plaintext whitening

plaintext whitening
Безопасность: маскировка открытого текста псевдослучайным шумом

Универсальный англо-русский словарь. . 2011.

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  • Block cipher — In cryptography, a block cipher is a symmetric key cipher operating on fixed length groups of bits, called blocks, with an unvarying transformation. A block cipher encryption algorithm might take (for example) a 128 bit block of plaintext as… …   Wikipedia

  • Block cipher modes of operation — This article is about cryptography. For method of operating , see modus operandi. In cryptography, modes of operation is the procedure of enabling the repeated and secure use of a block cipher under a single key.[1][2] A block cipher by itself… …   Wikipedia

  • One-time pad — Excerpt from a one time pad In cryptography, the one time pad (OTP) is a type of encryption, which has been proven to be impossible to crack if used correctly. Each bit or character from the plaintext is encrypted by a modular addition with a bit …   Wikipedia

  • Ciphertext stealing — In cryptography, ciphertext stealing (CTS) is a general method of using a block cipher mode of operation that allows for processing of messages that are not evenly divisible into blocks without resulting in any expansion of the ciphertext, at the …   Wikipedia

  • DES-X — In cryptography, DES X (or DESX) is a variant on the DES (Data Encryption Standard) block cipher intended to increase the complexity of a brute force attack using a technique called key whitening. The original DES algorithm was specified in 1976… …   Wikipedia

  • Correlation attack — In cryptography, correlation attacks are a class of known plaintext attacks for breaking stream ciphers whose keystream is generated by combining the output of several linear feedback shift registers (called LFSRs for the rest of this article)… …   Wikipedia

  • Madryga — In cryptography, Madryga is a block cipher created in 1984 by W. E. Madryga. It was designed to be easy and efficient for implementation in software. Serious weaknesses have since been found in the algorithm, but it was one of the first… …   Wikipedia

  • Data Encryption Standard — The Feistel function (F function) of DES General Designers IBM First publis …   Wikipedia

  • Differential cryptanalysis — is a general form of cryptanalysis applicable primarily to block ciphers, but also to stream ciphers and cryptographic hash functions. In the broadest sense, it is the study of how differences in an input can affect the resultant difference at… …   Wikipedia

  • Triple DES — Triple Data Encryption Algorithm General First published 1998 (ANS X9.52) Derived from DES Cipher detail Key sizes 168, 112 or 56 bits (Keying option 1, 2, 3 respectively) Block sizes …   Wikipedia

  • RC5 — Eine Runde (zwei Halbrunden) von RC5 Entwickler Ronald L. Rivest Veröffentlicht 1994 Schlüssellänge 1 bis 2040 Bits …   Deutsch Wikipedia


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