Information Theory for Cyber Security — Winter 2025

Define provable security.

Explain Uncertainty/Entropy information measures.

Explain Shannon’s general secrecy system with block diagram. Q .2 (a ) Define Quantum Cryptography.

Explain concept of quantification of leakage and partition.

Write a short note on differential privacy.

Explain side channel attack in detail.

Explain unconditional security.

Mention various masking techniques and write short description of each.

List out various codes and discuss them in detail.

Explain light-weight cryptography in IOT context.

Draw a figure of Diffie-Hellman key exchange mechanism and explain each step.

Explain Shamir’s secret sharing algorithm with example.

Define secret sharing and its importance in network security.

Explain probability distribution in detail.

Briefly explain rate-distortion theory for secrecy systems.

What is Randomized Ciphers? Mention its applications and challenges.

Differentiate between uncertainty and risk for a probability distribution.

Explain Elliptic Curve Cryptography and its applications.

What is semantic security?

Differentiate between parity check code and cyclic code.

Discuss key concept, types, techniques and applications of Distributed channel synthesis.

Define network forensics.

Draw a diagram of encryption and decryption process in AES.

Write a short note on Public Key Infrastructure.