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内容简介
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、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。，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。
目录
Notation xiii
Preface xv
about the Author xxiii
Chapter 0 Reader s Guide 1
0.1 Outline of This Book 2
0.2 A Roadmap for Readers and Instructors 2
0.3 Internet and Web Resources 4
0.4 Standards 5
Chapter 1 Overview 7
1.1 Computer Security Concepts 9
1.2 The OSI Security Architecture 14
1.3 Security Attacks 15
1.4 Security Services 19
1.5 Security Mechanisms 23
1.6 A Model for Network Security 25
1.7 Recommended Reading and Web Sites 27
1.8 Key Terms，Review Questions，and Problems 29
PART ONE SYMMETRIC CIPHERS 31
Chapter 2 Classical Encryption Techniques 31
2.1 Symmetric Cipher Model 33
2.2 Substitution Techniques 38
2.3 Transposition Techniques 53
2.4 Rotor Machines 55
2.5 Steganography 57
2.6 Recommended Reading and Web Sites 59
2.7 Key Terms，Review Questions，and Problems 60
Chapter 3 Block Ciphers and the Data Encryption Standard 66
3.1 Block Cipher Principles 68
3.2 The Data Encryption Standard (DES) 77
3.3 A DES Example 85
3.4 The Strength of DES 88
3.5 Differential and Linear Cryptanalysis 89
3.6 Block Cipher Design Principles 92
3.7 Recommended Reading and Web Site 96
3.8 Key Terms，Review Questions，and Problems 97
Chapter 4 Basic Concepts in Number Theory and Finite Fields 101
4.1 Divisibility and the Division Algorithm 103
4.2 The Euclidean Algorithm 105
4.3 Modular Arithmetic 108
4.4 Groups，Rings，and Fields 116
4.5 Finite Fields of the Form GF(p) 120
4.6 Polynomial Arithmetic 122
4.7 Finite Fields of the Form GF(2n) 129
4.8 Recommended Reading and Web Sites 141
4.9 Key Terms，Review Questions，and Problems 141
Appendix 4A The Meaning of mod 144
Chapter 5 Advanced Encryption Standard 47
5.1 The Origins AES 148
5.2 AES Structure 150
5.3 AES Round Functions 155
5.4 AES Key Expansion 166
5.5 An AES Example 169
5.6 AES Implementation 174
5.7 Recommended Reading and Web Sites 178
5.8 Key Terms，Review Questions，and Problems 179
Appendix 5A Polynomials with Coefficients in GF(28) 180
Appendix 5B Simplified AES 183
Chapter 6 Block Cipher Operation 192
6.1 Multiple Encryption and Triple DES 193
6.2 Electronic Codebook Mode 198
6.3 Cipher Block Chaining Mode 201
6.4 Cipher Feedback Mode 203
6.5 Output Feedback Mode 205
6.6 Counter Mode 206
6.7 XTS Mode for Block-Oriented Storage Devices 210
6.8 Recommended Web Site 214
6.9 Key Terms，Review Questions，and Problems 214
Chapter 7 Pseudorandom Number Generation and Stream Ciphers 218
7.1 Principles of Pseudorandom Number Generation 219
7.2 Pseudorandom Number Generators 226
7.3 Pseudorandom Number Generation Using a Block Cipher 229
7.4 Stream Ciphers 232
7.5 RC4 234
7.6 True Random Numbers 237
7.7 Recommended Reading 238
7.8 Key Terms，Review Questions，and Problems 239
PART TWO ASYMMETRIC CIPHERS 243
Chapter 8 More N