Cryptography & Network Security

A comprehensive and practical survey of cryptography and network security, this edition blends foundational concepts with real-world techniques. The first part introduces cryptographic principles and technologies, including classical encryption, block and stream ciphers, hash functions, public-key systems (e.g. RSA), and finite field math. The second part focuses on applied network security—covering TLS/SSL, IP security, wireless network protection, email security, authentication, key management, and one-way hash applications. This edition has been refined for clarity with updated illustrations, tightened narrative, and new or reorganized sections on topics like attack surfaces, email security, cloud security, and modern authentication protocols.