Introduction to cryptography, Security threats , Vulnerability ,Active and Passive ,Security service and Mechanism, Conventional Encryption , CIA Model , Modular Athematic ,Euclidean and extended Euclidean algorithm , Prime numbers ,Fermat's and Euler's Theorem.

Dimensions of cryptographic , Classical cryptographic Techniques, Fiestal Cipher structure, Simplifies DES ,DES , Double and Triple DES , Block Cipher design Principles , AES Modes of operations.

Principles of Public key cryptography, RSA Algorithm, Key Management, Diffie-Hellman Key Exchange ,Elgamal Algorithm ,Elliptic Curve cryptography

Authentication requirement, Functions , Message Authentication code, Hash Functions, Security of Hash functions and Macs,MD5 Message digest algorithm, Secure hash algorithm , Digital Signatures , Key Distribution Techniques, Kerberos

Threats in Networks, Network security controls -Architecture, Encryption , Content Integrity, Strong Authentication,Acess Controls ,Wireless Security ,Honeypots, Traffic flow security , Firewalls-Design and type of Firewalls,Personal Firewalls,IDS ,E-Mail Security -PGP, S/MIME.