From the world's most renowned security technologist, Bruce Schneier, this 20th Anniversary Edition is the most definitive reference on cryptography ever published and is the seminal work on cryptography. Cryptographic techniques have applications far beyond the obvious uses of encoding and decoding information.

Praise for Applied Cryptography

"This book should be on the shelf of any computer professional involved in the use or implementation of cryptography."
? IEEE Software

"An encyclopedic survey ... could well have been subtitled 'The Joy of Encrypting' ... a useful addition to the library of any active or would-be security practitioner."
? Cryptologia

"...the best introduction to cryptography I've ever seen...The book the National Security Agency wanted never to be published..."
? Wired magazine

"...easily ranks as one of the most authoritative in its field..."
? PC magazine

"...monumental...fascinating...comprehensive...the definitive work on cryptography for computer programmers..."
? Dr. Dobb's journal

Written by the world's most renowned security technologist this special Anniversary Edition celebrates 20 years for the most definitive reference on cryptography ever published, Applied Cryptography, Protocols, Algorithms, and Source Code in C. Inside security enthusiasts will find a compelling introduction by author Bruce Schneider written specifically for this keepsake edition.

Included in this edition:

• Exclusive forward by Bruce Schneier
• Ways to defeat the key escrow mechanism
• Encryption algorithms, including algorithms from the former Soviet Union and South Africa, and the RC4 stream cipher
• Protocols for digital signatures, authentication, secure elections, digital cash, and more
• Detailed information on key management and cryptographic implementations