- permutation block
- блок перестановок
Англо-русский словарь по компьютерной безопасности. Академик.ру. 2011.
permutation block
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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
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
Block (group theory) — In mathematics and group theory, a block system for the action of a group G on a set X is a partition of X that is G invariant. In terms of the associated equivalence relation on X , G invariance means that : x ≡ y implies gx ≡ gy for all g in G… … 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
ABC (block cipher) — Infobox block cipher name = ABC designers = Dieter Schmidt publish date = May 27 2002 derived from = MMB, SAFER derived to = related to = certification = key size = 512 bits block size = 256 bits structure = Substitution permutation network… … Wikipedia
Primitive permutation group — In mathematics, a permutation group G acting on a set X is called primitive if G preserves no nontrivial partition of X . In the other case, G is imprimitive. An imprimitive permutation group is an example of an induced representation; examples… … Wikipedia
Pseudorandom permutation — In cryptography, a pseudorandom permutation, abbreviated PRP, is an idealized block cipher. It means the cipher that cannot be distinguished from a random permutation (that is, a permutation selected at random with uniform probability, from the… … Wikipedia
Cipher Block Chaining — Mode d opération (cryptographie) En cryptographie, un mode d opération est la manière de traiter les blocs de texte clairs et chiffrés au sein d un algorithme de chiffrement par bloc. Chacun des modes possède ses propres atouts. Plusieurs modes… … Wikipédia en Français
Substitution-permutation network — In cryptography, an SP network, or substitution permutation network (SPN), is a series of linked mathematical operations used in block cipher algorithms such as AES.These networks consist of S boxes and P boxes that transform blocks of input bits … Wikipedia
Mathematics of Sudoku — The class of Sudoku puzzles consists of a partially completed row column grid of cells partitioned into N regions each of size N cells, to be filled in using a prescribed set of N distinct symbols (typically the numbers {1, ..., N}), so that each … Wikipedia
Mathieu group — Group theory Group theory … Wikipedia
