Note for Cryptography And Network Security - CNS by Abhimanyu Dash

Cryptology, Basic Terminology, Attack, Services, Specific Security Mechanism, Model of Network Security, Classical Encryption Techniques, Language Redundancy & Cryptanalysis, Poly-alphabetic Caiaphas, Steganography, Rings, Euclid's Algorithm, Finite Field, Number Theory, Primality Testing,

Data Encryption Standard, Cipher Feedback, Counter, Multiple Encryption & Decryption,Blowfish, Public Key Cryptography, Principles of Public Key Cryptography, Security of Public Key Scheme, Key Management, Distribution of Public Key, Public Key Certificate

Authentication Requirement, Authentication Function, MAC, Hash Function, Security of Hash Function, MD5, Secure Hash Algorithm, HMAC, CMAC, Digital Signal and Authentication Protocol

Authentication Applications, Kerberos, Internet Firewall for Trusted System, Roles of Firewall, Types of Firewall, Firewall Design, Set of E-commerce Transaction, Intrusion Detection System, Virus and Related Threats, Countermeasures, Trusted System

Email Security, Establishing Keys Privacy, Authentication of Source, Message Integrity, Pretty and Privacy, Autentication Header, Encapsulation Security Payload, Internet Key Exchange, Web Security, Computing the Key, Client Authentication