Download JNTUK M-Tech 2020 R19 IT Principles Of Cryptography Model Question Paper

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I M. Tech I Semester (R19) Regular Examinations

[M19 IT 1109]

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PRINCIPLES OF CRYPTOGRAPHY

Department of Information Technology

MODEL QUESTION PAPER

TIME: 3 Hrs. Max. Marks: 75

Answer ONE Question from EACH UNIT

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All questions carry equal marks

UNIT - I

1. a). Identify the classical cryptosystems and its types (1, 3)
   b). Compare Euler's and Chinese Remainder theorem (1, 4)

OR

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2. a). Distinguish single round of DES Algorithm and key discarding process of DES (2, 4)
   b). Analyze Cauchy's theorem with example (2, 4)

UNIT - II

1. a). Distinguish max-flow min-cut theorem (2, 4)
   b). Apply encryption and decryption for RSA algorithm parameters : p=3, q=11, e=7, d=?, M=5. (2, 3)

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OR

2. a). Identify different types of attacks (1, 3)
   b). Compare SSL and SET protocols (2, 4)

UNIT - III

1. a). Distinguish Diffie Hellman key Exchange algorithm with merits and demerits (2, 4)
   

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   b). Classify Modes of operation in Block cipher (2, 4)

OR

2. a). Identify different modes of operations in DES (2, 3)
   b). Identify different Phases, types of virus structure and types of viruses (1, 3)

UNIT - IV

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1. a). Classify types of block cipher design (2, 4)
   b). Analyze the key generation in AES algorithm and its expansion format (3, 4)

OR

2. a). List the properties of hash function in cryptography (3, 4)
   b). Analyze digital signature with ElGamal public key cryptosystem (3, 4)

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UNIT - V

1. a). Distinguish secure hash Algorithm (SHA) (3, 4)
   b). Compare any two classical crypto systems with suitable examples (1, 4)

OR

2. a). Classify RSA digital signature (3, 4)
   

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   b). Compare stream cipher with RC4 (3, 4)

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