CS8792 CNS Notes

Anna University Regulation 2017 CSC CS8792 CNS Notes, CRYPTOGRAPHY AND NETWORK SECURITY Lecture Handwritten Notes for all 5 units are provided below. Download link for CSC 7th Sem CRYPTOGRAPHY AND NETWORK SECURITY Notes are listed down for students to make perfect utilization and score maximum marks with our study materials.

CS8792 CNS CRYPTOGRAPHY AND NETWORK SECURITY

OBJECTIVES:
 To understand Cryptography Theories, Algorithms and Systems.
 To understand necessary Approaches and Techniques to build protection
mechanisms in order to secure computer networks.
INTRODUCTION
Security trends – Legal, Ethical and Professional Aspects of Security, Need for Security at Multiple levels, Security Policies – Model of network security – Security attacks, services and mechanisms – OSI security architecture – Classical encryption techniques: substitution techniques, transposition techniques, steganography- Foundations of modern cryptography: perfect security – information theory – product cryptosystem – cryptanalysis.

SYMMETRIC KEY CRYPTOGRAPHY
MATHEMATICS OF SYMMETRIC KEY CRYPTOGRAPHY: Algebraic structures – Modular arithmetic-Euclid‟s algorithm- Congruence and matrices -Groups, Rings, Fields- Finite fields- SYMMETRIC KEY CIPHERS: SDES – Block cipher Principles of DES – Strength of DES – Differential and linear cryptanalysis – Block cipher design principles – Block cipher mode of operation – Evaluation criteria for AES – Advanced Encryption Standard – RC4 –
Key distribution.
PUBLIC KEY CRYPTOGRAPHY
MATHEMATICS OF ASYMMETRIC KEY CRYPTOGRAPHY: Primes – Primality Testing –Factorization – Euler‘s totient function, Fermat‘s and Euler‘s Theorem – Chinese Remainder Theorem – Exponentiation and logarithm – ASYMMETRIC KEY CIPHERS: RSA cryptosystem – Key distribution – Key management – Diffie Hellman key exchange -ElGamal cryptosystem – Elliptic curve arithmetic-Elliptic curve cryptography.
MESSAGE AUTHENTICATION AND INTEGRITY
Authentication requirement – Authentication function – MAC – Hash function – Security of
hash function and MAC – SHA –Digital signature and authentication protocols – DSS- Entity
Authentication: Biometrics, Passwords, Challenge Response protocols- Authentication
applications – Kerberos,

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CS8792 CNS Notes

Anna University 7th Sem CSC CNS Lecture Handwritten Notes