In this new first edition, well-known author Behrouz Forouzan uses his accessible writing style and visual approach to simplify the difficult concepts of cryptography and network security. Forouzan presents difficult security topics from the ground up. A gentle introduction to the fundamentals of number theory is provided in the opening chapters, paving the way for the student to move on to more complex security and cryptography topics. Difficult math concepts are organized in appendices at the end of each chapter so that students can first learn the principles, then apply the technical background. Hundreds of examples, as well as fully coded programs, round out a practical, hands-on approach which encourages students to test the material they are learning.

1 Introduction

Part 1 Symmetric-Key Encipherment
2 Mathematics of Cryptography
3 Traditional Symmetric-Key Ciphers
4 Mathematics of Cryptography
5 Introduction to Modern Symmetric-Key Ciphers
6 Data Encryption Standard (DES)
7 Advanced Encryption Standard (AES)
8 Encipherment Using Modern Symmetric-Key Ciphers

Part 2 Asymmetric-Key Encipherment
9 Mathematics of Cryptography
10 Asymmetric-Key Cryptography

Part 3 Integrity, Authentication, and Key Management
11 Message Integrity and Message Authentication
12 Cryptographic Hash Functions
13 Digital Signature
14 Entity Authentication
15 Key Management

Part 4 Network Security
16 Security at the Application Layer: PGP and S/MIME
17 Security at the Transport Layer: SSL and TLS
18 Security at the Network Layer: IPSec