = 1 and g = h**((p?1)/q) mod p. q is also
called g's multiplicative order modulo p.
? Choose an integer, such that 0 < x < q.
? Compute y as g**x mod p.
? Package the public key as {p,q,g,y}.
? Package the private key as {p,q,g,x}.
2. The second part of the DSA algorithm are the signature generation and signature verification. To
generate a message signature, the sender can follow these steps:
? Generate the message digest h, using a hash algorithm like SHA1.
? Generate a random number k, such that 0 < k < q.
? Compute r as (g**k mod p) mod q. If r = 0, select a different k.
? Compute i, such that k*i mod q = 1. i is called modular multiplicative inverse of k modulo q.
? Compute s = i*(h+r*x) mod q. If s = 0, select a different k.
? Package the digital signature as {r,s}.
3. To verify a message signature, receiver of the message and digital signature can follow these steps:
? Generate the message digest h, using the same hash algorithm.
? Compute w, such that s*w mod q = 1. w is called the modular multiplicative inverse of s modulo q.
? Compute u1 = h*w mod q.

34 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

? Compute u2 = r*w mod q.
? Compute v = (((g**u1)*(y**u2)) mod p) mod q.
? If v == r, the digital signature is valid.






















FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

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COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

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Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

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b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.


























15 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter a 3 letter string: hai
Encrypted string is :fdx
Inverse Matrix is :
0.083333336 0.41666666 -0.33333334
-0.41666666 -0.083333336 0.6666667
0.5833333 -0.083333336 -0.33333334
Decrypted string is :hai























Result:

Thus the Java program to implement substitution and transposition techniques using hill cipher
algorithm was executed successfully

Outcome:
Thus the outcome of hill cipher has been attained.

Application:

Communicating the messages in between the users with trust using above algorithm.



16 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(d)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES VIGNERE CIPHER


Aim:
To write a java program to implement vignere cipher

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm :

1. A vignere Square or vignere table consists of the alphabet written out 26 times in different rows,
each alphabet shifted cyclically to the left compared to the previous alphabet, corresponding to the
26 possible Caesar ciphers.
2. At different points in the encryption process, the cipher uses a different alphabet from one of the
rows. The alphabet used at each point depends on a repeating keyword.
3. The person sending the message to be encrypted (eg. attackatdawn) chooses a keyword and
repeats it until it matches the length of the plaintext, for example, the keyword lemon, the cipher
key will be lemonlemonle.
4. Using a VignereSquare and a CipherKey each row starts with a key letter. The remainder of the
row holds the letters A to Z (in shifted order).
5. Although there are 26 key rows shown, you will only use as many keys (different alphabets) as
there are unique letters in the key string, here just 5 keys, {L, E, M, O, N} .
6. For successive letters of the message, we are going to take successive letters of the key string,
and encipher each message letter using its corresponding key row. Choose the next letter of the
key, go along that row to find the column heading that matches the message character; the letter at
the intersection of [key-row, msg-col] is the enciphered letter.
7. ]The first letter of the plaintext, A, is paired with L, the first letter of the key. So use row L and
column A of the Vignere square, namely L. Similarly, for the second letter of the plaintext, the
second letter of the key is used; the letter at row E and column T is X. The rest of the plaintext is
enciphered in a similar fashion



17 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Plaintext: ATTACKATDAWN
Key: LEMONLEMONLE
Ciphertext: LXFOPVEFRNHR


























Result:

Thus the Java program to implement substitution and transposition techniques using vignere cipher
algorithm was executed successfully

Outcome:
Thus the outcome of vignere cipher has been attained.

Application:

Communicating the messages in between the users with privacy.



18 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(e)

IMPLEMENTATION RAIL FENCE TRANSFORMATION TECHNIQUES

Aim:

To write a java program to implement rail fence algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. In the rail fence cipher, the plaintext is written downwards and diagonally on successive "rails" of an
imaginary fence, then moving up when we reach the bottom rail.
2. When we reach the top rail, the message is written downwards again until the whole plaintext is
written out. The message is then read off in rows.
3. Write down the plain text message as a sequence of diagonals.
4. Read the plain text written in Step 1 as a sequence of rows.























19 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:



























Result:

Thus the Java program to implement substitution and transposition techniques using rail fence
algorithm was executed successfully.
Outcome:
Thus the outcome of rail fence has been attained.

Application:

Communicating the messages in between the users with privacy.

20 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00



1. What is public-key cryptography?
2. What is block cipher?
3. What is stream cipher?
4. Name a most widely used stream cipher.
5. What are the differences among encoding, encryption and hashing?
6. What are Brute Force Attacks?
7. What is the length of key in playfair cipher?
8. What is the length of matrix in playfair cipher?
9. What is the length of key in hill cipher?
10. What is the length of key in caesar cipher?
11. What is the length of key in monoalphabetic cipher?
12. What is the length of key in one time pad cipher?
13. What is the length of key in polyalphabetic cipher?
14. What is the length of key in railfence cipher?


















Viva-voce


21 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(a)

IMPLEMENTATION OF DES


Aim:
To write a program to implement DES algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. Firstly, we need to process the key.
2. Get a 64-bit key from the user. (Every 8th bit is considered a parity bit. For a key to have correct parity,
each byte should contain an odd number of "1" bits.).
3. Calculate the key schedule.
4. Perform the following permutation on the 64-bit key.
5. Split the permuted key into two halves. The first 28 bits are called C[0] and the last 28 bits are called
D[0].
6. Calculate the 16 subkeys. Start with i = 1. Perform one or two circular left shifts on both C[i-1] and D[i-1]
to get C[i] and D[i], respectively. The number of shifts per iteration are given below:
Iteration # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Left Shifts 1 1 2 2 2 2 2 2 1 2 2 2 2 2 2 1
7. Permute the concatenation C[i]D[i] as indicated below. This will yield K[i], which is 48 bits long.
Permuted Choice 2 (PC-2).
8. Loop back to 1.2.3.1 until K[16] has been calculated. Process a 64-bit data block.
9. Get a 64-bit data block. If the block is shorter than 64 bits, it should be padded as appropriate for the
application.
10. Perform the following permutation on the data block called Initial Permutation (IP).





22 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Input.txt
JavaCode
encrypted.txt
?w~Z5??&??E
decrypted.txt
JavaCode




























Result:
Thus the Java program to implement cryptographic algorithm using DES algorithm was executed
successfully
Outcome:
Thus the outcome of DES has been attained.

Application:

Developing any private application with high security.



23 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(b)

IMPLEMENTATION OF RSA ALGORITHM

Aim:

To write a program to implement RSA algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Generate two large random primes, P and Q, of approximately equal size.
2. Compute N = P ?Q.
3. Compute Z = (P-1) ?(Q-1).
4. Choose an integer E, 1 < E < Z, such that GCD (E, Z) = 1.
5. Compute the secret exponent D, 1 < D < Z, such that E ?D ? 1 (mod Z).
6. The public key is (N, E) and the private key is (N, D).

An example of RSA encryption :

1. Select primes P=11, Q=3
2. N = P ?Q = 11 ?3 = 33
Z = (P-1) ? (Q-1) = 10 ?2 = 20
3. Lets choose E=3
Check GCD(E, P-1) = GCD(3, 10) = 1 (i.e. 3 and 10 have no common factors except 1),
and check GCD(E, Q-1) = GCD(3, 2) = 1, therefore GCD(E, Z) = GCD(3, 20) = 1
4. Compute D such that E x D ? 1 (mod Z)
Compute D = E
^-1
mod Z = 3
^-1
mod 20
Find a value for D such that Z divides ((E x D)-1)
Find D such that 20 divides 3D-1
Simple testing (D = 1, 2, ...) gives D = 7
Check: (E ?D)-1 = 3.7 - 1 = 20, which is divisible by Z
5. Public key = (N, E) = (33, 3) and Private key = (N, D) = (33, 7)

Now say we want to encrypt the message m = 7,
Cipher code = M
^E
mod N
= 7
^3
mod 33
= 343 mod 33
= 13
Hence the ciphertext c = 13

24 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


To check decryption we compute Message? = C
^D
mod N
= 13
^7
mod 33
= 7


































25 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter a Prime number: 5
Enter another prime number: 11
Encryption keys are: 33, 55
Decryption keys are: 17, 55






























Result:

Thus the Java program to implement cryptographic algorithm using RSA algorithm was executed
successfully

Outcome:
Thus the outcome of RSA algorithm has been attained.

Application:

It?s a public key cryptography used in banking application.



26 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(c)

IMPLEMENTATION OF DIFFIEE-HELLMAN

Aim:
To write a program to implement Diffiee- hellman key exchange algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Diffiee-Hellman key exchange (DH) is a cryptographic protocol that allows two parties that have no
prior knowledge of each other to jointly establish a shared secret key.
2. The algorithm generates a public key and a private key for the client.
3. Create a KeyPairGenerator Object that generates private/public keys for the DH algorithm, using the
getInstance(String algortihm) API method.
4. Initialize the KeyGenerator so as to generate keys with a 1024-bit length, using the initialize(int
keysize) API method.
5. Create a KeyPair Object , with the genKeyPair() API method, that generates the key pair.
6. Create the PrivateKey and PublicKey Objects of the key pair, with the getPrivate() and getPublic() API
methods of the KeyPair.
7. Return for both keys the names of their primary encoded formats, using for both their getformat() ?PI
methods.



















27 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Private key format :PKCS#8 Diffie-Helman Private key parameters are:SunJCE Diffie-Hellman Private
Key:
x: a391eed7 d10d95d3 3952005c 117c56ad a3d686c5 8a60d504 2fde2db6 11686543 0025c0b7
e038f63f cb82151b a7cb24fb f6c2ab69 9c517155 67818cec 782cf977
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf f6cb9b55 f26660b7 6b9950a5 a49f9fe8 c24fbba9 d7feb7c6 1bf83b57 e7c6a8a6
150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267
5159578e bad4594f e6710710 8180b449 167123e8 4c281613 b7cf0932 8cc8a6e1
3c167a8b 547c8d28 e0a3ae1e 2bb3a675 916ea37f 0bfa2135 62f1fb62 7a01243b
cca4f1be a8519089 a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512
Public key format :X.509 Diffie-Helman Public key parameters are:SunJCE Diffie-Hellman Public Key:
y: d3fabd76 139865f1 63507aa2 6a9480a9 ba0e6979 f335ee25 2e26762c f7df3af9 d7ea612e
7540f071 f50051ae 7d061113 d0cc4ae1 03406d44 59a93dcd 6ec827d1 06edb2f0 02d48ee5 f2c9cb94
785f39df cc88ec65 5a224a1c 318b51fe 9c40445b fedb5f14 3fe83f51 82d0357c 1004652e 93c9ad81
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf c5f5ba30 f6cb9b55 6cd7813b a49f9fe8 047b1022 c24fbba9 d7feb7c6 1bf83b57
e7c6a8a6 150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267 5159578e
bad4594f e6710710 8180b449 167123e8 b7cf0932 8cc8a6e1 c167a8b 547c8d28 e0a3ae1e 2bb3a675
916ea37f 0bfa2135 62f1fb62 ca4f1be a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512

Result:

Thus the program to implement cryptographic algorithm using diffiee-hellman algorithm was executed
successfully.

Outcome:
Thus the outcome of diffiee-hellman has been attained.

Application:

Communicating the message in between two parties.



28 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(d)

IMPLEMENTATION OF MD5

Aim:
To write a program to implement MD5 algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Append padded bits - The message is padded so that its length is congruent to 448, modulo 512.
Means extended to just 64 bits shy of being of 512 bits long. ? A single ?1? bit is appended to the
message, and then ?0? bits are appended so that the length in bits equals 448 modulo 512.
2. Append length - A 64 bit representation of b is appended to the result of the previous step. The
resulting message has a length that is an exact multiple of 512 bits.
3. Initialize MD Buffer - A four-word buffer (A,B,C,D) is used to compute the message digest. ? Here
each of A,B,C,D, is a 32 bit register. These registers are initialized to the following values in
hexadecimal:
word A: 01 23 45 67 word B: 89 ab cd ef word C: fe dc ba 98 word D: 76 54 32 10
4. Process message in 16-word blocks ? Four auxiliary functions that take as input three 32-bit words
and produce as output one 32-bit word. F(X,Y,Z) = XY v not(X) Z G(X,Y,Z) = XZ v Y not(Z) H(X,Y,Z) =
X xor Y xor Z I(X,Y,Z) = Y xor (X v not(Z)).
5. Process message in 16-word blocks cont ? if the bits of X, Y, and Z are independent and unbiased,
the each bit of F(X,Y,Z), G(X,Y,Z), H(X,Y,Z), and I(X,Y,Z) will be independent and unbiased.














29 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Message digest object info:
Algorithm = MD5
Provider = SUN version 1.6
ToString = MD5 Message Digest from SUN,
MD5("") = D41D8CD98F00B204E9800998ECF8427E
MD5("abc") = 900150983CD24FB0D6963F7D28E17F72
MD5("abcdefghijklmnopqrstuvwxyz") = C3FCD3D76192E4007DFB496CCA67E13Be) SHA 1



























Result:

Thus the Java program to implement MD5 algorithm was executed successfully.

Outcome:
Thus the outcome of MD5 has been attained.

Application:

Developing any application with security.


30 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(e)

IMPLEMENTATION OF SHA-1


Aim:
To write a program to implement Secure Hash Algorithm-1

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Append Padding Bits Message is ?padded? with a 1 and as many 0?s as necessary to bring the
message length to 64 bits fewer than an even multiple of 512.
2. Append Length 64 bits are appended to the end of the padded message. These bits hold the
binary format of 64 bits indicating the length of the original message.
3. Prepare Processing Function:
SHA1 requires 80 processing functions defined as
f(t;B,C,D) = (B AND C) OR ((NOT B) AND D) ( 0 <= t <= 19)
f(t;B,C,D) = B XOR C XOR D (20 <= t <= 39)
f(t;B,C,D) = (B AND C) OR (B AND D) OR (C AND D) (40 <= t <=59)
f(t;B,C,D) = B XOR C XOR D (60 <= t <= 79)
4. Prepare Processing Constants:
SHA1 requires 80 processing constant words defined as
K(t) = 0x5A827999 ( 0 <= t <= 19)
K(t) = 0x6ED9EBA1 (20 <= t <= 39)
K(t) = 0x8F1BBCDC (40 <= t <= 59)
K(t) = 0xCA62C1D6 (60 <= t <= 79)












31 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Message digest object info:
Algorithm = SHA1
Provider = SUN version 1.6
ToString = SHA1 Message Digest from SUN,
SHA1("") = DA39A3EE5E6B4B0D3255BFEF95601890AFD80709
SHA1("abc") = A9993E364706816ABA3E25717850C26C9CD0D89D
SHA1("abcdefghijklmnopqrstuvwxyz")=32D10C7B8CF96570CA04CE37F2A19D8424
0D3A89


























Result:

Thus the Java program to implement using SHA-1 was executed successfully.
Outcome:
Thus the outcome of SHA-1 has been attained.

Application:

Presently used in banking application.



32 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




1. What is DES?
2. What is the input key length in DES?
3. What is length plain text length in DES?
4. What is Diffie-Hellman?
5. What is RSA algorithm?
6. What is SHA-1?
7. What is the output length ofplain text in DES?
8. Abbreviate RSA.
9. Abbreviate SHA-1.

































Viva-voce


33 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 3

IMPLEMENT THE SIGNATURE SCHEME ? DIGITAL SIGNATURE
STANDARD


Aim:
To write a program to implement digital signature algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. The first part of the DSA algorithm is the public key and private key generation, which can be
described as:
? Choose a prime number q, which is called the prime divisor.
? Choose another primer number p, such that p-1 mod q = 0. p is called the prime modulus.
? Choose an integer g, such that 1 < g < p, g**q mod p = 1 and g = h**((p?1)/q) mod p. q is also
called g's multiplicative order modulo p.
? Choose an integer, such that 0 < x < q.
? Compute y as g**x mod p.
? Package the public key as {p,q,g,y}.
? Package the private key as {p,q,g,x}.
2. The second part of the DSA algorithm are the signature generation and signature verification. To
generate a message signature, the sender can follow these steps:
? Generate the message digest h, using a hash algorithm like SHA1.
? Generate a random number k, such that 0 < k < q.
? Compute r as (g**k mod p) mod q. If r = 0, select a different k.
? Compute i, such that k*i mod q = 1. i is called modular multiplicative inverse of k modulo q.
? Compute s = i*(h+r*x) mod q. If s = 0, select a different k.
? Package the digital signature as {r,s}.
3. To verify a message signature, receiver of the message and digital signature can follow these steps:
? Generate the message digest h, using the same hash algorithm.
? Compute w, such that s*w mod q = 1. w is called the modular multiplicative inverse of s modulo q.
? Compute u1 = h*w mod q.

34 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

? Compute u2 = r*w mod q.
? Compute v = (((g**u1)*(y**u2)) mod p) mod q.
? If v == r, the digital signature is valid.























35 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:
Signature:

imwaKe99tkM6H6hiiP0rubmb/MrYJZLiwLdRSjslF2KlA5B23az5M2LKftQFCB+NHCe5F5/YfN8OsNSNLtucrrZT
ah0SrdWSzdGCOfYLdUZmPQ72j1SkLhYspsTsUb/U6FPSYT4QebNSYobDtjKujkHdRimHI9TO4lLuqVQRdW
U= true





























Result:

Thus the programs to implement digital signature algorithm was executed successfully.

Outcome:
Thus the outcome of digital signature algorithm has been attained.

Application:

Communicating any application between the users with trust.

FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.


























15 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter a 3 letter string: hai
Encrypted string is :fdx
Inverse Matrix is :
0.083333336 0.41666666 -0.33333334
-0.41666666 -0.083333336 0.6666667
0.5833333 -0.083333336 -0.33333334
Decrypted string is :hai























Result:

Thus the Java program to implement substitution and transposition techniques using hill cipher
algorithm was executed successfully

Outcome:
Thus the outcome of hill cipher has been attained.

Application:

Communicating the messages in between the users with trust using above algorithm.



16 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(d)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES VIGNERE CIPHER


Aim:
To write a java program to implement vignere cipher

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm :

1. A vignere Square or vignere table consists of the alphabet written out 26 times in different rows,
each alphabet shifted cyclically to the left compared to the previous alphabet, corresponding to the
26 possible Caesar ciphers.
2. At different points in the encryption process, the cipher uses a different alphabet from one of the
rows. The alphabet used at each point depends on a repeating keyword.
3. The person sending the message to be encrypted (eg. attackatdawn) chooses a keyword and
repeats it until it matches the length of the plaintext, for example, the keyword lemon, the cipher
key will be lemonlemonle.
4. Using a VignereSquare and a CipherKey each row starts with a key letter. The remainder of the
row holds the letters A to Z (in shifted order).
5. Although there are 26 key rows shown, you will only use as many keys (different alphabets) as
there are unique letters in the key string, here just 5 keys, {L, E, M, O, N} .
6. For successive letters of the message, we are going to take successive letters of the key string,
and encipher each message letter using its corresponding key row. Choose the next letter of the
key, go along that row to find the column heading that matches the message character; the letter at
the intersection of [key-row, msg-col] is the enciphered letter.
7. ]The first letter of the plaintext, A, is paired with L, the first letter of the key. So use row L and
column A of the Vignere square, namely L. Similarly, for the second letter of the plaintext, the
second letter of the key is used; the letter at row E and column T is X. The rest of the plaintext is
enciphered in a similar fashion



17 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Plaintext: ATTACKATDAWN
Key: LEMONLEMONLE
Ciphertext: LXFOPVEFRNHR


























Result:

Thus the Java program to implement substitution and transposition techniques using vignere cipher
algorithm was executed successfully

Outcome:
Thus the outcome of vignere cipher has been attained.

Application:

Communicating the messages in between the users with privacy.



18 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(e)

IMPLEMENTATION RAIL FENCE TRANSFORMATION TECHNIQUES

Aim:

To write a java program to implement rail fence algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. In the rail fence cipher, the plaintext is written downwards and diagonally on successive "rails" of an
imaginary fence, then moving up when we reach the bottom rail.
2. When we reach the top rail, the message is written downwards again until the whole plaintext is
written out. The message is then read off in rows.
3. Write down the plain text message as a sequence of diagonals.
4. Read the plain text written in Step 1 as a sequence of rows.























19 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:



























Result:

Thus the Java program to implement substitution and transposition techniques using rail fence
algorithm was executed successfully.
Outcome:
Thus the outcome of rail fence has been attained.

Application:

Communicating the messages in between the users with privacy.

20 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00



1. What is public-key cryptography?
2. What is block cipher?
3. What is stream cipher?
4. Name a most widely used stream cipher.
5. What are the differences among encoding, encryption and hashing?
6. What are Brute Force Attacks?
7. What is the length of key in playfair cipher?
8. What is the length of matrix in playfair cipher?
9. What is the length of key in hill cipher?
10. What is the length of key in caesar cipher?
11. What is the length of key in monoalphabetic cipher?
12. What is the length of key in one time pad cipher?
13. What is the length of key in polyalphabetic cipher?
14. What is the length of key in railfence cipher?


















Viva-voce


21 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(a)

IMPLEMENTATION OF DES


Aim:
To write a program to implement DES algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. Firstly, we need to process the key.
2. Get a 64-bit key from the user. (Every 8th bit is considered a parity bit. For a key to have correct parity,
each byte should contain an odd number of "1" bits.).
3. Calculate the key schedule.
4. Perform the following permutation on the 64-bit key.
5. Split the permuted key into two halves. The first 28 bits are called C[0] and the last 28 bits are called
D[0].
6. Calculate the 16 subkeys. Start with i = 1. Perform one or two circular left shifts on both C[i-1] and D[i-1]
to get C[i] and D[i], respectively. The number of shifts per iteration are given below:
Iteration # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Left Shifts 1 1 2 2 2 2 2 2 1 2 2 2 2 2 2 1
7. Permute the concatenation C[i]D[i] as indicated below. This will yield K[i], which is 48 bits long.
Permuted Choice 2 (PC-2).
8. Loop back to 1.2.3.1 until K[16] has been calculated. Process a 64-bit data block.
9. Get a 64-bit data block. If the block is shorter than 64 bits, it should be padded as appropriate for the
application.
10. Perform the following permutation on the data block called Initial Permutation (IP).





22 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Input.txt
JavaCode
encrypted.txt
?w~Z5??&??E
decrypted.txt
JavaCode




























Result:
Thus the Java program to implement cryptographic algorithm using DES algorithm was executed
successfully
Outcome:
Thus the outcome of DES has been attained.

Application:

Developing any private application with high security.



23 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(b)

IMPLEMENTATION OF RSA ALGORITHM

Aim:

To write a program to implement RSA algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Generate two large random primes, P and Q, of approximately equal size.
2. Compute N = P ?Q.
3. Compute Z = (P-1) ?(Q-1).
4. Choose an integer E, 1 < E < Z, such that GCD (E, Z) = 1.
5. Compute the secret exponent D, 1 < D < Z, such that E ?D ? 1 (mod Z).
6. The public key is (N, E) and the private key is (N, D).

An example of RSA encryption :

1. Select primes P=11, Q=3
2. N = P ?Q = 11 ?3 = 33
Z = (P-1) ? (Q-1) = 10 ?2 = 20
3. Lets choose E=3
Check GCD(E, P-1) = GCD(3, 10) = 1 (i.e. 3 and 10 have no common factors except 1),
and check GCD(E, Q-1) = GCD(3, 2) = 1, therefore GCD(E, Z) = GCD(3, 20) = 1
4. Compute D such that E x D ? 1 (mod Z)
Compute D = E
^-1
mod Z = 3
^-1
mod 20
Find a value for D such that Z divides ((E x D)-1)
Find D such that 20 divides 3D-1
Simple testing (D = 1, 2, ...) gives D = 7
Check: (E ?D)-1 = 3.7 - 1 = 20, which is divisible by Z
5. Public key = (N, E) = (33, 3) and Private key = (N, D) = (33, 7)

Now say we want to encrypt the message m = 7,
Cipher code = M
^E
mod N
= 7
^3
mod 33
= 343 mod 33
= 13
Hence the ciphertext c = 13

24 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


To check decryption we compute Message? = C
^D
mod N
= 13
^7
mod 33
= 7


































25 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter a Prime number: 5
Enter another prime number: 11
Encryption keys are: 33, 55
Decryption keys are: 17, 55






























Result:

Thus the Java program to implement cryptographic algorithm using RSA algorithm was executed
successfully

Outcome:
Thus the outcome of RSA algorithm has been attained.

Application:

It?s a public key cryptography used in banking application.



26 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(c)

IMPLEMENTATION OF DIFFIEE-HELLMAN

Aim:
To write a program to implement Diffiee- hellman key exchange algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Diffiee-Hellman key exchange (DH) is a cryptographic protocol that allows two parties that have no
prior knowledge of each other to jointly establish a shared secret key.
2. The algorithm generates a public key and a private key for the client.
3. Create a KeyPairGenerator Object that generates private/public keys for the DH algorithm, using the
getInstance(String algortihm) API method.
4. Initialize the KeyGenerator so as to generate keys with a 1024-bit length, using the initialize(int
keysize) API method.
5. Create a KeyPair Object , with the genKeyPair() API method, that generates the key pair.
6. Create the PrivateKey and PublicKey Objects of the key pair, with the getPrivate() and getPublic() API
methods of the KeyPair.
7. Return for both keys the names of their primary encoded formats, using for both their getformat() ?PI
methods.



















27 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Private key format :PKCS#8 Diffie-Helman Private key parameters are:SunJCE Diffie-Hellman Private
Key:
x: a391eed7 d10d95d3 3952005c 117c56ad a3d686c5 8a60d504 2fde2db6 11686543 0025c0b7
e038f63f cb82151b a7cb24fb f6c2ab69 9c517155 67818cec 782cf977
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf f6cb9b55 f26660b7 6b9950a5 a49f9fe8 c24fbba9 d7feb7c6 1bf83b57 e7c6a8a6
150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267
5159578e bad4594f e6710710 8180b449 167123e8 4c281613 b7cf0932 8cc8a6e1
3c167a8b 547c8d28 e0a3ae1e 2bb3a675 916ea37f 0bfa2135 62f1fb62 7a01243b
cca4f1be a8519089 a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512
Public key format :X.509 Diffie-Helman Public key parameters are:SunJCE Diffie-Hellman Public Key:
y: d3fabd76 139865f1 63507aa2 6a9480a9 ba0e6979 f335ee25 2e26762c f7df3af9 d7ea612e
7540f071 f50051ae 7d061113 d0cc4ae1 03406d44 59a93dcd 6ec827d1 06edb2f0 02d48ee5 f2c9cb94
785f39df cc88ec65 5a224a1c 318b51fe 9c40445b fedb5f14 3fe83f51 82d0357c 1004652e 93c9ad81
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf c5f5ba30 f6cb9b55 6cd7813b a49f9fe8 047b1022 c24fbba9 d7feb7c6 1bf83b57
e7c6a8a6 150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267 5159578e
bad4594f e6710710 8180b449 167123e8 b7cf0932 8cc8a6e1 c167a8b 547c8d28 e0a3ae1e 2bb3a675
916ea37f 0bfa2135 62f1fb62 ca4f1be a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512

Result:

Thus the program to implement cryptographic algorithm using diffiee-hellman algorithm was executed
successfully.

Outcome:
Thus the outcome of diffiee-hellman has been attained.

Application:

Communicating the message in between two parties.



28 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(d)

IMPLEMENTATION OF MD5

Aim:
To write a program to implement MD5 algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Append padded bits - The message is padded so that its length is congruent to 448, modulo 512.
Means extended to just 64 bits shy of being of 512 bits long. ? A single ?1? bit is appended to the
message, and then ?0? bits are appended so that the length in bits equals 448 modulo 512.
2. Append length - A 64 bit representation of b is appended to the result of the previous step. The
resulting message has a length that is an exact multiple of 512 bits.
3. Initialize MD Buffer - A four-word buffer (A,B,C,D) is used to compute the message digest. ? Here
each of A,B,C,D, is a 32 bit register. These registers are initialized to the following values in
hexadecimal:
word A: 01 23 45 67 word B: 89 ab cd ef word C: fe dc ba 98 word D: 76 54 32 10
4. Process message in 16-word blocks ? Four auxiliary functions that take as input three 32-bit words
and produce as output one 32-bit word. F(X,Y,Z) = XY v not(X) Z G(X,Y,Z) = XZ v Y not(Z) H(X,Y,Z) =
X xor Y xor Z I(X,Y,Z) = Y xor (X v not(Z)).
5. Process message in 16-word blocks cont ? if the bits of X, Y, and Z are independent and unbiased,
the each bit of F(X,Y,Z), G(X,Y,Z), H(X,Y,Z), and I(X,Y,Z) will be independent and unbiased.














29 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Message digest object info:
Algorithm = MD5
Provider = SUN version 1.6
ToString = MD5 Message Digest from SUN,
MD5("") = D41D8CD98F00B204E9800998ECF8427E
MD5("abc") = 900150983CD24FB0D6963F7D28E17F72
MD5("abcdefghijklmnopqrstuvwxyz") = C3FCD3D76192E4007DFB496CCA67E13Be) SHA 1



























Result:

Thus the Java program to implement MD5 algorithm was executed successfully.

Outcome:
Thus the outcome of MD5 has been attained.

Application:

Developing any application with security.


30 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(e)

IMPLEMENTATION OF SHA-1


Aim:
To write a program to implement Secure Hash Algorithm-1

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Append Padding Bits Message is ?padded? with a 1 and as many 0?s as necessary to bring the
message length to 64 bits fewer than an even multiple of 512.
2. Append Length 64 bits are appended to the end of the padded message. These bits hold the
binary format of 64 bits indicating the length of the original message.
3. Prepare Processing Function:
SHA1 requires 80 processing functions defined as
f(t;B,C,D) = (B AND C) OR ((NOT B) AND D) ( 0 <= t <= 19)
f(t;B,C,D) = B XOR C XOR D (20 <= t <= 39)
f(t;B,C,D) = (B AND C) OR (B AND D) OR (C AND D) (40 <= t <=59)
f(t;B,C,D) = B XOR C XOR D (60 <= t <= 79)
4. Prepare Processing Constants:
SHA1 requires 80 processing constant words defined as
K(t) = 0x5A827999 ( 0 <= t <= 19)
K(t) = 0x6ED9EBA1 (20 <= t <= 39)
K(t) = 0x8F1BBCDC (40 <= t <= 59)
K(t) = 0xCA62C1D6 (60 <= t <= 79)












31 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Message digest object info:
Algorithm = SHA1
Provider = SUN version 1.6
ToString = SHA1 Message Digest from SUN,
SHA1("") = DA39A3EE5E6B4B0D3255BFEF95601890AFD80709
SHA1("abc") = A9993E364706816ABA3E25717850C26C9CD0D89D
SHA1("abcdefghijklmnopqrstuvwxyz")=32D10C7B8CF96570CA04CE37F2A19D8424
0D3A89


























Result:

Thus the Java program to implement using SHA-1 was executed successfully.
Outcome:
Thus the outcome of SHA-1 has been attained.

Application:

Presently used in banking application.



32 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




1. What is DES?
2. What is the input key length in DES?
3. What is length plain text length in DES?
4. What is Diffie-Hellman?
5. What is RSA algorithm?
6. What is SHA-1?
7. What is the output length ofplain text in DES?
8. Abbreviate RSA.
9. Abbreviate SHA-1.

































Viva-voce


33 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 3

IMPLEMENT THE SIGNATURE SCHEME ? DIGITAL SIGNATURE
STANDARD


Aim:
To write a program to implement digital signature algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. The first part of the DSA algorithm is the public key and private key generation, which can be
described as:
? Choose a prime number q, which is called the prime divisor.
? Choose another primer number p, such that p-1 mod q = 0. p is called the prime modulus.
? Choose an integer g, such that 1 < g < p, g**q mod p = 1 and g = h**((p?1)/q) mod p. q is also
called g's multiplicative order modulo p.
? Choose an integer, such that 0 < x < q.
? Compute y as g**x mod p.
? Package the public key as {p,q,g,y}.
? Package the private key as {p,q,g,x}.
2. The second part of the DSA algorithm are the signature generation and signature verification. To
generate a message signature, the sender can follow these steps:
? Generate the message digest h, using a hash algorithm like SHA1.
? Generate a random number k, such that 0 < k < q.
? Compute r as (g**k mod p) mod q. If r = 0, select a different k.
? Compute i, such that k*i mod q = 1. i is called modular multiplicative inverse of k modulo q.
? Compute s = i*(h+r*x) mod q. If s = 0, select a different k.
? Package the digital signature as {r,s}.
3. To verify a message signature, receiver of the message and digital signature can follow these steps:
? Generate the message digest h, using the same hash algorithm.
? Compute w, such that s*w mod q = 1. w is called the modular multiplicative inverse of s modulo q.
? Compute u1 = h*w mod q.

34 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

? Compute u2 = r*w mod q.
? Compute v = (((g**u1)*(y**u2)) mod p) mod q.
? If v == r, the digital signature is valid.























35 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:
Signature:

imwaKe99tkM6H6hiiP0rubmb/MrYJZLiwLdRSjslF2KlA5B23az5M2LKftQFCB+NHCe5F5/YfN8OsNSNLtucrrZT
ah0SrdWSzdGCOfYLdUZmPQ72j1SkLhYspsTsUb/U6FPSYT4QebNSYobDtjKujkHdRimHI9TO4lLuqVQRdW
U= true





























Result:

Thus the programs to implement digital signature algorithm was executed successfully.

Outcome:
Thus the outcome of digital signature algorithm has been attained.

Application:

Communicating any application between the users with trust.


36 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00





1. What is the difference between DSA and RSA?
2. What is Digital Signatures?
3. What is message authentication?
4. What are the services provided by digital certificates?
5. What are the types of DSA?
6. What are notations used in DSA?
7. Define ? Digital certificate
8. Define ? Signature




































Viva-voce

FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.


























15 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter a 3 letter string: hai
Encrypted string is :fdx
Inverse Matrix is :
0.083333336 0.41666666 -0.33333334
-0.41666666 -0.083333336 0.6666667
0.5833333 -0.083333336 -0.33333334
Decrypted string is :hai























Result:

Thus the Java program to implement substitution and transposition techniques using hill cipher
algorithm was executed successfully

Outcome:
Thus the outcome of hill cipher has been attained.

Application:

Communicating the messages in between the users with trust using above algorithm.



16 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(d)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES VIGNERE CIPHER


Aim:
To write a java program to implement vignere cipher

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm :

1. A vignere Square or vignere table consists of the alphabet written out 26 times in different rows,
each alphabet shifted cyclically to the left compared to the previous alphabet, corresponding to the
26 possible Caesar ciphers.
2. At different points in the encryption process, the cipher uses a different alphabet from one of the
rows. The alphabet used at each point depends on a repeating keyword.
3. The person sending the message to be encrypted (eg. attackatdawn) chooses a keyword and
repeats it until it matches the length of the plaintext, for example, the keyword lemon, the cipher
key will be lemonlemonle.
4. Using a VignereSquare and a CipherKey each row starts with a key letter. The remainder of the
row holds the letters A to Z (in shifted order).
5. Although there are 26 key rows shown, you will only use as many keys (different alphabets) as
there are unique letters in the key string, here just 5 keys, {L, E, M, O, N} .
6. For successive letters of the message, we are going to take successive letters of the key string,
and encipher each message letter using its corresponding key row. Choose the next letter of the
key, go along that row to find the column heading that matches the message character; the letter at
the intersection of [key-row, msg-col] is the enciphered letter.
7. ]The first letter of the plaintext, A, is paired with L, the first letter of the key. So use row L and
column A of the Vignere square, namely L. Similarly, for the second letter of the plaintext, the
second letter of the key is used; the letter at row E and column T is X. The rest of the plaintext is
enciphered in a similar fashion



17 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Plaintext: ATTACKATDAWN
Key: LEMONLEMONLE
Ciphertext: LXFOPVEFRNHR


























Result:

Thus the Java program to implement substitution and transposition techniques using vignere cipher
algorithm was executed successfully

Outcome:
Thus the outcome of vignere cipher has been attained.

Application:

Communicating the messages in between the users with privacy.



18 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(e)

IMPLEMENTATION RAIL FENCE TRANSFORMATION TECHNIQUES

Aim:

To write a java program to implement rail fence algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. In the rail fence cipher, the plaintext is written downwards and diagonally on successive "rails" of an
imaginary fence, then moving up when we reach the bottom rail.
2. When we reach the top rail, the message is written downwards again until the whole plaintext is
written out. The message is then read off in rows.
3. Write down the plain text message as a sequence of diagonals.
4. Read the plain text written in Step 1 as a sequence of rows.























19 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:



























Result:

Thus the Java program to implement substitution and transposition techniques using rail fence
algorithm was executed successfully.
Outcome:
Thus the outcome of rail fence has been attained.

Application:

Communicating the messages in between the users with privacy.

20 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00



1. What is public-key cryptography?
2. What is block cipher?
3. What is stream cipher?
4. Name a most widely used stream cipher.
5. What are the differences among encoding, encryption and hashing?
6. What are Brute Force Attacks?
7. What is the length of key in playfair cipher?
8. What is the length of matrix in playfair cipher?
9. What is the length of key in hill cipher?
10. What is the length of key in caesar cipher?
11. What is the length of key in monoalphabetic cipher?
12. What is the length of key in one time pad cipher?
13. What is the length of key in polyalphabetic cipher?
14. What is the length of key in railfence cipher?


















Viva-voce


21 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(a)

IMPLEMENTATION OF DES


Aim:
To write a program to implement DES algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. Firstly, we need to process the key.
2. Get a 64-bit key from the user. (Every 8th bit is considered a parity bit. For a key to have correct parity,
each byte should contain an odd number of "1" bits.).
3. Calculate the key schedule.
4. Perform the following permutation on the 64-bit key.
5. Split the permuted key into two halves. The first 28 bits are called C[0] and the last 28 bits are called
D[0].
6. Calculate the 16 subkeys. Start with i = 1. Perform one or two circular left shifts on both C[i-1] and D[i-1]
to get C[i] and D[i], respectively. The number of shifts per iteration are given below:
Iteration # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Left Shifts 1 1 2 2 2 2 2 2 1 2 2 2 2 2 2 1
7. Permute the concatenation C[i]D[i] as indicated below. This will yield K[i], which is 48 bits long.
Permuted Choice 2 (PC-2).
8. Loop back to 1.2.3.1 until K[16] has been calculated. Process a 64-bit data block.
9. Get a 64-bit data block. If the block is shorter than 64 bits, it should be padded as appropriate for the
application.
10. Perform the following permutation on the data block called Initial Permutation (IP).





22 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Input.txt
JavaCode
encrypted.txt
?w~Z5??&??E
decrypted.txt
JavaCode




























Result:
Thus the Java program to implement cryptographic algorithm using DES algorithm was executed
successfully
Outcome:
Thus the outcome of DES has been attained.

Application:

Developing any private application with high security.



23 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(b)

IMPLEMENTATION OF RSA ALGORITHM

Aim:

To write a program to implement RSA algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Generate two large random primes, P and Q, of approximately equal size.
2. Compute N = P ?Q.
3. Compute Z = (P-1) ?(Q-1).
4. Choose an integer E, 1 < E < Z, such that GCD (E, Z) = 1.
5. Compute the secret exponent D, 1 < D < Z, such that E ?D ? 1 (mod Z).
6. The public key is (N, E) and the private key is (N, D).

An example of RSA encryption :

1. Select primes P=11, Q=3
2. N = P ?Q = 11 ?3 = 33
Z = (P-1) ? (Q-1) = 10 ?2 = 20
3. Lets choose E=3
Check GCD(E, P-1) = GCD(3, 10) = 1 (i.e. 3 and 10 have no common factors except 1),
and check GCD(E, Q-1) = GCD(3, 2) = 1, therefore GCD(E, Z) = GCD(3, 20) = 1
4. Compute D such that E x D ? 1 (mod Z)
Compute D = E
^-1
mod Z = 3
^-1
mod 20
Find a value for D such that Z divides ((E x D)-1)
Find D such that 20 divides 3D-1
Simple testing (D = 1, 2, ...) gives D = 7
Check: (E ?D)-1 = 3.7 - 1 = 20, which is divisible by Z
5. Public key = (N, E) = (33, 3) and Private key = (N, D) = (33, 7)

Now say we want to encrypt the message m = 7,
Cipher code = M
^E
mod N
= 7
^3
mod 33
= 343 mod 33
= 13
Hence the ciphertext c = 13

24 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


To check decryption we compute Message? = C
^D
mod N
= 13
^7
mod 33
= 7


































25 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter a Prime number: 5
Enter another prime number: 11
Encryption keys are: 33, 55
Decryption keys are: 17, 55






























Result:

Thus the Java program to implement cryptographic algorithm using RSA algorithm was executed
successfully

Outcome:
Thus the outcome of RSA algorithm has been attained.

Application:

It?s a public key cryptography used in banking application.



26 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(c)

IMPLEMENTATION OF DIFFIEE-HELLMAN

Aim:
To write a program to implement Diffiee- hellman key exchange algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Diffiee-Hellman key exchange (DH) is a cryptographic protocol that allows two parties that have no
prior knowledge of each other to jointly establish a shared secret key.
2. The algorithm generates a public key and a private key for the client.
3. Create a KeyPairGenerator Object that generates private/public keys for the DH algorithm, using the
getInstance(String algortihm) API method.
4. Initialize the KeyGenerator so as to generate keys with a 1024-bit length, using the initialize(int
keysize) API method.
5. Create a KeyPair Object , with the genKeyPair() API method, that generates the key pair.
6. Create the PrivateKey and PublicKey Objects of the key pair, with the getPrivate() and getPublic() API
methods of the KeyPair.
7. Return for both keys the names of their primary encoded formats, using for both their getformat() ?PI
methods.



















27 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Private key format :PKCS#8 Diffie-Helman Private key parameters are:SunJCE Diffie-Hellman Private
Key:
x: a391eed7 d10d95d3 3952005c 117c56ad a3d686c5 8a60d504 2fde2db6 11686543 0025c0b7
e038f63f cb82151b a7cb24fb f6c2ab69 9c517155 67818cec 782cf977
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf f6cb9b55 f26660b7 6b9950a5 a49f9fe8 c24fbba9 d7feb7c6 1bf83b57 e7c6a8a6
150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267
5159578e bad4594f e6710710 8180b449 167123e8 4c281613 b7cf0932 8cc8a6e1
3c167a8b 547c8d28 e0a3ae1e 2bb3a675 916ea37f 0bfa2135 62f1fb62 7a01243b
cca4f1be a8519089 a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512
Public key format :X.509 Diffie-Helman Public key parameters are:SunJCE Diffie-Hellman Public Key:
y: d3fabd76 139865f1 63507aa2 6a9480a9 ba0e6979 f335ee25 2e26762c f7df3af9 d7ea612e
7540f071 f50051ae 7d061113 d0cc4ae1 03406d44 59a93dcd 6ec827d1 06edb2f0 02d48ee5 f2c9cb94
785f39df cc88ec65 5a224a1c 318b51fe 9c40445b fedb5f14 3fe83f51 82d0357c 1004652e 93c9ad81
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf c5f5ba30 f6cb9b55 6cd7813b a49f9fe8 047b1022 c24fbba9 d7feb7c6 1bf83b57
e7c6a8a6 150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267 5159578e
bad4594f e6710710 8180b449 167123e8 b7cf0932 8cc8a6e1 c167a8b 547c8d28 e0a3ae1e 2bb3a675
916ea37f 0bfa2135 62f1fb62 ca4f1be a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512

Result:

Thus the program to implement cryptographic algorithm using diffiee-hellman algorithm was executed
successfully.

Outcome:
Thus the outcome of diffiee-hellman has been attained.

Application:

Communicating the message in between two parties.



28 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(d)

IMPLEMENTATION OF MD5

Aim:
To write a program to implement MD5 algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Append padded bits - The message is padded so that its length is congruent to 448, modulo 512.
Means extended to just 64 bits shy of being of 512 bits long. ? A single ?1? bit is appended to the
message, and then ?0? bits are appended so that the length in bits equals 448 modulo 512.
2. Append length - A 64 bit representation of b is appended to the result of the previous step. The
resulting message has a length that is an exact multiple of 512 bits.
3. Initialize MD Buffer - A four-word buffer (A,B,C,D) is used to compute the message digest. ? Here
each of A,B,C,D, is a 32 bit register. These registers are initialized to the following values in
hexadecimal:
word A: 01 23 45 67 word B: 89 ab cd ef word C: fe dc ba 98 word D: 76 54 32 10
4. Process message in 16-word blocks ? Four auxiliary functions that take as input three 32-bit words
and produce as output one 32-bit word. F(X,Y,Z) = XY v not(X) Z G(X,Y,Z) = XZ v Y not(Z) H(X,Y,Z) =
X xor Y xor Z I(X,Y,Z) = Y xor (X v not(Z)).
5. Process message in 16-word blocks cont ? if the bits of X, Y, and Z are independent and unbiased,
the each bit of F(X,Y,Z), G(X,Y,Z), H(X,Y,Z), and I(X,Y,Z) will be independent and unbiased.














29 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Message digest object info:
Algorithm = MD5
Provider = SUN version 1.6
ToString = MD5 Message Digest from SUN,
MD5("") = D41D8CD98F00B204E9800998ECF8427E
MD5("abc") = 900150983CD24FB0D6963F7D28E17F72
MD5("abcdefghijklmnopqrstuvwxyz") = C3FCD3D76192E4007DFB496CCA67E13Be) SHA 1



























Result:

Thus the Java program to implement MD5 algorithm was executed successfully.

Outcome:
Thus the outcome of MD5 has been attained.

Application:

Developing any application with security.


30 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(e)

IMPLEMENTATION OF SHA-1


Aim:
To write a program to implement Secure Hash Algorithm-1

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Append Padding Bits Message is ?padded? with a 1 and as many 0?s as necessary to bring the
message length to 64 bits fewer than an even multiple of 512.
2. Append Length 64 bits are appended to the end of the padded message. These bits hold the
binary format of 64 bits indicating the length of the original message.
3. Prepare Processing Function:
SHA1 requires 80 processing functions defined as
f(t;B,C,D) = (B AND C) OR ((NOT B) AND D) ( 0 <= t <= 19)
f(t;B,C,D) = B XOR C XOR D (20 <= t <= 39)
f(t;B,C,D) = (B AND C) OR (B AND D) OR (C AND D) (40 <= t <=59)
f(t;B,C,D) = B XOR C XOR D (60 <= t <= 79)
4. Prepare Processing Constants:
SHA1 requires 80 processing constant words defined as
K(t) = 0x5A827999 ( 0 <= t <= 19)
K(t) = 0x6ED9EBA1 (20 <= t <= 39)
K(t) = 0x8F1BBCDC (40 <= t <= 59)
K(t) = 0xCA62C1D6 (60 <= t <= 79)












31 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Message digest object info:
Algorithm = SHA1
Provider = SUN version 1.6
ToString = SHA1 Message Digest from SUN,
SHA1("") = DA39A3EE5E6B4B0D3255BFEF95601890AFD80709
SHA1("abc") = A9993E364706816ABA3E25717850C26C9CD0D89D
SHA1("abcdefghijklmnopqrstuvwxyz")=32D10C7B8CF96570CA04CE37F2A19D8424
0D3A89


























Result:

Thus the Java program to implement using SHA-1 was executed successfully.
Outcome:
Thus the outcome of SHA-1 has been attained.

Application:

Presently used in banking application.



32 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




1. What is DES?
2. What is the input key length in DES?
3. What is length plain text length in DES?
4. What is Diffie-Hellman?
5. What is RSA algorithm?
6. What is SHA-1?
7. What is the output length ofplain text in DES?
8. Abbreviate RSA.
9. Abbreviate SHA-1.

































Viva-voce


33 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 3

IMPLEMENT THE SIGNATURE SCHEME ? DIGITAL SIGNATURE
STANDARD


Aim:
To write a program to implement digital signature algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. The first part of the DSA algorithm is the public key and private key generation, which can be
described as:
? Choose a prime number q, which is called the prime divisor.
? Choose another primer number p, such that p-1 mod q = 0. p is called the prime modulus.
? Choose an integer g, such that 1 < g < p, g**q mod p = 1 and g = h**((p?1)/q) mod p. q is also
called g's multiplicative order modulo p.
? Choose an integer, such that 0 < x < q.
? Compute y as g**x mod p.
? Package the public key as {p,q,g,y}.
? Package the private key as {p,q,g,x}.
2. The second part of the DSA algorithm are the signature generation and signature verification. To
generate a message signature, the sender can follow these steps:
? Generate the message digest h, using a hash algorithm like SHA1.
? Generate a random number k, such that 0 < k < q.
? Compute r as (g**k mod p) mod q. If r = 0, select a different k.
? Compute i, such that k*i mod q = 1. i is called modular multiplicative inverse of k modulo q.
? Compute s = i*(h+r*x) mod q. If s = 0, select a different k.
? Package the digital signature as {r,s}.
3. To verify a message signature, receiver of the message and digital signature can follow these steps:
? Generate the message digest h, using the same hash algorithm.
? Compute w, such that s*w mod q = 1. w is called the modular multiplicative inverse of s modulo q.
? Compute u1 = h*w mod q.

34 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

? Compute u2 = r*w mod q.
? Compute v = (((g**u1)*(y**u2)) mod p) mod q.
? If v == r, the digital signature is valid.























35 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:
Signature:

imwaKe99tkM6H6hiiP0rubmb/MrYJZLiwLdRSjslF2KlA5B23az5M2LKftQFCB+NHCe5F5/YfN8OsNSNLtucrrZT
ah0SrdWSzdGCOfYLdUZmPQ72j1SkLhYspsTsUb/U6FPSYT4QebNSYobDtjKujkHdRimHI9TO4lLuqVQRdW
U= true





























Result:

Thus the programs to implement digital signature algorithm was executed successfully.

Outcome:
Thus the outcome of digital signature algorithm has been attained.

Application:

Communicating any application between the users with trust.


36 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00





1. What is the difference between DSA and RSA?
2. What is Digital Signatures?
3. What is message authentication?
4. What are the services provided by digital certificates?
5. What are the types of DSA?
6. What are notations used in DSA?
7. Define ? Digital certificate
8. Define ? Signature




































Viva-voce


37 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 4

DEMONSTRATE HOW TO PROVIDE SECURE DATA STORAGE,
SECURE DATA TRANSMISSION AND FOR CREATING DIGITAL
SIGNATURES (GnuPG)

Aim:
To implement secure data storage, transmission and for create digital signatures

Software requirements:
C, C++ compilers, Java or equivalent compiler GnuPG.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:
1. The first part of the DSA algorithm is the public key and private key generation, which can be
described.
2. Choose a prime number q, which is called the prime divisor.
3. Choose another primer number p, such that p-1 mod q = 0. p is called the prime modulus.
4. The second part of the DSA algorithm is the signature generation and signature verification.
5. To generate a message signature.
6. Generate the message digest h, using a hash algorithm and compute it.










FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.


























15 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter a 3 letter string: hai
Encrypted string is :fdx
Inverse Matrix is :
0.083333336 0.41666666 -0.33333334
-0.41666666 -0.083333336 0.6666667
0.5833333 -0.083333336 -0.33333334
Decrypted string is :hai























Result:

Thus the Java program to implement substitution and transposition techniques using hill cipher
algorithm was executed successfully

Outcome:
Thus the outcome of hill cipher has been attained.

Application:

Communicating the messages in between the users with trust using above algorithm.



16 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(d)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES VIGNERE CIPHER


Aim:
To write a java program to implement vignere cipher

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm :

1. A vignere Square or vignere table consists of the alphabet written out 26 times in different rows,
each alphabet shifted cyclically to the left compared to the previous alphabet, corresponding to the
26 possible Caesar ciphers.
2. At different points in the encryption process, the cipher uses a different alphabet from one of the
rows. The alphabet used at each point depends on a repeating keyword.
3. The person sending the message to be encrypted (eg. attackatdawn) chooses a keyword and
repeats it until it matches the length of the plaintext, for example, the keyword lemon, the cipher
key will be lemonlemonle.
4. Using a VignereSquare and a CipherKey each row starts with a key letter. The remainder of the
row holds the letters A to Z (in shifted order).
5. Although there are 26 key rows shown, you will only use as many keys (different alphabets) as
there are unique letters in the key string, here just 5 keys, {L, E, M, O, N} .
6. For successive letters of the message, we are going to take successive letters of the key string,
and encipher each message letter using its corresponding key row. Choose the next letter of the
key, go along that row to find the column heading that matches the message character; the letter at
the intersection of [key-row, msg-col] is the enciphered letter.
7. ]The first letter of the plaintext, A, is paired with L, the first letter of the key. So use row L and
column A of the Vignere square, namely L. Similarly, for the second letter of the plaintext, the
second letter of the key is used; the letter at row E and column T is X. The rest of the plaintext is
enciphered in a similar fashion



17 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Plaintext: ATTACKATDAWN
Key: LEMONLEMONLE
Ciphertext: LXFOPVEFRNHR


























Result:

Thus the Java program to implement substitution and transposition techniques using vignere cipher
algorithm was executed successfully

Outcome:
Thus the outcome of vignere cipher has been attained.

Application:

Communicating the messages in between the users with privacy.



18 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(e)

IMPLEMENTATION RAIL FENCE TRANSFORMATION TECHNIQUES

Aim:

To write a java program to implement rail fence algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. In the rail fence cipher, the plaintext is written downwards and diagonally on successive "rails" of an
imaginary fence, then moving up when we reach the bottom rail.
2. When we reach the top rail, the message is written downwards again until the whole plaintext is
written out. The message is then read off in rows.
3. Write down the plain text message as a sequence of diagonals.
4. Read the plain text written in Step 1 as a sequence of rows.























19 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:



























Result:

Thus the Java program to implement substitution and transposition techniques using rail fence
algorithm was executed successfully.
Outcome:
Thus the outcome of rail fence has been attained.

Application:

Communicating the messages in between the users with privacy.

20 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00



1. What is public-key cryptography?
2. What is block cipher?
3. What is stream cipher?
4. Name a most widely used stream cipher.
5. What are the differences among encoding, encryption and hashing?
6. What are Brute Force Attacks?
7. What is the length of key in playfair cipher?
8. What is the length of matrix in playfair cipher?
9. What is the length of key in hill cipher?
10. What is the length of key in caesar cipher?
11. What is the length of key in monoalphabetic cipher?
12. What is the length of key in one time pad cipher?
13. What is the length of key in polyalphabetic cipher?
14. What is the length of key in railfence cipher?


















Viva-voce


21 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(a)

IMPLEMENTATION OF DES


Aim:
To write a program to implement DES algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. Firstly, we need to process the key.
2. Get a 64-bit key from the user. (Every 8th bit is considered a parity bit. For a key to have correct parity,
each byte should contain an odd number of "1" bits.).
3. Calculate the key schedule.
4. Perform the following permutation on the 64-bit key.
5. Split the permuted key into two halves. The first 28 bits are called C[0] and the last 28 bits are called
D[0].
6. Calculate the 16 subkeys. Start with i = 1. Perform one or two circular left shifts on both C[i-1] and D[i-1]
to get C[i] and D[i], respectively. The number of shifts per iteration are given below:
Iteration # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Left Shifts 1 1 2 2 2 2 2 2 1 2 2 2 2 2 2 1
7. Permute the concatenation C[i]D[i] as indicated below. This will yield K[i], which is 48 bits long.
Permuted Choice 2 (PC-2).
8. Loop back to 1.2.3.1 until K[16] has been calculated. Process a 64-bit data block.
9. Get a 64-bit data block. If the block is shorter than 64 bits, it should be padded as appropriate for the
application.
10. Perform the following permutation on the data block called Initial Permutation (IP).





22 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Input.txt
JavaCode
encrypted.txt
?w~Z5??&??E
decrypted.txt
JavaCode




























Result:
Thus the Java program to implement cryptographic algorithm using DES algorithm was executed
successfully
Outcome:
Thus the outcome of DES has been attained.

Application:

Developing any private application with high security.



23 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(b)

IMPLEMENTATION OF RSA ALGORITHM

Aim:

To write a program to implement RSA algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Generate two large random primes, P and Q, of approximately equal size.
2. Compute N = P ?Q.
3. Compute Z = (P-1) ?(Q-1).
4. Choose an integer E, 1 < E < Z, such that GCD (E, Z) = 1.
5. Compute the secret exponent D, 1 < D < Z, such that E ?D ? 1 (mod Z).
6. The public key is (N, E) and the private key is (N, D).

An example of RSA encryption :

1. Select primes P=11, Q=3
2. N = P ?Q = 11 ?3 = 33
Z = (P-1) ? (Q-1) = 10 ?2 = 20
3. Lets choose E=3
Check GCD(E, P-1) = GCD(3, 10) = 1 (i.e. 3 and 10 have no common factors except 1),
and check GCD(E, Q-1) = GCD(3, 2) = 1, therefore GCD(E, Z) = GCD(3, 20) = 1
4. Compute D such that E x D ? 1 (mod Z)
Compute D = E
^-1
mod Z = 3
^-1
mod 20
Find a value for D such that Z divides ((E x D)-1)
Find D such that 20 divides 3D-1
Simple testing (D = 1, 2, ...) gives D = 7
Check: (E ?D)-1 = 3.7 - 1 = 20, which is divisible by Z
5. Public key = (N, E) = (33, 3) and Private key = (N, D) = (33, 7)

Now say we want to encrypt the message m = 7,
Cipher code = M
^E
mod N
= 7
^3
mod 33
= 343 mod 33
= 13
Hence the ciphertext c = 13

24 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


To check decryption we compute Message? = C
^D
mod N
= 13
^7
mod 33
= 7


































25 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter a Prime number: 5
Enter another prime number: 11
Encryption keys are: 33, 55
Decryption keys are: 17, 55






























Result:

Thus the Java program to implement cryptographic algorithm using RSA algorithm was executed
successfully

Outcome:
Thus the outcome of RSA algorithm has been attained.

Application:

It?s a public key cryptography used in banking application.



26 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(c)

IMPLEMENTATION OF DIFFIEE-HELLMAN

Aim:
To write a program to implement Diffiee- hellman key exchange algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Diffiee-Hellman key exchange (DH) is a cryptographic protocol that allows two parties that have no
prior knowledge of each other to jointly establish a shared secret key.
2. The algorithm generates a public key and a private key for the client.
3. Create a KeyPairGenerator Object that generates private/public keys for the DH algorithm, using the
getInstance(String algortihm) API method.
4. Initialize the KeyGenerator so as to generate keys with a 1024-bit length, using the initialize(int
keysize) API method.
5. Create a KeyPair Object , with the genKeyPair() API method, that generates the key pair.
6. Create the PrivateKey and PublicKey Objects of the key pair, with the getPrivate() and getPublic() API
methods of the KeyPair.
7. Return for both keys the names of their primary encoded formats, using for both their getformat() ?PI
methods.



















27 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Private key format :PKCS#8 Diffie-Helman Private key parameters are:SunJCE Diffie-Hellman Private
Key:
x: a391eed7 d10d95d3 3952005c 117c56ad a3d686c5 8a60d504 2fde2db6 11686543 0025c0b7
e038f63f cb82151b a7cb24fb f6c2ab69 9c517155 67818cec 782cf977
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf f6cb9b55 f26660b7 6b9950a5 a49f9fe8 c24fbba9 d7feb7c6 1bf83b57 e7c6a8a6
150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267
5159578e bad4594f e6710710 8180b449 167123e8 4c281613 b7cf0932 8cc8a6e1
3c167a8b 547c8d28 e0a3ae1e 2bb3a675 916ea37f 0bfa2135 62f1fb62 7a01243b
cca4f1be a8519089 a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512
Public key format :X.509 Diffie-Helman Public key parameters are:SunJCE Diffie-Hellman Public Key:
y: d3fabd76 139865f1 63507aa2 6a9480a9 ba0e6979 f335ee25 2e26762c f7df3af9 d7ea612e
7540f071 f50051ae 7d061113 d0cc4ae1 03406d44 59a93dcd 6ec827d1 06edb2f0 02d48ee5 f2c9cb94
785f39df cc88ec65 5a224a1c 318b51fe 9c40445b fedb5f14 3fe83f51 82d0357c 1004652e 93c9ad81
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf c5f5ba30 f6cb9b55 6cd7813b a49f9fe8 047b1022 c24fbba9 d7feb7c6 1bf83b57
e7c6a8a6 150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267 5159578e
bad4594f e6710710 8180b449 167123e8 b7cf0932 8cc8a6e1 c167a8b 547c8d28 e0a3ae1e 2bb3a675
916ea37f 0bfa2135 62f1fb62 ca4f1be a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512

Result:

Thus the program to implement cryptographic algorithm using diffiee-hellman algorithm was executed
successfully.

Outcome:
Thus the outcome of diffiee-hellman has been attained.

Application:

Communicating the message in between two parties.



28 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(d)

IMPLEMENTATION OF MD5

Aim:
To write a program to implement MD5 algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Append padded bits - The message is padded so that its length is congruent to 448, modulo 512.
Means extended to just 64 bits shy of being of 512 bits long. ? A single ?1? bit is appended to the
message, and then ?0? bits are appended so that the length in bits equals 448 modulo 512.
2. Append length - A 64 bit representation of b is appended to the result of the previous step. The
resulting message has a length that is an exact multiple of 512 bits.
3. Initialize MD Buffer - A four-word buffer (A,B,C,D) is used to compute the message digest. ? Here
each of A,B,C,D, is a 32 bit register. These registers are initialized to the following values in
hexadecimal:
word A: 01 23 45 67 word B: 89 ab cd ef word C: fe dc ba 98 word D: 76 54 32 10
4. Process message in 16-word blocks ? Four auxiliary functions that take as input three 32-bit words
and produce as output one 32-bit word. F(X,Y,Z) = XY v not(X) Z G(X,Y,Z) = XZ v Y not(Z) H(X,Y,Z) =
X xor Y xor Z I(X,Y,Z) = Y xor (X v not(Z)).
5. Process message in 16-word blocks cont ? if the bits of X, Y, and Z are independent and unbiased,
the each bit of F(X,Y,Z), G(X,Y,Z), H(X,Y,Z), and I(X,Y,Z) will be independent and unbiased.














29 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Message digest object info:
Algorithm = MD5
Provider = SUN version 1.6
ToString = MD5 Message Digest from SUN,
MD5("") = D41D8CD98F00B204E9800998ECF8427E
MD5("abc") = 900150983CD24FB0D6963F7D28E17F72
MD5("abcdefghijklmnopqrstuvwxyz") = C3FCD3D76192E4007DFB496CCA67E13Be) SHA 1



























Result:

Thus the Java program to implement MD5 algorithm was executed successfully.

Outcome:
Thus the outcome of MD5 has been attained.

Application:

Developing any application with security.


30 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(e)

IMPLEMENTATION OF SHA-1


Aim:
To write a program to implement Secure Hash Algorithm-1

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Append Padding Bits Message is ?padded? with a 1 and as many 0?s as necessary to bring the
message length to 64 bits fewer than an even multiple of 512.
2. Append Length 64 bits are appended to the end of the padded message. These bits hold the
binary format of 64 bits indicating the length of the original message.
3. Prepare Processing Function:
SHA1 requires 80 processing functions defined as
f(t;B,C,D) = (B AND C) OR ((NOT B) AND D) ( 0 <= t <= 19)
f(t;B,C,D) = B XOR C XOR D (20 <= t <= 39)
f(t;B,C,D) = (B AND C) OR (B AND D) OR (C AND D) (40 <= t <=59)
f(t;B,C,D) = B XOR C XOR D (60 <= t <= 79)
4. Prepare Processing Constants:
SHA1 requires 80 processing constant words defined as
K(t) = 0x5A827999 ( 0 <= t <= 19)
K(t) = 0x6ED9EBA1 (20 <= t <= 39)
K(t) = 0x8F1BBCDC (40 <= t <= 59)
K(t) = 0xCA62C1D6 (60 <= t <= 79)












31 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Message digest object info:
Algorithm = SHA1
Provider = SUN version 1.6
ToString = SHA1 Message Digest from SUN,
SHA1("") = DA39A3EE5E6B4B0D3255BFEF95601890AFD80709
SHA1("abc") = A9993E364706816ABA3E25717850C26C9CD0D89D
SHA1("abcdefghijklmnopqrstuvwxyz")=32D10C7B8CF96570CA04CE37F2A19D8424
0D3A89


























Result:

Thus the Java program to implement using SHA-1 was executed successfully.
Outcome:
Thus the outcome of SHA-1 has been attained.

Application:

Presently used in banking application.



32 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




1. What is DES?
2. What is the input key length in DES?
3. What is length plain text length in DES?
4. What is Diffie-Hellman?
5. What is RSA algorithm?
6. What is SHA-1?
7. What is the output length ofplain text in DES?
8. Abbreviate RSA.
9. Abbreviate SHA-1.

































Viva-voce


33 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 3

IMPLEMENT THE SIGNATURE SCHEME ? DIGITAL SIGNATURE
STANDARD


Aim:
To write a program to implement digital signature algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. The first part of the DSA algorithm is the public key and private key generation, which can be
described as:
? Choose a prime number q, which is called the prime divisor.
? Choose another primer number p, such that p-1 mod q = 0. p is called the prime modulus.
? Choose an integer g, such that 1 < g < p, g**q mod p = 1 and g = h**((p?1)/q) mod p. q is also
called g's multiplicative order modulo p.
? Choose an integer, such that 0 < x < q.
? Compute y as g**x mod p.
? Package the public key as {p,q,g,y}.
? Package the private key as {p,q,g,x}.
2. The second part of the DSA algorithm are the signature generation and signature verification. To
generate a message signature, the sender can follow these steps:
? Generate the message digest h, using a hash algorithm like SHA1.
? Generate a random number k, such that 0 < k < q.
? Compute r as (g**k mod p) mod q. If r = 0, select a different k.
? Compute i, such that k*i mod q = 1. i is called modular multiplicative inverse of k modulo q.
? Compute s = i*(h+r*x) mod q. If s = 0, select a different k.
? Package the digital signature as {r,s}.
3. To verify a message signature, receiver of the message and digital signature can follow these steps:
? Generate the message digest h, using the same hash algorithm.
? Compute w, such that s*w mod q = 1. w is called the modular multiplicative inverse of s modulo q.
? Compute u1 = h*w mod q.

34 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

? Compute u2 = r*w mod q.
? Compute v = (((g**u1)*(y**u2)) mod p) mod q.
? If v == r, the digital signature is valid.























35 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:
Signature:

imwaKe99tkM6H6hiiP0rubmb/MrYJZLiwLdRSjslF2KlA5B23az5M2LKftQFCB+NHCe5F5/YfN8OsNSNLtucrrZT
ah0SrdWSzdGCOfYLdUZmPQ72j1SkLhYspsTsUb/U6FPSYT4QebNSYobDtjKujkHdRimHI9TO4lLuqVQRdW
U= true





























Result:

Thus the programs to implement digital signature algorithm was executed successfully.

Outcome:
Thus the outcome of digital signature algorithm has been attained.

Application:

Communicating any application between the users with trust.


36 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00





1. What is the difference between DSA and RSA?
2. What is Digital Signatures?
3. What is message authentication?
4. What are the services provided by digital certificates?
5. What are the types of DSA?
6. What are notations used in DSA?
7. Define ? Digital certificate
8. Define ? Signature




































Viva-voce


37 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 4

DEMONSTRATE HOW TO PROVIDE SECURE DATA STORAGE,
SECURE DATA TRANSMISSION AND FOR CREATING DIGITAL
SIGNATURES (GnuPG)

Aim:
To implement secure data storage, transmission and for create digital signatures

Software requirements:
C, C++ compilers, Java or equivalent compiler GnuPG.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:
1. The first part of the DSA algorithm is the public key and private key generation, which can be
described.
2. Choose a prime number q, which is called the prime divisor.
3. Choose another primer number p, such that p-1 mod q = 0. p is called the prime modulus.
4. The second part of the DSA algorithm is the signature generation and signature verification.
5. To generate a message signature.
6. Generate the message digest h, using a hash algorithm and compute it.











38 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00































Result:
Thus the experiment to perform secure data storage, transmission were done and digital signature
was created successfully.
Outcome:
Thus the outcome of secure data storage, transmission has been attained.

Application:

It can be used in defense for communicating securely.

FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.


























15 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter a 3 letter string: hai
Encrypted string is :fdx
Inverse Matrix is :
0.083333336 0.41666666 -0.33333334
-0.41666666 -0.083333336 0.6666667
0.5833333 -0.083333336 -0.33333334
Decrypted string is :hai























Result:

Thus the Java program to implement substitution and transposition techniques using hill cipher
algorithm was executed successfully

Outcome:
Thus the outcome of hill cipher has been attained.

Application:

Communicating the messages in between the users with trust using above algorithm.



16 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(d)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES VIGNERE CIPHER


Aim:
To write a java program to implement vignere cipher

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm :

1. A vignere Square or vignere table consists of the alphabet written out 26 times in different rows,
each alphabet shifted cyclically to the left compared to the previous alphabet, corresponding to the
26 possible Caesar ciphers.
2. At different points in the encryption process, the cipher uses a different alphabet from one of the
rows. The alphabet used at each point depends on a repeating keyword.
3. The person sending the message to be encrypted (eg. attackatdawn) chooses a keyword and
repeats it until it matches the length of the plaintext, for example, the keyword lemon, the cipher
key will be lemonlemonle.
4. Using a VignereSquare and a CipherKey each row starts with a key letter. The remainder of the
row holds the letters A to Z (in shifted order).
5. Although there are 26 key rows shown, you will only use as many keys (different alphabets) as
there are unique letters in the key string, here just 5 keys, {L, E, M, O, N} .
6. For successive letters of the message, we are going to take successive letters of the key string,
and encipher each message letter using its corresponding key row. Choose the next letter of the
key, go along that row to find the column heading that matches the message character; the letter at
the intersection of [key-row, msg-col] is the enciphered letter.
7. ]The first letter of the plaintext, A, is paired with L, the first letter of the key. So use row L and
column A of the Vignere square, namely L. Similarly, for the second letter of the plaintext, the
second letter of the key is used; the letter at row E and column T is X. The rest of the plaintext is
enciphered in a similar fashion



17 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Plaintext: ATTACKATDAWN
Key: LEMONLEMONLE
Ciphertext: LXFOPVEFRNHR


























Result:

Thus the Java program to implement substitution and transposition techniques using vignere cipher
algorithm was executed successfully

Outcome:
Thus the outcome of vignere cipher has been attained.

Application:

Communicating the messages in between the users with privacy.



18 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(e)

IMPLEMENTATION RAIL FENCE TRANSFORMATION TECHNIQUES

Aim:

To write a java program to implement rail fence algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. In the rail fence cipher, the plaintext is written downwards and diagonally on successive "rails" of an
imaginary fence, then moving up when we reach the bottom rail.
2. When we reach the top rail, the message is written downwards again until the whole plaintext is
written out. The message is then read off in rows.
3. Write down the plain text message as a sequence of diagonals.
4. Read the plain text written in Step 1 as a sequence of rows.























19 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:



























Result:

Thus the Java program to implement substitution and transposition techniques using rail fence
algorithm was executed successfully.
Outcome:
Thus the outcome of rail fence has been attained.

Application:

Communicating the messages in between the users with privacy.

20 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00



1. What is public-key cryptography?
2. What is block cipher?
3. What is stream cipher?
4. Name a most widely used stream cipher.
5. What are the differences among encoding, encryption and hashing?
6. What are Brute Force Attacks?
7. What is the length of key in playfair cipher?
8. What is the length of matrix in playfair cipher?
9. What is the length of key in hill cipher?
10. What is the length of key in caesar cipher?
11. What is the length of key in monoalphabetic cipher?
12. What is the length of key in one time pad cipher?
13. What is the length of key in polyalphabetic cipher?
14. What is the length of key in railfence cipher?


















Viva-voce


21 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(a)

IMPLEMENTATION OF DES


Aim:
To write a program to implement DES algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. Firstly, we need to process the key.
2. Get a 64-bit key from the user. (Every 8th bit is considered a parity bit. For a key to have correct parity,
each byte should contain an odd number of "1" bits.).
3. Calculate the key schedule.
4. Perform the following permutation on the 64-bit key.
5. Split the permuted key into two halves. The first 28 bits are called C[0] and the last 28 bits are called
D[0].
6. Calculate the 16 subkeys. Start with i = 1. Perform one or two circular left shifts on both C[i-1] and D[i-1]
to get C[i] and D[i], respectively. The number of shifts per iteration are given below:
Iteration # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Left Shifts 1 1 2 2 2 2 2 2 1 2 2 2 2 2 2 1
7. Permute the concatenation C[i]D[i] as indicated below. This will yield K[i], which is 48 bits long.
Permuted Choice 2 (PC-2).
8. Loop back to 1.2.3.1 until K[16] has been calculated. Process a 64-bit data block.
9. Get a 64-bit data block. If the block is shorter than 64 bits, it should be padded as appropriate for the
application.
10. Perform the following permutation on the data block called Initial Permutation (IP).





22 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Input.txt
JavaCode
encrypted.txt
?w~Z5??&??E
decrypted.txt
JavaCode




























Result:
Thus the Java program to implement cryptographic algorithm using DES algorithm was executed
successfully
Outcome:
Thus the outcome of DES has been attained.

Application:

Developing any private application with high security.



23 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(b)

IMPLEMENTATION OF RSA ALGORITHM

Aim:

To write a program to implement RSA algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Generate two large random primes, P and Q, of approximately equal size.
2. Compute N = P ?Q.
3. Compute Z = (P-1) ?(Q-1).
4. Choose an integer E, 1 < E < Z, such that GCD (E, Z) = 1.
5. Compute the secret exponent D, 1 < D < Z, such that E ?D ? 1 (mod Z).
6. The public key is (N, E) and the private key is (N, D).

An example of RSA encryption :

1. Select primes P=11, Q=3
2. N = P ?Q = 11 ?3 = 33
Z = (P-1) ? (Q-1) = 10 ?2 = 20
3. Lets choose E=3
Check GCD(E, P-1) = GCD(3, 10) = 1 (i.e. 3 and 10 have no common factors except 1),
and check GCD(E, Q-1) = GCD(3, 2) = 1, therefore GCD(E, Z) = GCD(3, 20) = 1
4. Compute D such that E x D ? 1 (mod Z)
Compute D = E
^-1
mod Z = 3
^-1
mod 20
Find a value for D such that Z divides ((E x D)-1)
Find D such that 20 divides 3D-1
Simple testing (D = 1, 2, ...) gives D = 7
Check: (E ?D)-1 = 3.7 - 1 = 20, which is divisible by Z
5. Public key = (N, E) = (33, 3) and Private key = (N, D) = (33, 7)

Now say we want to encrypt the message m = 7,
Cipher code = M
^E
mod N
= 7
^3
mod 33
= 343 mod 33
= 13
Hence the ciphertext c = 13

24 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


To check decryption we compute Message? = C
^D
mod N
= 13
^7
mod 33
= 7


































25 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter a Prime number: 5
Enter another prime number: 11
Encryption keys are: 33, 55
Decryption keys are: 17, 55






























Result:

Thus the Java program to implement cryptographic algorithm using RSA algorithm was executed
successfully

Outcome:
Thus the outcome of RSA algorithm has been attained.

Application:

It?s a public key cryptography used in banking application.



26 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(c)

IMPLEMENTATION OF DIFFIEE-HELLMAN

Aim:
To write a program to implement Diffiee- hellman key exchange algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Diffiee-Hellman key exchange (DH) is a cryptographic protocol that allows two parties that have no
prior knowledge of each other to jointly establish a shared secret key.
2. The algorithm generates a public key and a private key for the client.
3. Create a KeyPairGenerator Object that generates private/public keys for the DH algorithm, using the
getInstance(String algortihm) API method.
4. Initialize the KeyGenerator so as to generate keys with a 1024-bit length, using the initialize(int
keysize) API method.
5. Create a KeyPair Object , with the genKeyPair() API method, that generates the key pair.
6. Create the PrivateKey and PublicKey Objects of the key pair, with the getPrivate() and getPublic() API
methods of the KeyPair.
7. Return for both keys the names of their primary encoded formats, using for both their getformat() ?PI
methods.



















27 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Private key format :PKCS#8 Diffie-Helman Private key parameters are:SunJCE Diffie-Hellman Private
Key:
x: a391eed7 d10d95d3 3952005c 117c56ad a3d686c5 8a60d504 2fde2db6 11686543 0025c0b7
e038f63f cb82151b a7cb24fb f6c2ab69 9c517155 67818cec 782cf977
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf f6cb9b55 f26660b7 6b9950a5 a49f9fe8 c24fbba9 d7feb7c6 1bf83b57 e7c6a8a6
150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267
5159578e bad4594f e6710710 8180b449 167123e8 4c281613 b7cf0932 8cc8a6e1
3c167a8b 547c8d28 e0a3ae1e 2bb3a675 916ea37f 0bfa2135 62f1fb62 7a01243b
cca4f1be a8519089 a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512
Public key format :X.509 Diffie-Helman Public key parameters are:SunJCE Diffie-Hellman Public Key:
y: d3fabd76 139865f1 63507aa2 6a9480a9 ba0e6979 f335ee25 2e26762c f7df3af9 d7ea612e
7540f071 f50051ae 7d061113 d0cc4ae1 03406d44 59a93dcd 6ec827d1 06edb2f0 02d48ee5 f2c9cb94
785f39df cc88ec65 5a224a1c 318b51fe 9c40445b fedb5f14 3fe83f51 82d0357c 1004652e 93c9ad81
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf c5f5ba30 f6cb9b55 6cd7813b a49f9fe8 047b1022 c24fbba9 d7feb7c6 1bf83b57
e7c6a8a6 150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267 5159578e
bad4594f e6710710 8180b449 167123e8 b7cf0932 8cc8a6e1 c167a8b 547c8d28 e0a3ae1e 2bb3a675
916ea37f 0bfa2135 62f1fb62 ca4f1be a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512

Result:

Thus the program to implement cryptographic algorithm using diffiee-hellman algorithm was executed
successfully.

Outcome:
Thus the outcome of diffiee-hellman has been attained.

Application:

Communicating the message in between two parties.



28 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(d)

IMPLEMENTATION OF MD5

Aim:
To write a program to implement MD5 algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Append padded bits - The message is padded so that its length is congruent to 448, modulo 512.
Means extended to just 64 bits shy of being of 512 bits long. ? A single ?1? bit is appended to the
message, and then ?0? bits are appended so that the length in bits equals 448 modulo 512.
2. Append length - A 64 bit representation of b is appended to the result of the previous step. The
resulting message has a length that is an exact multiple of 512 bits.
3. Initialize MD Buffer - A four-word buffer (A,B,C,D) is used to compute the message digest. ? Here
each of A,B,C,D, is a 32 bit register. These registers are initialized to the following values in
hexadecimal:
word A: 01 23 45 67 word B: 89 ab cd ef word C: fe dc ba 98 word D: 76 54 32 10
4. Process message in 16-word blocks ? Four auxiliary functions that take as input three 32-bit words
and produce as output one 32-bit word. F(X,Y,Z) = XY v not(X) Z G(X,Y,Z) = XZ v Y not(Z) H(X,Y,Z) =
X xor Y xor Z I(X,Y,Z) = Y xor (X v not(Z)).
5. Process message in 16-word blocks cont ? if the bits of X, Y, and Z are independent and unbiased,
the each bit of F(X,Y,Z), G(X,Y,Z), H(X,Y,Z), and I(X,Y,Z) will be independent and unbiased.














29 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Message digest object info:
Algorithm = MD5
Provider = SUN version 1.6
ToString = MD5 Message Digest from SUN,
MD5("") = D41D8CD98F00B204E9800998ECF8427E
MD5("abc") = 900150983CD24FB0D6963F7D28E17F72
MD5("abcdefghijklmnopqrstuvwxyz") = C3FCD3D76192E4007DFB496CCA67E13Be) SHA 1



























Result:

Thus the Java program to implement MD5 algorithm was executed successfully.

Outcome:
Thus the outcome of MD5 has been attained.

Application:

Developing any application with security.


30 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(e)

IMPLEMENTATION OF SHA-1


Aim:
To write a program to implement Secure Hash Algorithm-1

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Append Padding Bits Message is ?padded? with a 1 and as many 0?s as necessary to bring the
message length to 64 bits fewer than an even multiple of 512.
2. Append Length 64 bits are appended to the end of the padded message. These bits hold the
binary format of 64 bits indicating the length of the original message.
3. Prepare Processing Function:
SHA1 requires 80 processing functions defined as
f(t;B,C,D) = (B AND C) OR ((NOT B) AND D) ( 0 <= t <= 19)
f(t;B,C,D) = B XOR C XOR D (20 <= t <= 39)
f(t;B,C,D) = (B AND C) OR (B AND D) OR (C AND D) (40 <= t <=59)
f(t;B,C,D) = B XOR C XOR D (60 <= t <= 79)
4. Prepare Processing Constants:
SHA1 requires 80 processing constant words defined as
K(t) = 0x5A827999 ( 0 <= t <= 19)
K(t) = 0x6ED9EBA1 (20 <= t <= 39)
K(t) = 0x8F1BBCDC (40 <= t <= 59)
K(t) = 0xCA62C1D6 (60 <= t <= 79)












31 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Message digest object info:
Algorithm = SHA1
Provider = SUN version 1.6
ToString = SHA1 Message Digest from SUN,
SHA1("") = DA39A3EE5E6B4B0D3255BFEF95601890AFD80709
SHA1("abc") = A9993E364706816ABA3E25717850C26C9CD0D89D
SHA1("abcdefghijklmnopqrstuvwxyz")=32D10C7B8CF96570CA04CE37F2A19D8424
0D3A89


























Result:

Thus the Java program to implement using SHA-1 was executed successfully.
Outcome:
Thus the outcome of SHA-1 has been attained.

Application:

Presently used in banking application.



32 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




1. What is DES?
2. What is the input key length in DES?
3. What is length plain text length in DES?
4. What is Diffie-Hellman?
5. What is RSA algorithm?
6. What is SHA-1?
7. What is the output length ofplain text in DES?
8. Abbreviate RSA.
9. Abbreviate SHA-1.

































Viva-voce


33 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 3

IMPLEMENT THE SIGNATURE SCHEME ? DIGITAL SIGNATURE
STANDARD


Aim:
To write a program to implement digital signature algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. The first part of the DSA algorithm is the public key and private key generation, which can be
described as:
? Choose a prime number q, which is called the prime divisor.
? Choose another primer number p, such that p-1 mod q = 0. p is called the prime modulus.
? Choose an integer g, such that 1 < g < p, g**q mod p = 1 and g = h**((p?1)/q) mod p. q is also
called g's multiplicative order modulo p.
? Choose an integer, such that 0 < x < q.
? Compute y as g**x mod p.
? Package the public key as {p,q,g,y}.
? Package the private key as {p,q,g,x}.
2. The second part of the DSA algorithm are the signature generation and signature verification. To
generate a message signature, the sender can follow these steps:
? Generate the message digest h, using a hash algorithm like SHA1.
? Generate a random number k, such that 0 < k < q.
? Compute r as (g**k mod p) mod q. If r = 0, select a different k.
? Compute i, such that k*i mod q = 1. i is called modular multiplicative inverse of k modulo q.
? Compute s = i*(h+r*x) mod q. If s = 0, select a different k.
? Package the digital signature as {r,s}.
3. To verify a message signature, receiver of the message and digital signature can follow these steps:
? Generate the message digest h, using the same hash algorithm.
? Compute w, such that s*w mod q = 1. w is called the modular multiplicative inverse of s modulo q.
? Compute u1 = h*w mod q.

34 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

? Compute u2 = r*w mod q.
? Compute v = (((g**u1)*(y**u2)) mod p) mod q.
? If v == r, the digital signature is valid.























35 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:
Signature:

imwaKe99tkM6H6hiiP0rubmb/MrYJZLiwLdRSjslF2KlA5B23az5M2LKftQFCB+NHCe5F5/YfN8OsNSNLtucrrZT
ah0SrdWSzdGCOfYLdUZmPQ72j1SkLhYspsTsUb/U6FPSYT4QebNSYobDtjKujkHdRimHI9TO4lLuqVQRdW
U= true





























Result:

Thus the programs to implement digital signature algorithm was executed successfully.

Outcome:
Thus the outcome of digital signature algorithm has been attained.

Application:

Communicating any application between the users with trust.


36 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00





1. What is the difference between DSA and RSA?
2. What is Digital Signatures?
3. What is message authentication?
4. What are the services provided by digital certificates?
5. What are the types of DSA?
6. What are notations used in DSA?
7. Define ? Digital certificate
8. Define ? Signature




































Viva-voce


37 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 4

DEMONSTRATE HOW TO PROVIDE SECURE DATA STORAGE,
SECURE DATA TRANSMISSION AND FOR CREATING DIGITAL
SIGNATURES (GnuPG)

Aim:
To implement secure data storage, transmission and for create digital signatures

Software requirements:
C, C++ compilers, Java or equivalent compiler GnuPG.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:
1. The first part of the DSA algorithm is the public key and private key generation, which can be
described.
2. Choose a prime number q, which is called the prime divisor.
3. Choose another primer number p, such that p-1 mod q = 0. p is called the prime modulus.
4. The second part of the DSA algorithm is the signature generation and signature verification.
5. To generate a message signature.
6. Generate the message digest h, using a hash algorithm and compute it.











38 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00































Result:
Thus the experiment to perform secure data storage, transmission were done and digital signature
was created successfully.
Outcome:
Thus the outcome of secure data storage, transmission has been attained.

Application:

It can be used in defense for communicating securely.


39 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00



1. What are Digital certificates?
2. What is Secure Sockets Layer (SSL)?
3. What is the technology available to ensure data privacy and integrity during transmission?
4. What are the services provided by digital certificates?










































Viva-voce

FirstRanker.com - FirstRanker's Choice

1 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




?



DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

CS6513 ? Security Laboratory

VII SEMESTER - R 2013









Name : ______________________________________
Register No. : ______________________________________
Section : ______________________________________



LABORATORY MANUAL

2 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00




is committed to provide highly disciplined, conscientious and
enterprising professionals conforming to global standards through value based quality education and training.


? To provide competent technical manpower capable of meeting requirements of the industry
? To contribute to the promotion of Academic Excellence in pursuit of Technical Education at different
levels
? To train the students to sell his brawn and brain to the highest bidder but to never put a price tag on
heart and soul

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

To strive for acquiring, applying and imparting knowledge in Computer Science and Engineering
through quality education and to provide enthusiastic professionals with commitment


? To educate the students with the state-of-art technologies to meet the growing challenges of the
electronics industry
? To carry out research through continuous interaction with research institutes and industry, on
advances in communication systems
? To provide the students with strong ground rules to facilitate them for systematic learning, innovation
and ethical practices









VISION
VISION
MISSION
MISSION

3 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME EDUCATIONAL OBJECTIVES (PEOs)
1. Fundamentals
To impart students with fundamental knowledge in Mathematics, Science and fundamentals of
engineering that will would them to be successful professionals
2. Core Competence
To provide students with sound knowledge in engineering and experimental skills to identify complex
software problems in industry and to develop practical solution for them
3. Breadth
To provide relevant training and experience to bridge the gap between theory and practice this
enables to find solutions for real time problem in industry and organization and to design products
requiring interdisciplinary skills
4. Professionalism skills
To bestow students with adequate training and provide opportunities to work as team that will build up
their communication skills, individual leadership and supportive qualities and to develop them to adapt and
work in ever changing technologies
5. Lifelong Learning
To develop the ability of students to establish themselves as professionals in Computer Science and
Engineering and to create awareness about the need for lifelong learning and pursuing advanced degrees












4 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAMME OUTCOMES (POs)
a) To apply basic knowledge of Mathematics, Science and engineering fundamentals in Computer
Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same in the
career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problems and develop an efficient practical solutions
e) To create, select and apply appropriate technique, resources, modern engineering and IT tools
f) To understand their roles as professionals and give the best to the soicety
g) To develop a system that will meet expected need with realistic constraints such as economical,
environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to convey in both
verbal and written forms
i) To engage lifelong learning and exhibit their technical skills
j) To develop and manage projects in multidisciplinary environments













5 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

PROGRAM OUTCOMES


On completion of the B.E. (CSE) degree, the graduates will be able
a) To apply the basic knowledge of Mathematics, Science and engineering fundamentals in
Computer Science and Engineering field
b) To design and conduct experiments as well as to analyze and interpret and apply the same
in the career
c) To design and develop innovative and creative software applications
d) To understand a complex real world problem and develop an efficient practical solution
e) To create, select and apply appropriate techniques, resources, modern engineering and IT
tools
f) To understand their roles as a professionals and give the best to the society
g) To develop a system that will meet expected needs within realistic constraints such as
economical, environmental, social, political, ethical, safe and sustainable
h) To communicate effectively and make others understand exactly what they are trying to
convey in both verbal and written forms
i) To work in a team as team member or a leader and make unique contributions and work
with coordination
j) To engage in lifelong learning and exhibit their technical skills
k) To develop and manage projects in multidisciplinary environments




















6 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

CS6711 - Security Laboratory
SYLLABUS


? Be exposed to the different cipher techniques
? Learn to implement the algorithms like DES, RSA, MD5, SHA-1
? Understand the Digital Signature Standard
? Learn to use network security tools like GnuPG, KF sensor, Net Strumbler
? Be familiar with the intrusion detection system

LIST OF EXPERIMENTS

1. Implement the following Substitution & Transposition Techniques concepts:
a) Caesar Cipher
b) Playfair Cipher
c) Hill Cipher
d) Vignere Cipher
e) Rail fence ? row & Column Transformation

2. Implement the following algorithms
a) DES
b) RSA Algorithm
c) Diffie-Hellman
d) MD5
e) SHA-1

3. Implement the SIGNATURE SCHEME - Digital Signature Standard

4. Demonstrate how to provide secure data storage, secure data transmission and for
creating digital signatures (GnuPG).

5. Setup a honey pot and monitor the honeypot on network (KF Sensor)

6. Installation of rootkits and study about the variety of options

7. Perform wireless audit on an access point or a router and decrypt WEP and WPA.( Net
Stumbler)

8. Demonstrate intrusion detection system (ids) using any tool (snort or any other s/w).

COURSE OBJECTIVES

7 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

COURSE OUTCOMES
? Implement the cipher techniques
? Apply the mathematical foundation required for various cryptographic algorithms
? Develop the various security algorithms
? Design the signature scheme by applying Digital Signature Standard
? Use different open source tools for network security and analysis
? Demonstrate the intrusion detection system




































8 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


INDEX





S.No. Name of the Experiment
Page Number
1. Implementation of Substitution and Transposition Techniques

a) Caesar Cipher 9
b) Playfair Cipher 11
c) Hill Cipher 14
d) Vignere Cipher 16
e) Rail Fence Cipher 18
2. Implementation of Cryptographic Algorithms

a) DES 21
b) RSA Algorithm 23
c) Diffie-Hellman Algorithm 26
d) MD5 28
e) SHA-1 30
3. Implement the SIGNATURE SCHEME - Digital Signature Standard 33
4.
Providing secure data storage, secure data transmission and creating
digital signatures

37
5. Setup a Honey Pot and Monitor the Honeypot on Network

40
6. Installation of rootkits and study the variety of options

44
7.
Perform wireless audit on an access point or a router and decrypt WEP and
WPA( Net Stumbler)

49
8. Demonstrate intrusion detection system

52
ADDITIONAL EXPERIMENTS BEYOND THE SYLLABUS
9.
Demonstrate network protocol analyzer using any tool

55
10.
Demonstrate SQL Injection using any tool

58

9 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(a)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES CAESAR CIPHER

Aim:

To write a program to implement substitution and transposition techniques using Caesar cipher
algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Caesar cipher is an example of a substitution cipher in which plaintext letters in the original
message are replaced (substituted for) by cipher text letters
2. The easiest way to understand this is to consider that there are two alphabets:
PLAIN_ALPHABET: ABCDEFGHIJKLMNOPQRSTUVWXYZ
CIPHER_ALPHABET: DEFGHIJKLMNOPQRSTUVWXYZABC
3. The cipher alphabet is a shifted version of the plain alphabet. In this case, each letter in the
cipher alphabet has to be shifted by 3 places to the right
4. The shift -- ( i.e., the number 3 ) is the secret key which must be shared by Alice and Bob if
they want to send secret messages using this cipher
5. To encrypt the message MEET ME AT THE DOCK we would replace all the Ms in the
message with the corresponding letter from the cipher alphabet
6. So M is replaced by P and we would replace all the E?s by H and so on. Thus, the encryption of our
message would be PHHW PH DW WLH GRFN














10 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter any String: Hello World
Enter the Key: 5
Encrypted String is: MjqqtBtwqi
Decrypted String is: Hello World




























Result:

Thus the Java program to implement substitution and transposition techniques using caesar cipher
algorithm was executed successfully

Outcome:
Thus the outcome of implementing caesar cipher has been attained.

Application:

Communicating the message in between the users with privacy.



11 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(b)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES PLAYFAIR CIPHER

Aim:
To write a program to implement playfair cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. The playfair cipher was the first practical digraph substitution cipher. The technique encrypts pairs of
letters (digraphs), instead of single letters as in the simple substitution cipher
2. The 'key' for a playfair cipher is generally a word, for the sake of example we will choose 'monarchy'.
This is then used to generate a 'key square', e.g.
m o n a r
c h y b d
e f g i k
l p q s t
u v w x z

3. Any sequence of 25 letters can be used as a key, so long as all letters are in it and there are no
repeats. Note that there is no 'j', it is combined with 'i'. We now apply the encryption rules to encrypt
the plaintext
i). Remove any punctuation or characters that are not present in the key square (this may mean
spelling out numbers, punctuation etc.)
ii) Identify any double letters in the plaintext and replace the second occurrence with an 'x'
e.g. 'hammer' -> 'hamxer'
iii) If the plaintext has an odd number of characters, append an 'x' to the end to make it even
iv) Break the plaintext into pairs of letters, e.g. 'hamxer' -> 'ha mx er'
v) The algorithm now works on each of the letter pairs
vi) Locate the letters in the key square, (the examples given are using the key square above)
a. If the letters are in different rows and columns, replace the pair with the letters on the same
row respectively but at the other pair of corners of the rectangle defined by the original pair.
The order is important ? the first encrypted letter of the pair is the one that lies on the same
row as the first plaintext letter. 'ha' -> 'bo', 'es' -> 'il'

12 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

b. If the letters appear on the same row of the table, replace them with the letters to their
immediate right respectively (wrapping around to the left side of the row if a letter in the
original pair was on the right side of the row). 'ma' -> 'or', 'lp' -> 'pq'
c. If the letters appear on the same column of the table, replace them with the letters
immediately below respectively (wrapping around to the top side of the column if a letter in the
original pair was on the bottom side of the column). 'rk' -> 'dt', 'pv' -> 'vo'













































13 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter the text to be encrypted: OR

m * * a *
* * * * *
* * * * *
l * * s *
* * * * *
Hence, al -> ms
* * * * *
* h y b d
* * * * *
* * * * *
* * * * *
Hence, hb -> yd
* * n * *
* * y * *
* * * * *
* * q * *
* * w * *
Hence, nq -> yw
plaintext: wearediscoveredsaveyourselfx
ciphertext: ugrmkcsxhmufmkbtoxgcmvatluiv



Result:

Thus the Java program to implement substitution and transposition techniques using playfair cipher
algorithm was executed successfully

Outcome:
Thus the outcome of playfair cipher has been attained.

Application:

Communicating the message in between the users.







14 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(c)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES HILL CIPHER
Aim:
To write a program to implement hill cipher algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. In a Hill cipher encryption, the plaintext message is broken up into blocks of length n, according to the
matrix chosen.
2. Each block of plaintext letters is then converted into a vector of numbers and is dotted with the matrix.
3. The results are then converted back to letters and the cipher text message is produced.
4. For decryption of the cipher text message, the inverse of the encryption matrix must be found once
found, the decryption matrix is then dotted with each -block of cipher text, producing the plaintext
message.


























15 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Enter a 3 letter string: hai
Encrypted string is :fdx
Inverse Matrix is :
0.083333336 0.41666666 -0.33333334
-0.41666666 -0.083333336 0.6666667
0.5833333 -0.083333336 -0.33333334
Decrypted string is :hai























Result:

Thus the Java program to implement substitution and transposition techniques using hill cipher
algorithm was executed successfully

Outcome:
Thus the outcome of hill cipher has been attained.

Application:

Communicating the messages in between the users with trust using above algorithm.



16 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(d)

IMPLEMENTATION OF SUBSTITUTION AND TRANSPOSITION
TECHNIQUES VIGNERE CIPHER


Aim:
To write a java program to implement vignere cipher

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm :

1. A vignere Square or vignere table consists of the alphabet written out 26 times in different rows,
each alphabet shifted cyclically to the left compared to the previous alphabet, corresponding to the
26 possible Caesar ciphers.
2. At different points in the encryption process, the cipher uses a different alphabet from one of the
rows. The alphabet used at each point depends on a repeating keyword.
3. The person sending the message to be encrypted (eg. attackatdawn) chooses a keyword and
repeats it until it matches the length of the plaintext, for example, the keyword lemon, the cipher
key will be lemonlemonle.
4. Using a VignereSquare and a CipherKey each row starts with a key letter. The remainder of the
row holds the letters A to Z (in shifted order).
5. Although there are 26 key rows shown, you will only use as many keys (different alphabets) as
there are unique letters in the key string, here just 5 keys, {L, E, M, O, N} .
6. For successive letters of the message, we are going to take successive letters of the key string,
and encipher each message letter using its corresponding key row. Choose the next letter of the
key, go along that row to find the column heading that matches the message character; the letter at
the intersection of [key-row, msg-col] is the enciphered letter.
7. ]The first letter of the plaintext, A, is paired with L, the first letter of the key. So use row L and
column A of the Vignere square, namely L. Similarly, for the second letter of the plaintext, the
second letter of the key is used; the letter at row E and column T is X. The rest of the plaintext is
enciphered in a similar fashion



17 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Plaintext: ATTACKATDAWN
Key: LEMONLEMONLE
Ciphertext: LXFOPVEFRNHR


























Result:

Thus the Java program to implement substitution and transposition techniques using vignere cipher
algorithm was executed successfully

Outcome:
Thus the outcome of vignere cipher has been attained.

Application:

Communicating the messages in between the users with privacy.



18 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 1(e)

IMPLEMENTATION RAIL FENCE TRANSFORMATION TECHNIQUES

Aim:

To write a java program to implement rail fence algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.


Algorithm:

1. In the rail fence cipher, the plaintext is written downwards and diagonally on successive "rails" of an
imaginary fence, then moving up when we reach the bottom rail.
2. When we reach the top rail, the message is written downwards again until the whole plaintext is
written out. The message is then read off in rows.
3. Write down the plain text message as a sequence of diagonals.
4. Read the plain text written in Step 1 as a sequence of rows.























19 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


Sample Output:



























Result:

Thus the Java program to implement substitution and transposition techniques using rail fence
algorithm was executed successfully.
Outcome:
Thus the outcome of rail fence has been attained.

Application:

Communicating the messages in between the users with privacy.

20 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00



1. What is public-key cryptography?
2. What is block cipher?
3. What is stream cipher?
4. Name a most widely used stream cipher.
5. What are the differences among encoding, encryption and hashing?
6. What are Brute Force Attacks?
7. What is the length of key in playfair cipher?
8. What is the length of matrix in playfair cipher?
9. What is the length of key in hill cipher?
10. What is the length of key in caesar cipher?
11. What is the length of key in monoalphabetic cipher?
12. What is the length of key in one time pad cipher?
13. What is the length of key in polyalphabetic cipher?
14. What is the length of key in railfence cipher?


















Viva-voce


21 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(a)

IMPLEMENTATION OF DES


Aim:
To write a program to implement DES algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:
1. Firstly, we need to process the key.
2. Get a 64-bit key from the user. (Every 8th bit is considered a parity bit. For a key to have correct parity,
each byte should contain an odd number of "1" bits.).
3. Calculate the key schedule.
4. Perform the following permutation on the 64-bit key.
5. Split the permuted key into two halves. The first 28 bits are called C[0] and the last 28 bits are called
D[0].
6. Calculate the 16 subkeys. Start with i = 1. Perform one or two circular left shifts on both C[i-1] and D[i-1]
to get C[i] and D[i], respectively. The number of shifts per iteration are given below:
Iteration # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Left Shifts 1 1 2 2 2 2 2 2 1 2 2 2 2 2 2 1
7. Permute the concatenation C[i]D[i] as indicated below. This will yield K[i], which is 48 bits long.
Permuted Choice 2 (PC-2).
8. Loop back to 1.2.3.1 until K[16] has been calculated. Process a 64-bit data block.
9. Get a 64-bit data block. If the block is shorter than 64 bits, it should be padded as appropriate for the
application.
10. Perform the following permutation on the data block called Initial Permutation (IP).





22 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Input.txt
JavaCode
encrypted.txt
?w~Z5??&??E
decrypted.txt
JavaCode




























Result:
Thus the Java program to implement cryptographic algorithm using DES algorithm was executed
successfully
Outcome:
Thus the outcome of DES has been attained.

Application:

Developing any private application with high security.



23 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(b)

IMPLEMENTATION OF RSA ALGORITHM

Aim:

To write a program to implement RSA algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Generate two large random primes, P and Q, of approximately equal size.
2. Compute N = P ?Q.
3. Compute Z = (P-1) ?(Q-1).
4. Choose an integer E, 1 < E < Z, such that GCD (E, Z) = 1.
5. Compute the secret exponent D, 1 < D < Z, such that E ?D ? 1 (mod Z).
6. The public key is (N, E) and the private key is (N, D).

An example of RSA encryption :

1. Select primes P=11, Q=3
2. N = P ?Q = 11 ?3 = 33
Z = (P-1) ? (Q-1) = 10 ?2 = 20
3. Lets choose E=3
Check GCD(E, P-1) = GCD(3, 10) = 1 (i.e. 3 and 10 have no common factors except 1),
and check GCD(E, Q-1) = GCD(3, 2) = 1, therefore GCD(E, Z) = GCD(3, 20) = 1
4. Compute D such that E x D ? 1 (mod Z)
Compute D = E
^-1
mod Z = 3
^-1
mod 20
Find a value for D such that Z divides ((E x D)-1)
Find D such that 20 divides 3D-1
Simple testing (D = 1, 2, ...) gives D = 7
Check: (E ?D)-1 = 3.7 - 1 = 20, which is divisible by Z
5. Public key = (N, E) = (33, 3) and Private key = (N, D) = (33, 7)

Now say we want to encrypt the message m = 7,
Cipher code = M
^E
mod N
= 7
^3
mod 33
= 343 mod 33
= 13
Hence the ciphertext c = 13

24 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00


To check decryption we compute Message? = C
^D
mod N
= 13
^7
mod 33
= 7


































25 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:
Enter a Prime number: 5
Enter another prime number: 11
Encryption keys are: 33, 55
Decryption keys are: 17, 55






























Result:

Thus the Java program to implement cryptographic algorithm using RSA algorithm was executed
successfully

Outcome:
Thus the outcome of RSA algorithm has been attained.

Application:

It?s a public key cryptography used in banking application.



26 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(c)

IMPLEMENTATION OF DIFFIEE-HELLMAN

Aim:
To write a program to implement Diffiee- hellman key exchange algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Diffiee-Hellman key exchange (DH) is a cryptographic protocol that allows two parties that have no
prior knowledge of each other to jointly establish a shared secret key.
2. The algorithm generates a public key and a private key for the client.
3. Create a KeyPairGenerator Object that generates private/public keys for the DH algorithm, using the
getInstance(String algortihm) API method.
4. Initialize the KeyGenerator so as to generate keys with a 1024-bit length, using the initialize(int
keysize) API method.
5. Create a KeyPair Object , with the genKeyPair() API method, that generates the key pair.
6. Create the PrivateKey and PublicKey Objects of the key pair, with the getPrivate() and getPublic() API
methods of the KeyPair.
7. Return for both keys the names of their primary encoded formats, using for both their getformat() ?PI
methods.



















27 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Sample Output:

Private key format :PKCS#8 Diffie-Helman Private key parameters are:SunJCE Diffie-Hellman Private
Key:
x: a391eed7 d10d95d3 3952005c 117c56ad a3d686c5 8a60d504 2fde2db6 11686543 0025c0b7
e038f63f cb82151b a7cb24fb f6c2ab69 9c517155 67818cec 782cf977
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf f6cb9b55 f26660b7 6b9950a5 a49f9fe8 c24fbba9 d7feb7c6 1bf83b57 e7c6a8a6
150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267
5159578e bad4594f e6710710 8180b449 167123e8 4c281613 b7cf0932 8cc8a6e1
3c167a8b 547c8d28 e0a3ae1e 2bb3a675 916ea37f 0bfa2135 62f1fb62 7a01243b
cca4f1be a8519089 a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512
Public key format :X.509 Diffie-Helman Public key parameters are:SunJCE Diffie-Hellman Public Key:
y: d3fabd76 139865f1 63507aa2 6a9480a9 ba0e6979 f335ee25 2e26762c f7df3af9 d7ea612e
7540f071 f50051ae 7d061113 d0cc4ae1 03406d44 59a93dcd 6ec827d1 06edb2f0 02d48ee5 f2c9cb94
785f39df cc88ec65 5a224a1c 318b51fe 9c40445b fedb5f14 3fe83f51 82d0357c 1004652e 93c9ad81
p: fd7f5381 1d751229 52df4a9c 2eece4e7 f611b752 3cef4400 c31e3f80 b6512669 455d4022
51fb593d 8d58fabf c5f5ba30 f6cb9b55 6cd7813b a49f9fe8 047b1022 c24fbba9 d7feb7c6 1bf83b57
e7c6a8a6 150f04fb 83f6d3c5 1ec30235 54135a16 9132f675 f3ae2b61 d72aeff2 2203199d d14801c7
g: f7e1a085 d69b3dde cbbcab5c 36b857b9 7994afbb fa3aea82 f9574c0b 3d078267 5159578e
bad4594f e6710710 8180b449 167123e8 b7cf0932 8cc8a6e1 c167a8b 547c8d28 e0a3ae1e 2bb3a675
916ea37f 0bfa2135 62f1fb62 ca4f1be a883dfe1 5ae59f06 928b665e 807b5525 64014c3b fecf492a
l: 512

Result:

Thus the program to implement cryptographic algorithm using diffiee-hellman algorithm was executed
successfully.

Outcome:
Thus the outcome of diffiee-hellman has been attained.

Application:

Communicating the message in between two parties.



28 Format No.:FirstRanker/Stud/LM/34/Issue:00/Revision:00

Expt. No. 2(d)

IMPLEMENTATION OF MD5

Aim:
To write a program to implement MD5 algorithm

Software requirements:
C / C++ / Java or equivalent compiler.
Hardware requirements:
Dual core processor, DDR2 1GB RAM, 250 GB HDD.

Algorithm:

1. Append padded bits - The message is padded so that its length is congruent to 448, modulo 512.
Means extended to just 64 bits shy of being of 512 bits long. ? A single ?1? bit is appended to the
message, and then ?0? bits are appended so that the length in bits equals 448 modulo 512.
2. Append length - A 64 bit representation of b is appended to the result of the previous step. The
resulting message has a length that is an exact multiple of 512 bits.
3. Initialize MD Buffer - A four-word buffer (A,B,C,D) is used to compute the message digest. ? Here
each of A,B,C,