Network Security _ Cryptography

OBJECTIVES:

• In this course the following principles and practice of cryptography and network security are covered:

• Classical systems, symmetric block ciphers (DES, AES, other contemporary symmetric ciphers)

• Public-key cryptography (RSA, discrete logarithms),

• Algorithms for factoring and discrete logarithms, cryptographic protocols,hash functions, authentication, key management, key exchange, signature schemes,

• Email and web security, viruses, firewalls, digital right management, and other topics.

UNIT- I:

Basic Principles, Security Goals, Cryptographic Attacks, Services and Mechanisms, Mathematics of Cryptography.

UNIT- II:

Symmetric Encryption, Mathematics of Symmetric Key Cryptography, Introduction to Modern Symmetric Key Ciphers, Data Encryption Standard, Advanced Encryption Standard.

UNIT- III:

Asymmetric Encryption, Mathematics of Asymmetric Key Cryptography, Asymmetric Key Cryptography

UNIT- IV:

Data Integrity, Digital Signature Schemes & Key Management Message Integrity and Message Authentication, Cryptographic Hash Functions, Digital Signature, Key Management.

UNIT -V:

Network Security-I Security at application layer: PGP and S/MIME, Security at the Transport Layer: SSL and TLS

UNIT -VI:

Network Security-II Security at the Network Layer: IPSec, System Security

OUTCOMES:

• To be familiarity with information security awareness and a clear understanding of its importance.

• To master fundamentals of secret and public cryptography

• To master protocols for security services

• To be familiar with network security threats and countermeasures

• To be familiar with network security designs using available secure solutions (such asPGP,

• SSL, IPSec, etc)