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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Threefish ： ウィキペディア英語版 Threefish Threefish is a symmetric-key tweakable block cipher designed as part of the Skein hash function, an entry in the NIST hash function competition. Threefish uses no S-boxes or other table lookups in order to avoid cache timing attacks;〔 The paper in which Threefish was introduced.〕 its nonlinearity comes from alternating additions with exclusive ORs. In that respect, it is similar to Salsa20, TEA, and the SHA-3 candidates CubeHash and BLAKE. Threefish and the Skein hash function were designed by Bruce Schneier, Niels Ferguson, Stefan Lucks, Doug Whiting, Mihir Bellare, Tadayoshi Kohno, Jon Callas, and Jesse Walker. ==Description of the cipher〔== At first the block, the tweak and the key (of length 256, 512 or 1024 bits) is converted into $N\_w$ words of 64 bit length each. These words are treated as 64bit unsigned Little endian integers throughout the cipher. All additions and subtractions are defined modulo $2^$ 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「Threefish」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.