Information security — Winter 2023

Explain Caesar Cipher technique with Example.

Explain with example any two principles of Security.

Define the following terms related to Information Security: i. Cryptography ii. Cryptanalysis iii. Sniffing iv. Spoofing v. Interception vi. Fabrication vii. Masquerade

Differentiate between Block Cipher and Stream Cipher.

Explain One-Time Pad Substitution technique with the help of example.

Explain in detail single round of DES algorithm.

Explain in detail single round of AES algorithm.

What is meet in the middle attack?

Explain Electronic Code Book and Cipher Block Chaining Mode in detail.

In a Diffie-Hellman Key Exchange, Alice and Bob have chosen prime value q = 17 and primitive root = 5. If Alice’s secret key is 4 and Bob’s secret key is 6, what is the secret key they exchanged? Explain it with proper steps.

Define Hash function in Cryptographic and list its application.

Differentiate between Symmetric key cryptography and Asymmetric key cryptography.

Explain RSA algorithm with example in detail.

What is MAC? State the main difference between MAC & Hash function.

Explain hill cipher algorithm with example.

Explain Message Digest Generation Using SHA-512.

Explain the types of attacks are addressed by message authentication?

What are the requirements for a Cryptographic Hash Function?

Explain with the diagrams Basic Uses of Message Authentication code (MAC).

What is the role of Key Distribution Centre? Give the several techniques for the distribution of public keys.

Give the difference between Session key and Master key.

Explain with neat diagram Digital Signature Algorithm. OR1

What is the role of AS and TGS in Kerberos?

Draw X.509 certificate format.

Explain SSL Architecture with neat diagram.2