Wednesday, February 8, 2023

Dr. A.P.J. Abdul Kalam University MTECH II SEM (CSE) Information Theory Coding and Cryptography [MTCSE202] June 2021 Question Paper

Dr. A.P.J. Abdul Kalam University

Master of Technology

Second Semester Examination, June-2021

Information Theory Coding and Cryptography [MTCSE202]

Time: 3:00 Hrs Max Marks 70

Note: (i) Attempt any five questions out of eight.

 (ii) Each question carries equal marks.

 (iii) Assume suitable data if necessary and state them clearly.

Q.1 What are the stages in each round of advanced encryption standard (AES)


Q.2 Discuss in brief about Shannonfano coding and Lempel Ziv algorithm.

Q.3 What is the difference between SSL connection and SSL session?

Q.4 In a finite Markov chain, show that not all states are transient or null


Q.5 The cipher text UCR was encrypted using the affine function 9x + 2 mod 26.

Find the plaintext.

Q.6 What are the stages in each round of Advanced Encryption standard (AES)


Q.7 List the requirement for database security.

Q.8 Encrypt the message "how are you" using the affine function '5x+7 (mod

26). What is the decryption function?

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