Applied Cryptography: Protocols, Algorithms and Source Code in C
Bruce Schneier
Language: English
Pages: 784
ISBN: 1119096723
Format: PDF / Kindle (mobi) / ePub
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. For developers who need to know about capabilities, such as digital signatures, that depend on cryptographic techniques, there's no better overview than Applied Cryptography, the definitive book on the subject. Bruce Schneier covers general classes of cryptographic protocols and then specific techniques, detailing the inner workings of real-world cryptographic algorithms including the Data Encryption Standard and RSA public-key cryptosystems. The book includes source-code listings and extensive advice on the practical aspects of cryptography implementation, such as the importance of generating truly random numbers and of keeping keys secure.
". . .the best introduction to cryptography I've ever seen. . . .The book the National Security Agency wanted never to be published. . . ." -Wired Magazine
". . .monumental . . . fascinating . . . comprehensive . . . the definitive work on cryptography for computer programmers . . ." -Dr. Dobb's Journal
". . .easily ranks as one of the most authoritative in its field." -PC Magazine
The book details how programmers and electronic communications professionals can use cryptography-the technique of enciphering and deciphering messages-to maintain the privacy of computer data. It describes dozens of cryptography algorithms, gives practical advice on how to implement them into cryptographic software, and shows how they can be used to solve security problems. The book shows programmers who design computer applications, networks, and storage systems how they can build security into their software and systems.
With a new Introduction by the author, this premium edition will be a keepsake for all those committed to computer and cyber security.
cryptography and the 1977 Information Theory Workshop lots of unexpected publicity. A more serious attempt occurred in 1980, when the NSA funded the American Council on Education to examine the issue with a view to persuading Congress to give it legal control of publications in the field of cryptography. The results fell far short of NSA’s ambitions and resulted in a program of voluntary review of cryptographic papers; researchers were requested to ask the NSA’s opinion on whether disclosure of
Request (Bob, Alice, Q, N). (Bob sends Q to Alice during Bob’s local round N.) From these actions, requirements can be specified. For example: — If Bob accepted message M from Alice at some point in the past, then Eve did not learn M at some point in the past. — If Bob accepted message M from Alice in Bob’s local round N, then Alice sent M to Bob as a response to a query in Bob’s local round N. To use the NRL Protocol Analyzer, a protocol must be specified using the previous constructs. Then,
pseudo-random-number generator in step (1) prevents Alice from deliberately choosing corrupt Is as verifiers. Even if she makes trivial changes in her document in an attempt to construct a set of corrupt Is, her chances of getting away with this are negligible. The hash function randomizes the Is; Alice cannot force them. This protocol works because the only way for Alice to fake a timestamp would be to convince all of the k people to cooperate. Since she chose them at random in step (1), the
Schneier ISBN: 0471128457 Publication Date: 01/01/96 Search this book: Go! Previous Table of Contents Next ----------- The Chess Grandmaster Problem Here’s how Alice, who doesn’t even know the rules to chess, can defeat a grandmaster. (This is sometimes called the Chess Grandmaster Problem.) She challenges both Gary Kasparov and Anatoly Karpov to a game, at the same time and place, but in separate rooms. She plays white against Kasparov and black against Karpov. Neither grandmaster knows about
cryptanalysis may recover the plaintext or the key. It also may find weaknesses in a cryptosystem that eventually lead to the previous results. (The loss of a key through noncryptanalytic means is called a compromise.) An attempted cryptanalysis is called an attack. A fundamental assumption in cryptanalysis, first enunciated by the Dutchman A. Kerckhoffs in the nineteenth century, is that the secrecy must reside entirely in the key [794]. Kerckhoffs assumes that the cryptanalyst has complete