在全球实现了电子化连接，充满病毒、黑客、电子窃听、电子欺诈的年代，安全是一个极其重要的主题。本书针对密码编码学和网络安全，从原理和实践两方面提供了实用的知识。

本书适合用作密码编码学、计算机安全、网络安全专业的本科生或研究生一学期课程的教材。在讲解密码编码学和网络安全的实用知识时，本书还为教师和学生提供了大量的支持材料。

本书系统介绍了密码编码学与网络安全的基本原理和应用技术。全书主要包括五个部分：对称密码部分讲解传统加密技术、高级加密标准等；非对称密码部分讲解数论、公钥加密、RSA；第三部分讨论了加密哈希函数、消息认证、数字签名等主题；第四部分分析了密钥管理、用户认证协议；网络与Internet安全部分探讨的是传输层安全、无线网络安全、电子邮件安全及IP安全的问题。最后，两个附录给出了各章的项目练习和一些例子。配套网站包含大量的延伸性内容。

本书可作为高校计算机专业、网络安全专业、通信安全专业等相关专业的本科生和研究生的教材，也可供相关技术人员参考使用。

Notation

Preface

About the Author

Chapter 0 Reader s Guide

Chapter 1 Overview

PART ONE SYMMETRIC CIPHERS

Chapter 2 Classical Encryption Techniques

Chapter 3 Block Ciphers and the Data Encryption Standard

Chapter 4 Basic Concepts in Number Theory and Finite Fields

Chapter 5 Advanced Encryption Standard

Chapter 6 Block Cipher Operation

Chapter 7 Pseudorandom Number Generation and Stream Ciphers

PART TWO ASYMMETRIC CIPHERS

Chapter 8 More Number Theory

Chapter 9 Public-Key Cryptography and RSA

Chapter 10 Other Public-Key Cryptosystems

PART THREE CRYPTOGRAPHIC DATA INTEGRITY ALGORITHMS

Chapter 11 Cryptographic Hash Functions

Chapter 12 Message Authentication Codes

Chapter 13 Digital Signatures

PART FOUR MUTUAL TRUST

Chapter 14 Key Management and Distribution

Chapter 15 User Authentication Protocols

PART FIVE NETWORK AND INTERNET SECURITY

Chapter 16 Transport-Level Security

Chapter 17 Wireless Network Security

Chapter 18 Electronic Mail Security

Chapter 19 IP Security

APPENDICES

References

Index

ONLINE CHAPTERS

PART SIX SYSTEM SECURITY

Chapter 20 Intruders

Chapter 21 Malicious Software

Chapter 22 Firewalls

PART SEVEN LEGAL AND ETHICAL ISSUES

Chapter 23 Legal and Ethical Issues

ONLINE APPENDICES

WilliamStallings.com/Crypto/Crypto5e.html

Appendix C Sage Problems

Appendix D Standards and Standards-Setting Organizations

Appendix E Basic Concepts from Linear Algebra

Appendix F Measures of Security and Secrecy

Appendix G Simplified DES

Appendix H Evaluation Criteria for AES

Appendix I More on Simplified AES

Appendix J Knapsack Public-Key Algorithm

Appendix K Proof of the Digital Signature Algorithm

Appendix L TCP/IP and OSI

Appendix M Java Cryptographic APIs

Appendix N The Whirlpool Hash Function

Appendix O Data Compression Using ZIP

Appendix P PGP Random Number Generation

Appendix Q International Reference Alphabet

Glossary