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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 Anshel–Anshel–Goldfeld key exchange ： ウィキペディア英語版 Anshel–Anshel–Goldfeld key exchange Anshel–Anshel–Goldfeld protocol, also known as a commutator key exchange, is a key-exchange protocol using nonabelian groups. It was invented by Drs. Michael Anshel, Iris Anshel, and Dorian Goldfeld. Unlike other group-based protocols, it does not employ any commuting or commutative subgroups of a given platform group and can use any nonabelian group with efficiently computable normal forms. == Description == Let ''G'' be a fixed nonabelian group called a ''platform group''. Alice's public/private information: * ''Alice's public key'' is a tuple of elements $\}$ and their inverses: $a\_^,\; \backslash ldots,\; a\_^$, where $a\_\backslash in^\; \backslash ldots\; a\_^$. Bob's public/private information: * ''Bob's public key'' is a tuple of elements $\}$ and their inverses: $b\_^,\; \backslash ldots,\; b\_^$, where $b\_\backslash in^\; \backslash ldots\; b\_^$. Transitions: * Alice sends a tuple $b\_1A,\backslash ldots,A^b\_nA)$ to Bob. * Bob sends a tuple $a\_1B,\backslash ldots,B^a\_nB)$ to Alice. Shared key: The key shared by Alice and Bob is the group element $K\; =\; A^\; B^\; A\; B\; \backslash in\; G$ called the commutator of $A$ and $B$. * Alice computes $K$ as a product $A^\; \backslash cdot\; B^a\_^B\backslash cdots\; B^a\_^B$. * Bob computes $K$ as a product $(A^b\_^A\; \backslash cdots\; A^\; b\_^A)^\; \backslash cdot\; B\; =\; A^\; B^\; A\; B$. 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「Anshel–Anshel–Goldfeld key exchange」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.