Cryptography and Network Security

The book contains: Concepts of Security: The need for security Security Approaches Principles of Security Types of Attacks. Cryptographic Techniques: Plain Text and Cipher Text Substitution Techniques Transposition Techniques Encryption and Decryption Symmetric and Asymmetric Key Cryptography Steganography Key Range and Key Size Possible Types of Attacks. Computer-based Symmetric Key Cryptographic Algorithms: Algorithm Types and Modes An overview of Symmetric Key Cryptography DES International Data Encryption Algorithm (IDEA) RC5 Blowfish AES Differential and Linear Cryptanalysis. Computer-based Asymmetric Key Cryptography: Brief History of Asymmetric Key Cryptography An overview of Asymmetric Key Cryptography The RSA Algorithm Symmetric and Asymmetric Key Cryptography Together Digital Signatures Knapsack Algorithm Some other Algorithms.