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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 Anonymous veto network ： ウィキペディア英語版 Anonymous veto network In cryptography, the anonymous veto network (or AV-net) is a multi-party secure computation protocol to compute the boolean-OR function.〔F. Hao, P. Zieliński. (A 2-round anonymous veto protocol ). ''Proceedings of the 14th International Workshop on Security Protocols, 2006.〕 It presents an efficient solution to the Dining cryptographers problem. ==Description== All participants agree on a group $\backslash scriptstyle\; G$ with a generator $\backslash scriptstyle\; g$ of prime order $\backslash scriptstyle\; q$ in which the discrete logarithm problem is hard. For example, a Schnorr group can be used. For a group of $\backslash scriptstyle\; n$ participants, the protocol executes in two rounds. Round 1: each participant $\backslash scriptstyle\; i$ selects a random value $\backslash scriptstyle\; x\_i\; \backslash ,\backslash in\_R\backslash ,\; \backslash mathbb\_q$ and publishes the ephemeral public key $\backslash scriptstyle\; g^$ together with a zero-knowledge proof for the proof of the exponent $\backslash scriptstyle\; x\_i$. A detailed description of a method for such proofs is found in the article Fiat-Shamir heuristic. After this round, each participant computes: :$g^\; =\; \backslash prod\_\; g^\; /\; \backslash prod\_\; g^$ Round 2: each participant $\backslash scriptstyle\; i$ publishes $\backslash scriptstyle\; g^$ and a zero-knowledge proof for the proof of the exponent $\backslash scriptstyle\; c\_i$. Here, the participants chose $\backslash scriptstyle\; c\_i\; \backslash ;=\backslash ;\; x\_i$ if they want to send a "0" bit (no veto), or a random value if they want to send a "1" bit (veto). After round 2, each participant computes $\backslash scriptstyle\; \backslash prod\; g^$. If no one vetoed, each will obtain $\backslash scriptstyle\; \backslash prod\; g^\; \backslash ;=\backslash ;\; 1$. On the other hand, if one or more participants vetoed, each will have $\backslash scriptstyle\; \backslash prod\; g^\; \backslash ;\backslash neq\backslash ;\; 1$. 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「Anonymous veto network」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.