What s New in the Fourth Edition

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What's New in the Fourth Edition

In the three years since the third edition of this book was published, the field has seen continued innovations and improvements. In this new edition, I try to capture these changes while maintaining a broad and comprehensive coverage of the entire field. To begin this process of revision, the third edition was extensively reviewed by a number of professors who teach the subject. In addition, a number of professionals working in the field reviewed individual chapters. The result is that, in many places, the narrative has been clarified and tightened, and illustrations have been improved. Also, a large number of new "field-tested" problems have been added.

Beyond these refinements to improve pedagogy and user friendliness, there have been major substantive changes throughout the book. Highlights include the following:

• Simplified AES: This is an educational, simplified version of AES (Advanced Encryption Standard), which enables students to grasp the essentials of AES more easily.

• Whirlpool: This is an important new secure hash algorithm based on the use of a symmetric block cipher.

• CMAC: This is a new block cipher mode of operation. CMAC (cipher-based message authentication code) provides message authentication based on the use of a symmetric block cipher.

• Public-key infrastructure (PKI): This important topic is treated in this new edition.

• Distributed denial of service (DDoS) attacks: DDoS attacks have assumed increasing significance in recent years.

• Common Criteria for Information Technology Security Evaluation: The Common Criteria have become the international framework for expressing security requirements and evaluating products and implementations.

• Online appendices: Six appendices available at this book's Web site supplement the material in the text.

In addition, much of the other material in the book has been updated and revised.