**CS6701 Cryptography and Network Security Important Topics**

**Affiliated Colleges **

**CS6701 Cryptography and Network Security**

**Important Topics**

**UNIT I INTRODUCTION & NUMBER THEORY**

OSI security architecture

Euclid‟s algorithm

The Chinese remainder theorem

**UNIT II BLOCK CIPHERS & PUBLIC KEY CRYPTOGRAPHY**

Advanced Encryption Standard (AES)

Public key cryptography

Elliptic curve arithmetic and cryptography.

**UNIT III HASH FUNCTIONS AND DIGITAL SIGNATURES**

Authentication requirement and function

Digital signature and authentication protocols

**UNIT IV SECURITY PRACTICE & SYSTEM SECURITY**

Types and Designs of Firewalls

Intrusion detection system

Practical implementation of cryptography and security

**UNIT V E-MAIL, IP & WEB SECURITY**

E-mail Security establishing keys privacy

IP Security Encapsulation Security Payload (ESP)

Encoding-Secure Electronic Transaction (SET)