Section outline

  • Cryptography and Network Security: Introduction – Goals of Security – Attacks - Services and Techniques. Basics of Cryptography: Plain Text - Cipher Text – Encryption – Decryption. Confidentiality: Basics of Symmetric Key Ciphers - Traditional Symmetric Key Ciphers: Substitution, Transposition, Stream & Lock, Modern – Components of Modern Block Cipher – DES - Modern Stream Cipher. Basics of Asymmetric Key Ciphers – RSA Cryptosystem. Integrity: Message – Message Digest – Hash Function. Authentication: MAC. Digital Signature : Analogy with Manual Signature – Process – Signing the Digest – Services – RSA Digital Signature Scheme.

    Textbook:

    1. Behurouz A Forozan, Introduction to Data Communications & Networking, TMH References:

    1. Andrew S. Tanenbaum, Computer Networks, PHI

    2. William Stallings, Data and Computer Communications, VIIth Edition, Pearson Education

    3. William Stallings, Cryptography and Network Security, Principles and Practices, Prentice

      Hall of India.

    4. Steven Graham and Steve Shah, Linux Administration: A Beginners Guide, Third Edition,

      Dreamtech,2003.