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Use of Sage to illustrate cryptographic algorithms.
The Sage computer algebra system is used to provide numerous examples of cryptographic algorithms and is also used as the basis for numerous hands-on assignments. This is an unmatched means for students to learn this subject. See Appendices B and C.
Comprehensive up-to-date survey of cryptographic algorithms.
The student gains an understanding of all of important cryptographic algorithms and is able to assess their relative strengths and weaknesses. See Parts One, Two, and Three.
Complete coverage of authentication and digital signatures.
Enables the student to compare and evaluate competing approaches, and thus understand each better. See Chapters 12 and 13 cover these topics.
Unified, comprehensive treatment of mutual trust topics.
Key management and user authentication are fundamental to the successful use of cryptographic services. This treatment gives the student a systematic and comprehensive understanding of the issues involved. See Part Four.
Excellent collection of homework problems.
Approximately 300 problems reinforce material in the text and also introduce new concepts and techniques. Problems are included at the end of each chapter.
Solid yet easy-to-follow mathematical background.
It is impossible to assess the relative strengths of various approaches without some understanding of number theory and probability. The book requires no prior math background and gives the student a clear understanding of the math required. Chapters 4 and 8 cover number theory and finite fields including numerous worked-out examples to make this abstract subject clear.
Comprehensive, up-to-date coverage of IP Security.
IPSec is one of the most complex and one of the most important of the new network security standards. This book gives a clear and detailed technical treatment. Chapter 19 is devoted to IPSec.
Comprehensive, up-to-date coverage of wireless network Security.
The student gains an understanding of the importance of this topic. Chapter 17 is devoted to this topic.
Coverage of both PGP and S/MIME for electronic mail security.
These are the two most important approaches to email security. The book gives the student an understanding of both schemes at a detailed technical level. Chapter 18 is devoted to PGP and S/MIME.
Unequalled support for projects.
For many instructors, an important component of a course is a project or set of projects by which the student gets hands-on experience to reinforce concepts from the text. The book provides unparalleled support for including a projects component with the course. The Instructor's Manual includes guidance on how to assign and structure the projects and includes a set of suggested projects that covers a broad range of topics from the text. The following types of projects are supported in the Instructor's Manual:
Unequalled support for instructors and students
Comprehensive and unified discussion of intruders and viruses.
The threats of intruders (hackers) and viruses are distinct, but there are also similarities. By treating the two in the same chapter and in a unified way, the student gains greater understanding of both topics. See Chapter 15.
Expanded Homework problems.
The number of problems has been expanded from 239 in the fourth edition to 301 in the fifth edition. In addition, there is a new set of problems plus solutions available to students online.
SUPPLEMENTS
Instructor Resources
The following protected instructor material is available on the Publisher’s Web site at www.pearsonhighered.com/stallings. For username and password information, please contact your Pearson Representative.
Student Resources
Access to the Companion Website and access to the online premium content is located at www.pearsonhighered.com/stallings. Students must use the access card located in the front of the book to register and access the online material. If there is no access card in the front of the textbook, students can purchase access by going to www.pearsonhighered.com/stallings and selecting “purchase access to premium content.” Instructors must register on the site to access the material.
The following content is available through the Companion Web site:
What’s New on the Author Web Site http://williamstallings.com/Crypto/Crypto5e.html
Sage
The open-source Sage computer algebra system, which runs on all platforms, is used as a basis for both examples and student assignments. Sage is a powerful tool for understanding the complex cryptographic algorithms. With it, students will gain a solid grasp of cryptography and master a tool that is useful for all their courses and in their career.
Projects
For many instructors, an important component of a course is a project or set of projects by which the student gets hands-on experience to reinforce concepts from the text. The book provides unparalleled support for instructors including a projects component with the course. The Instructor's Manual includes guidance on how to assign and structure the projects and includes a set of suggested projects that covers a broad range of topics from the text. The following types of projects are supported in the Instructor's Manual:
William Stallings' Cryptography and Network Security: Principles and Practice, 5e is a practical survey of cryptography and network security with unmatched support for instructors and students.
In this age of universal electronic connectivity, viruses and hackers, electronic eavesdropping, and electronic fraud, security is paramount. This text provides a practical survey of both the principles and practice of cryptography and network security. First, the basic issues to be addressed by a network security capability are explored through a tutorial and survey of cryptography and network security technology. Then, the practice of network security is explored via practical applications that have been implemented and are in use today. An unparalleled support package for instructors and students ensures a successful teaching and learning experience.
The new edition has been updated to include coverage of the latest topics including expanded coverage of block cipher modes of operation, including authenticated encryption; revised and expanded coverage of AES; expanded coverage of pseudorandom number generation; new coverage of federated identity, HTTPS, Secure Shell (SSH) and wireless network security; completely rewritten and updated coverage of IPsec; and a new chapter on legal and ethical issues.
NOTATION
PREFACE
Chapter 0 Reader's Guide
0.1 Outline of This Book
0.2 A Roadmap for Readers and Instructors
0.3 Internet and Web Resources
0.4 Standards
Chapter 1 Overview
1.1 Computer Security Concepts
1.2 The OSI Security Architecture
1.3 Security Attacks
1.4 Security Services
1.5 Security Mechanisms
1.6 A Model for Network Security
1.7 Recommended Reading and Web Sites
1.8 Key Terms, Review Questions, and Problems
PART ONE SYMMETRIC CIPHERS
Chapter 2 Classical Encryption Techniques
2.1 Symmetric Cipher Model
2.2 Substitution Techniques
2.3 Transposition Techniques
2.4 Rotor Machines
2.5 Steganography
2.6 Recommended Reading and Web Sites
2.7 Key Terms, Review Questions, and Problems
Chapter 3 Block Ciphers and the Data Encryption Standard
3.1 Block Cipher Principles
3.2 The Data Encryption Standard (DES)
3.3 A DES Example
3.4 The Strength of DES
3.5 Differential and Linear Cryptanalysis
3.6 Block Cipher Design Principles
3.7 Recommended Reading and Web Site
3.8 Key Terms, Review Questions, and Problems
Chapter 4 Basic Concepts in Number Theory and Finite Fields
4.1 Divisibility and the Division Algorithm
4.2 The Euclidean Algorithm
4.3 Modular Arithmetic
4.4 Groups, Rings, and Fields
4.5 Finite Fields of the Form GF(p)
4.6 Polynomial Arithmetic
4.7 Finite Fields of the Form GF(2n)
4.8 Recommended Reading and Web Sites
4.9 Key Terms, Review Questions, and Problems
APPENDIX 4A The Meaning of mod
Chapter 5 Advanced Encryption Standard
5.1 The Origins AES
5.2 AES Structure
5.3 AES Round Functions
5.4 AES Key Expansion
5.5 An AES Example
5.6 AES Implementation
5.7 Recommended Reading and Web Sites
5.8 Key Terms, Review Questions, and Problems
APPENDIX 5A Polynomials with Coefficients in GF(28)
APPENDIX 5B Simplified AES
Chapter 6 Block Cipher Operation
6.1 Multiple Encryption and Triple DES
6.2 Electronic Codebook Mode
6.3 Cipher Block Chaining Mode
6.4 Cipher Feedback Mode
6.5 Output Feedback Mode
6.6 Counter Mode
6.7 XTS Mode for Block-Oriented Storage Devices
6.8 Recommended Web Site
6.9 Key Terms, Review Questions, and Problems
Chapter 7 Pseudorandom Number Generation and Stream Ciphers
7.1 Principles of Pseudorandom Number Generation
7.2 Pseudorandom Number Generators
7.3 Pseudorandom Number Generation Using a Block Cipher
7.4 Stream Ciphers
7.5 RC4
7.6 True Random Numbers
7.7 Recommended Reading
7.8 Key Terms, Review Questions, and Problems
PART TWO ASYMMETRIC CIPHERS
Chapter 8 More Number Theory
8.1 Prime Numbers
8.2 Fermat's and Euler's Theorems
8.3 Testing for Primality
8.4 The Chinese Remainder Theorem
8.5 Discrete Logarithms
8.6 Recommended Reading and Web Sites
8.7 Key Terms, Review Questions, and Problems
Chapter 9 Public-Key Cryptography and RSA
9.1 Principles of Public-Key Cryptosystems
9.2 The RSA Algorithm
9.3 Recommended Reading and Web Sites
9.4 Key Terms, Review Questions, and Problems
Appendix 9A: Proof of the RSA Algorithm
Appendix 9B: The Complexity of Algorithms
Chapter 10 Other Public-Key Cryptosystems
10.1 Diffie-Hellman Key Exchange
10.2 ElGamal Cryptosystem
10.3 Elliptic Curve Arithmetic
10.4 Elliptic Curve Cryptography
10.5 Pseudorandom Number Generation Based on an Asymmetric Cipher
10.6 Recommended Reading and Web Sites
10.7 Key Terms, Review Questions, and Problems
PART THREE CRYPTOGRAPHIC DATA INTEGRITY ALGORITHMS
Chapter 11 Cryptographic Hash Functions
11.1 Applications of Cryptographic Hash Functions
11.2 Two Simple Hash Functions
11.3 Requirements and Security
11.4 Hash Functions Based on Cipher Block Chaining
11.5 Secure Hash Algorithm (SHA)
11.6 SHA-3
11.7 Recommended Reading and Web Sites
11.8 Key Terms, Review Questions, and Problems
Appendix 11A: Mathematical Basis of Birthday Attack
Chapter 12 Message Authentication Codes
12.1 Message Authentication Requirements
12.2 Message Authentication Functions
12.3 Message Authentication Codes
12.4 Security of MACs
12.5 MACs Based on Hash Functions: HMAC
12.6 MACs Based on Block Ciphers: DAA and CMAC
12.7 Authenticated Encryption: CCM and GCM
12.8 Pseudorandom Number Generation using Hash Functions and MACs
12.9 Recommended Reading
12.10 Key Terms, Review Questions, and Problems
Chapter 13 Digital Signatures
13.1 Digital Signatures
13.2 ElGamal Digital Signature Scheme
13.3 Schnorr Digital Signature Scheme
13.4 Digital Signature Standard (DSS)
13.5 Recommended Reading and Web Sites
13.6 Key Terms, Review Questions, and Problems
PART FOUR MUTUAL TRUST
Chapter 14 Key Management and Distribution
14.1 Symmetric Key Distribution Using Symmetric Encryption
14.2 Symmetric Key Distribution Using Asymmetric Encryption
14.3 Distribution of Public Keys
14.4 X.509 Certificates
14.5 Public Key Infrastructure
14.6 Recommended Reading and Web Sites
14.7 Key Terms, Review Questions, and Problems
Chapter 15 User Authentication Protocols
15.1 Remote User Authentication Principles
15.2 Remote User Authentication Using Symmetric Encryption
15.3 Kerberos
15.4 Remote User Authentication Using Asymmetric Encryption
15.5 Federated Identity Management
15.6 Recommended Reading and Web Sites
15.7 Key Terms, Review Questions, and Problems
Appendix 15A: Kerberos Encryption Techniques
PART FIVE NETWORK AND INTERNET SECURITY
Chapter 16 Transport-Level Security
16.1 Web Security Issues
16.2 Secure Sockets Layer (SSL)
16.3 Transport Layer Security (TLS)
16.4 HTTPS
16.5 Secure Shell (SSH)
16.6 Recommended Reading and Web Sites
16.7 Key Terms, Review Questions, and Problems
Chapter 17 Wireless Network Security
17.1 IEEE 802.11 Wireless LAN Overview
17.2 IEEE 802.11i Wireless LAN Security
17.3 Wireless Application Protocol Overview
17.4 Wireless Transport Layer Security
17.5 WAP End-to-End Security
17.6 Recommended Reading and Web Sites
17.7 Key Terms, Review Questions, and Problems
Chapter 18 Electronic Mail Security
18.1 Pretty Good Privacy (PGP)
18.2 S/MIME
18.3 DomainKeys Identified Mail (DKIM)
18.4 Recommended Web Sites
18.5 Key Terms, Review Questions, and Problems
Appendix 18A: Radix-64 Conversion
Chapter 19 IP Security
19.1 IP Security Overview
19.2 IP Security Policy
19.3 Encapsulating Security Payload
19.4 Combining Security Associations
19.5 Internet Key Exchange
19.6 Cryptographic Suites
19.7 Recommended Reading and Web Sites
19.8 Key Terms, Review Questions, and Problems
APPENDICES
Appendix A Projects for Teaching Cryptography and Network Security
A.1 Sage Computer Algebra Projects
A.2 Hacking Project
A.3 Block Cipher Projects
A.4 Laboratory Exercises
A.5 Research Projects
A.6 Programming Projects
A.7 Practical Security Assessments
A.8 Writing Assignments
A.9 Reading/Report Assignments
Appendix B Sage Examples
B.1
Appendix C Sage Problems
C.1
ONLINE CHAPTERS
PART SIX SYSTEM SECURITY
Chapter 20 Intruders
20.1 Intruders
20.2 Intrusion Detection
20.3 Password Management
20.4 Recommended Reading and Web Sites
20.5 Key Terms, Review Questions, and Problems
Appendix 20A The Base-Rate Fallacy
Chapter 21 Malicious Software
21.1 Types of Malicious Software
21.2 Viruses
21.3 Virus Countermeasures
21.4 Worms
21.5 Distributed Denial of Service Attacks
21.6 Recommended Reading and Web Sites
21.7 Key Terms, Review Questions, and Problems
Chapter 22 Firewalls
22.1 The Need for Firewalls
22.2 Firewall Characteristics
22.3 Types of Firewalls
22.4 Firewall Basing
22.5 Firewall Location and Configurations
22.6 Recommended Reading and Web Sites
22.7 Key Terms, Review Questions, and Problems
PART SEVEN LEGAL AND ETHICAL ISSUES
Chapter 23 Legal and Ethical Issues
23.1 Cybercrime and Computer Crime
23.2 Intellectual Property
23.3 Privacy
23.4 Ethical Issues
23.5 Recommended Reading and Web Sites
23.6 Key Terms, Review Questions, and Problems
ONLINE APPENDICES
WilliamStallings.com/Crypto/Crypto5e.html
APPENDIX D Standards and Standards-Setting Organizations
D.1 The Importance of Standards
D.2 Internet Standards and the Internet Society
D.3 National Institute of Standards and Technology
APPENDIX E Basic Concepts from Linear Algebra
APPENDIX F Measures of Security and Secrecy
APPENDIX G Simplified DES
E.1 Overview
E.2 S-DES Key Generation
E.3 S-DES Encryption
E.4 Analysis of Simplified DES
E.5 Relationship to DES
APPENDIX H Evaluation Criteria for AES
H.1 The Origins of AES
H.2 AES Evaluation
APPENDIX I More on Simplified AES
G.1 Arithmetic in GF(24)
G.2 The Mix Column Function
APPENDIX J Knapsack Public-Key Algorithm
I.1 The Knapsack Problem
I.2 The Knapsack Cryptosystem
I.3 Example
APPENDIX K Proof of the Digital Signature Algorithm
APPENDIX L TCP/IP and OSI
K.1 Protocols and Protocol Architectures
K.2 The TCP/IP Protocol Architecture
K.3 The Role of an Internet Protocol
K.4 IPv4
K.5 IPv6
K.6 The OSI Protocol Architecture
APPENDIX M Java Cryptographic APIs
M.1 Introduction
M.2 JCA and JCE Architecture
M.3 JCA Classes
M.4 JCE Classes
M.5 Conclusion and References
M.6 Using the Cryptographic Application
M.7 JCA/JCE Cryptography Example
APPENDIX N The Whirlpool Hash Function
N.1 Whirlpool Hash Structure
N.2 Block Cipher W
N.3 Performance of Whirlpool
APPENDIX O Data Compression Using ZIP
APPENDIX P PGP Random Number Generation
GLOSSARY
REFERENCES
INDEX
LIST OF ACRONYMS