Cryptography and Network Security

 UNIT- I:

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

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UNIT- II: 

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

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UNIT- III: 

Asymmetric Encryption Mathematics of Asymmetric Key Cryptography, Asymmetric Key Cryptography 

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UNIT- IV: 

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

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 UNIT -V: 

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

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UNIT -VI:

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

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