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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 Yahalom (protocol) ： ウィキペディア英語版 Yahalom (protocol) Yahalom is an authentication and secure key-sharing protocol designed for use on an insecure network such as the Internet. Yahalom uses a trusted arbitrator to distribute a shared key between two people. This protocol can be considered as an improved version of Wide Mouth Frog protocol (with additional protection against man-in-the-middle attack), but less secure than Needham-Schroeder. == Protocol description == If Alice (A) initiates the communication to Bob (B) with S is a server trusted by both parties, the protocol can be specified as follows using security protocol notation: * A and B are identities of Alice and Bob respectively * $K\_$ is a symmetric key known only to A and S * $K\_$ is a symmetric key known only to B and S * $N\_A$ and $N\_B$ are nonces generated by A and B respectively * $K\_$ is a symmetric, generated key, which will be the session key of the session between A and B $A\; \backslash rightarrow\; B:\; A,\; N\_A$ :Alice sends a message to Bob requesting communication. $B\; \backslash rightarrow\; S:\; B,\backslash \_$. $S\; \backslash rightarrow\; A:\; \backslash \_\backslash \}\_$ and a message to be forwarded to Bob. $A\; \backslash rightarrow\; B:\; \backslash \_\_\{K\_\{AB\}\}$ :Alice forwards the message to Bob and verifies $N\_A$ has not changed. Bob will verify $N\_B$ has not changed when he receives the message. 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「Yahalom (protocol)」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.