IT Security and Audit — Summer 2025

Explain cryptanalytic attacks with example of any encryption algorithm.

Distinguish between Symmetric encryption and Asymmetric encryption using suitable example.

Explain the VERNAM Cipher method.

Explain data confidentiality, data authentication and data Integrity.

Explain the difference between diffusion and confusion.

Explain how DES (Data Encryption standard) algorithm observes Fiestel structure. Explain single round in detail.

Explain playfair cipher with example.

Explain the process of key generation in DES.

List out the various web security threats.

Explain Cipher Feedback (CFB) and Output Feedback mode (OFB) block cipher modes of operation with the help of diagram

Differentiate between hashing and encryption.

Elaborate AES encryption with neat sketches.

Explain Hash functions based on Cipher Block Chaining

What is Security audit?what is the need of security audits??

Explain triple DES with two keys.

Write a detailed note on SSL architecture and protocol.

How does secure socket layer protocol work?

Explain Intrusion Detection Systems.

Explain Types of Security Audits.

Discuss HASH function and its application in Crypto System.

Explain the following properties of hash function

One way property (ii) Weak collision resistance

Discuss Diffie-Hillman key exchange algorithm in detail.

Discuss Man-in-the-Middle Attack

Discuss Secure Hash Algorithm (SHA)

Explain RSA algorithm in detail with suitable example. -------1