翻訳と辞書 Words near each other ・ Permotipula borealis ・ Permotipulidae ・ Permoșeni River ・ Permsky ・ Permsky (inhabited locality) ・ Permsky District ・ Permsky Uyezd ・ Permutable prime ・ Permutation ・ Permutation (album) ・ Permutation (Bill Laswell album) ・ Permutation (disambiguation) ・ Permutation (music) ・ Permutation (policy debate) ・ Permutation automaton ・ Permutation box ・ Permutation City ・ Permutation graph ・ Permutation group ・ Permutation matrix ・ Permutation model ・ Permutation pattern ・ Permutation polynomial ・ Permutation representation (disambiguation) ・ Permutatude theory ・ Permutohedron ・ Permutotetraviridae ・ Permyak Salty Ears ・ Pern ・ PERN Przyjazn SA Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Permutation box ： ウィキペディア英語版 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.〔 〕 In block ciphers, the S-boxes and P-Boxes are used to make the relation between the plaintext and the ciphertext difficult to understand (see Shannon's property of confusion). P-boxes are typically classified as ''compression'', ''expansion'', and ''straight'', according as the number of output bits is less than, greater than, or equal to the number of input bits. Only straight P-boxes are invertible. ==See also== * S-box * Substitution cipher * Nothing up my sleeve number * Boolean function 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Permutation box」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.