Lecture Notes || SNS Courseware

Subject Details

Dept : IT

Sem : 6

Regul : 2019

Faculty : Ms Padmapriya R

phone : NIL

E-mail : padmapirya.r.it@snsct.org

255

Page views

Files

Videos

R.Links

Lecture Notes

UNIT 1:

Computer Security Concepts

The OSI Security Architecture

Symmetric Cipher Model

Substitution Techniques - Transposition Techniques

Security Attacks - A Model for Network Security

Symmetric Cipher Model

Multiple Encryption and Triple DES

Stream Ciphers - RC4

UNIT 2:

Principles of Pseudorandom Number Generation

The Euclidean Algorithm - Modular Arithmetic

The Chinese Remainder Theorem - Principles of Public Key Cryptosystem

The RSA Algorithm

Diffie Hellman Key Exchange

Implementation of Euclidean Algorithm

ElGamal Cryptosystem

UNIT 3:

Cryptographic Hash Functions

Two Simple Hash Functions Requirements and Security

Hash Functions Based on Cipher Block Chaining

Secure Hash Algorithm (SHA) - Message Authentication Codes

Message Authentication Requirements - Message Authentication Code

Security of MACs - MACs Based on Hash Functions (HMAC)

Digital Signatures - ElGamal Digital Signature Scheme

Lecture Notes