Name of Subject  : INFORMATION SYSTEM AND SECURITIES (8 CS 1)

Unit

Contents

Introduction to security attacks, services and mechanism, introduction to cryptography.

Conventional Encryption: Conventional encryption model, classical encryption techniques- substitution ciphers and

transposition ciphers, cryptanalysis, stereography, stream and block ciphers.

Modern Block Ciphers: Block ciphers principals, Shannon’s theory of confusion and diffusion, fiestal structure, data

I

encryption standard(DES), strength of DES, differential and linear crypt analysis of DES, block cipher modes of

operations, triple DES, IDEA encryption and decryption, strength of IDEA, confidentiality using conventional

encryption, traffic confidentiality, key distribution, random number generation.

Introduction to graph, ring and field, prime and relative prime numbers, modular arithmetic, Fermat’s and Euler’s

theorem, primality testing, Euclid’s Algorithm, Chinese Remainder theorem, discrete logarithms.

II

Principals of public key crypto systems, RSA algorithm, security of RSA, key management, Diffle-Hellman key

exchange algorithm, introductory idea of Elliptic curve cryptography, Elganel encryption.

Message Authentication and Hash Function: Authentication requirements, authentication functions, message

authentication code, hash functions, birthday attacks, security of hash functions and MACS, MD5 message digest

algorithm, Secure hash algorithm(SHA).

III

Digital Signatures: Digital Signatures, authentication protocols, digital signature standards (DSS), proof of digital

signature algorithm.

Authentication Applications: Kerberos and X.509, directory authentication service, electronic mail security-pretty

IV

good privacy (PGP), S/MIME.

IP Security: Architecture, Authentication header, Encapsulating security payloads, combining security associations,

key management.

V

Web Security: Secure socket layer and transport layer security, secure electronic transaction (SET).