Cryptography And Network Security: Principles and Practices

This Book is an excerpt from a cryptography and network security textbook. It covers various security mechanisms, including encryption algorithms (symmetric and asymmetric), hashing functions, and digital signatures. The book also explains network security tools and applications like firewalls, Kerberos, and IPsec. Further, it discusses system security issues such as intrusion detection and virus protection. Finally, the excerpt highlights key management and the mathematical foundations of cryptography.

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