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Introduction to Modern Cryptography, the most relied-upon textbook in the field, provides a mathematically rigorous yet accessible treatment of this fascinating subject. The authors have kept the book up-to-date while incorporating feedback from instructors and students alike; the presentation is refined, current, and accurate.

The book's focus is on modern cryptography, which is distinguished from classical cryptography by its emphasis on definitions, precise assumptions, and rigorous proofs of security. A unique feature of the text is that it presents theoretical foundations with an eye toward understanding cryptography as used in the real world. This revised edition fixed typos and includes all the updates made to the third edition, including:

• Enhanced treatment of several modern aspects of private-key cryptography, including authenticated encryption and nonce-based encryption.
• Coverage of widely used standards such as GMAC, Poly1305, GCM, CCM, and ChaCha20-Poly1305.
• New sections on the ChaCha20 stream cipher, sponge-based hash functions, and SHA-3.
• Increased coverage of elliptic-curve cryptography, including a discussion of various curves used in practice.
• A new chapter describing the impact of quantum computers on cryptography and providing examples of quantum-secure encryption and signature schemes.

Containing worked examples and updated exercises, Introduction to Modern Cryptography, Revised Third Edition can serve as a textbook for undergraduate- or graduate-level courses in cryptography, a reference for graduate students, researchers, and practitioners, or a general introduction suitable for self-study.