This fully updated text from the celebrated author, William Stallings reflects the latest trends and technologies in Cryptography and Network Security. It is a definitive guide to the principles and techniques of cryptography and network security, as well as their effective usage. The book is organized into four parts. Part One: Symmetric Ciphers examines conventional encryption algorithms and design principles including a discussion on the use of conventional encryption for confidentiality. Part Two: Public-Key Encryption and Hash Functions covers public-key encryption algorithms and design principles. This part also analyzes the use of message authentication codes and hash functions, as well as digital signatures and public-key certificates. Part Three: Network Security Applications describes important network security tools and applications, including Kerberos, X.509v3 certificates, PGP, S/MIME, IP Security, SSL/TLS and SET. Finally, Part Four: System Security focusses on system level security issues, including the threat of and countermeasures for intruders and viruses, and the use of firewalls and trusted systems. This comprehensive and student friendly text is illustrated with a large number of diagrams and tables. These along with end of chapter problems, review questions, lab exercises and assignments, a comprehensive glossary, a list of frequently used acronyms, a bibliography, and recommended Web sites, enhance its value as a text. Primarily intended as a textbook for undergraduate students of computer science and electrical engineering offering courses in cryptography and network security, the text also serves as a basic reference for professionals in these areas.

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