CNS SYLLABUS
UNIT I:
Basic Principles: Security Goals, Cryptographic Attacks, Services and Mechanisms, Mathematics of
Cryptography- integer arithmetic, modular arithmetic, matrices, linear conguence.
UNIT II:
Symmetric Encryption: Mathematics of Symmetric Key Cryptography-algebraic structures, GF(2n) Fields,
Introduction to Modern Symmetric Key Ciphers-modern block ciphers, modern stream ciphers, Data
Encryption Standard- DES structure, DES analysis, Security of DES, Multiple DES, Advanced Encryption
Standard-transformations, key expansions, AES ciphers, Analysis of AES.
UNIT III:
Asymmetric Encryption: Mathematics of Asymmetric Key Cryptography-primes, primality testing,
factorization, CRT, Asymmetric Key Cryptography- RSA crypto system, Rabin cryptosystem, Elgamal
Crypto system, ECC
UNIT IV:
Data Integrity, Digital Signature Schemes & Key Management: Message Integrity and Message
Authentication-message integrity, Random Oracle model, Message authentication, Cryptographic Hash
Functions-whirlpool, SHA-512, Digital Signature- process, services, attacks, schemes, applications, Key
Management-symmetric key distribution, Kerberos.
UNIT V:
Network Security-I: Security at application layer: PGP and S/MIME, Security at the Transport Layer: SSL
and TLS, Network Security-II: Security at the Network Layer: IPSec-two modes, two security protocols,
security association, IKE, ISAKMP, System Security-users, trust, trusted systems, buffer overflow, malicious
software, worms, viruses, IDS, Firewalls.
Textbooks:
1. Cryptography and Network Security, 3rd Edition Behrouz AForouzan, Deb deep Mukhopadhyay,
McGraw Hill,2015
2. Cryptography and Network Security,4th Edition, William Stallings, (6e) Pearson,2006
3. Everyday Cryptography, 1st Edition, Keith M.Martin, Oxford,2016
CHATGPT LINKS
CNS UNIT-1
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