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expansion permutation

См. также в других словарях:

  • Permutation — For other uses, see Permutation (disambiguation). The 6 permutations of 3 balls In mathematics, the notion of permutation is used with several slightly different meanings, all related to the act of permuting (rearranging) objects or values.… …   Wikipedia

  • Permutation box — In cryptography, a permutation box (or P box) is a method of bit shuffling used to permute or transpose bits across S boxes inputs, retaining diffusion while transposing.[1] In block ciphers, the S boxes and P Boxes are used to make the relation… …   Wikipedia

  • Laplace expansion — This article is about the expansion of the determinant of a square matrix as a weighted sum of determinants of sub matrices. For the expansion of an 1/r potential using spherical harmonical functions, see Laplace expansion (potential). In linear… …   Wikipedia

  • Random permutation statistics — The statistics of random permutations, such as the cycle structure of a random permutation are of fundamental importance in the analysis of algorithms, especially of sorting algorithms, which operate on random permutations. Suppose, for example,… …   Wikipedia

  • 1/N expansion — In quantum field theory and statistical mechanics, the 1/N expansion (also known as the large N expansion) is a particular perturbative analysis of quantum field theories with an internal symmetry group such as SO(N) or SU(N). It consists in… …   Wikipedia

  • Data Encryption Standard — DES Eine Feistel Runde (F Funktion) Entwickler IBM Veröffentlicht 1975 Abgeleitet von …   Deutsch Wikipedia

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

  • GOST (block cipher) — Infobox block cipher name = GOST 28147 89 caption = Diagram of GOST designers = USSR publish date = 1994 (declassified) derived from = derived to = key size = 256 bits block size = 64 bits structure = Feistel network rounds = 32 cryptanalysis =… …   Wikipedia

  • LOKI — In cryptography, LOKI89 and LOKI91 are block ciphers designed as possible replacements for the Data Encryption Standard (DES). The ciphers were developed based on a body of work analysing DES, and are very similar to DES in structure. The LOKI… …   Wikipedia

  • перестановка с расширением — — [http://www.rfcmd.ru/glossword/1.8/index.php?a=index d=23] Тематики защита информации EN expansion permutation …   Справочник технического переводчика

  • Determinant — This article is about determinants in mathematics. For determinants in epidemiology, see Risk factor. In linear algebra, the determinant is a value associated with a square matrix. It can be computed from the entries of the matrix by a specific… …   Wikipedia

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