翻訳と辞書 Words near each other ・ Pərvanlı ・ Pəzməri ・ P̃ ・ P–n diode ・ P–n junction ・ P–n junction isolation ・ P–P plot ・ P′′ ・ Q ・ Q & A (novel) ・ Q & A with Dean Martin ・ Q & Q ・ Q (1970s band) ・ Q (album) ・ Q (band) ・ Q (cipher) ・ Q (dairy) ・ Q (disambiguation) ・ Q (emulator) ・ Q (equational programming language) ・ Q (film) ・ Q (game engine) ・ Q (James Bond) ・ Q (magazine) ・ Q (New York City Subway service) ・ Q (novel) ・ Q (number format) ・ Q (programming language from Kx Systems) ・ Q (radio show) ・ Q (Sanna's Post) HQ Battery RA 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 Q (cipher) ： ウィキペディア英語版 Q (cipher) In cryptography, Q is a block cipher invented by Leslie McBride. It was submitted to the NESSIE project, but was not selected. The algorithm uses a key size of 128, 192, or 256 bits. It operates on blocks of 128 bits using a substitution-permutation network structure. There are 8 rounds for a 128-bit key and 9 rounds for a longer key. Q uses S-boxes adapted from Rijndael (also known as AES) and Serpent. It combines the nonlinear operations from these ciphers, but leaves out all the linear transformations except the permutation.〔 Q also uses a constant derived from the golden ratio as a source of "nothing up my sleeve numbers". Q is vulnerable to linear cryptanalysis; Keliher, Meijer, and Tavares have an attack that succeeds with 98.4% probability using 297 known plaintexts.〔 ==References== 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「Q (cipher)」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.