Get Applied Cryptography: Protocols, Algorithms, and Source Code PDF

By Bruce Schneier

ISBN-10: 0471128457

ISBN-13: 9780471128458

". . .the top advent to cryptography I've ever visible. . . . The booklet the nationwide defense organisation sought after by no means to be released. . . ." -Wired Magazine

". . .monumental . . . interesting . . . entire . . . the definitive paintings on cryptography for desktop programmers . . ." -Dr. Dobb's Journal

". . .easily ranks as essentially the most authoritative in its field." -PC Magazine

". . .the bible of code hackers." -The Millennium complete Earth Catalog

This new version of the cryptography vintage will give you a entire survey of contemporary cryptography. The publication info how programmers and digital communications execs can use cryptography-the means of enciphering and interpreting messages-to retain the privateness of machine info. It describes dozens of cryptography algorithms, offers sensible recommendation on easy methods to enforce them into cryptographic software program, and indicates how they are often used to unravel defense difficulties. overlaying the most recent advancements in functional cryptographic strategies, this new version exhibits programmers who layout machine functions, networks, and garage platforms how they could construct defense into their software program and systems.

What's new within the moment Edition?
* New info at the Clipper Chip, together with how one can defeat the major escrow mechanism
* New encryption algorithms, together with algorithms from the previous Soviet Union and South Africa, and the RC4 move cipher
* the newest protocols for electronic signatures, authentication, safe elections, electronic money, and more
* extra unique details on key administration and cryptographic implementations

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Read or Download Applied Cryptography: Protocols, Algorithms, and Source Code in C (2nd Edition) PDF

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Additional info for Applied Cryptography: Protocols, Algorithms, and Source Code in C (2nd Edition)

Example text

4) Alice sends the ciphertext message to Bob. (5) Bob decrypts the ciphertext message with the same algorithm and key and reads it. What can Eve, sitting between Alice and Bob, learn from listening in on this protocol? If all she hears is the transmission in step (4), she must try to cryptanalyze the ciphertext. This passive attack is a ciphertext-only attack; we have algorithms that are resistant (as far as we know) to whatever computing power Eve could realistically bring to bear on the problem.

Public-key cryptosystems are vulnerable to chosen-plaintext attacks. If C = E(P), when P is one plaintext out of a set of n possible plaintexts, then a cryptanalyst only has to encrypt all n possible plaintexts and compare the results with C (remember, the encryption key is public). He won’t be able to recover the decryption key this way, but he will be able to determine P. Previous Table of Contents Next Products | Contact Us | About Us | Privacy | Ad Info | Home Use of this site is subject to certain Terms & Conditions, Copyright © 1996-2000 EarthWeb Inc.

Symmetric cryptosystems are not vulnerable to this attack because a cryptanalyst cannot perform trial encryptions with an unknown key. In most practical implementations public-key cryptography is used to secure and distribute session keys; those session keys are used with symmetric algorithms to secure message traffic [879]. This is sometimes called a hybrid cryptosystem. (1) Bob sends Alice his public key.

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Applied Cryptography: Protocols, Algorithms, and Source Code in C (2nd Edition) by Bruce Schneier


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