Modern Cryptography: Theory and Practice

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9780130669438: Modern Cryptography: Theory and Practice

Many cryptographic schemes and protocols, especially those based on public-keycryptography, have basic or so-called "textbook crypto" versions, as these versionsare usually the subjects for many textbooks on cryptography. This book takes adifferent approach to introducing cryptography: it pays much more attention tofit-for-application aspects of cryptography. It explains why "textbook crypto" isonly good in an ideal world where data are random and bad guys behave nicely.It reveals the general unfitness of "textbook crypto" for the real world by demonstratingnumerous attacks on such schemes, protocols and systems under variousreal-world application scenarios. This book chooses to introduce a set of practicalcryptographic schemes, protocols and systems, many of them standards or de factoones, studies them closely, explains their working principles, discusses their practicalusages, and examines their strong (i.e., fit-for-application) security properties, oftenwith security evidence formally established. The book also includes self-containedtheoretical background material that is the foundation for modern cryptography.

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From the Back Cover:

"This book would be a good addition to any cryptographer's bookshelf. The book is self-contained; it presents all the background material to understand an algorithm and all the development to prove its security. I'm not aware of another book that's as complete as this one."

--Christian Paquin, Cryptographic/Security Developer, Silanis Technology Inc. "The book is both complete, and extraordinarily technically accurate. It would certainly be a useful addition to any cryptographer's or crypto-engineer's library."

--Marcus Leech, Advisor, Security Architecture and Planning, Nortel Networks Build more secure crypto systems--and prove their trustworthiness Modern Cryptography is the indispensable resource for every technical professional who needs to implement strong security in real-world applications.

Leading HP security expert Wenbo Mao explains why "textbook" crypto schemes, protocols, and systems are profoundly vulnerable by revealing real-world-scenario attacks. Next, he shows how to realize cryptographic systems and protocols that are truly "fit for application"--and formally demonstrates their fitness. Mao presents practical examples throughout and provides all the mathematical background you'll need.

Coverage includes:

  • Crypto foundations: probability, information theory, computational complexity, number theory, algebraic techniques, and more
  • Authentication: basic techniques and principles vs. misconceptions and consequential attacks
  • Evaluating real-world protocol standards including IPSec, IKE, SSH, TLS (SSL), and Kerberos
  • Designing stronger counterparts to vulnerable "textbook" crypto schemes

Mao introduces formal and reductionist methodologies to prove the "fit-for-application" security of practical encryption, signature, signcryption, and authentication schemes. He gives detailed explanations for zero-knowledge protocols: definition, zero-knowledge properties, equatability vs. simulatability, argument vs. proof, round-efficiency, and non-interactive versions.

About the Author:

WENBO MAO, PhD, is a Technical Contributor to the Trusted Systems Lab at Hewlett-Packard Laboratories, Bristol, UK. Mao leads HP's participation and research activities in Computer Aided Solutions to Secure Electronic Commerce Transactions (CASENET), a research project funded by the European Union. His research interests include cryptography, computer security, and formal methods. He is a member of the International Association for Cryptographic Research (IACR), the Institute of Electrical and Electronics Engineers (IEEE), and the British Computer Society (BCS).

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