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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 Blom's scheme ： ウィキペディア英語版 Blom's scheme Blom's scheme is a symmetric threshold key exchange protocol in cryptography. The scheme was proposed by the Swedish cryptographer Rolf Blom in a series of articles in the early 1980s.〔Blom, Rolf. Non-public key distribution. In Proc. CRYPTO 82, pages 231–236, New York, 1983. Plenum Press〕〔Blom, Rolf. "An optimal class of symmetric key generation systems", Report LiTH-ISY-I-0641, Linköping University, 1984 ()〕 A trusted party gives each participant a secret key and a public identifier, which enables any two participants to independently create a shared key for communicating. However, if an attacker can compromise the keys of at least k users, he can break the scheme and reconstruct every shared key. Blom's scheme is a form of threshold secret sharing. Blom's scheme is currently used by the HDCP copy protection scheme to generate shared keys for high-definition content sources and receivers, such as HD DVD players and high-definition televisions. ==The protocol== The key exchange protocol involves a trusted party (Trent) and a group of $\backslash scriptstyle\; n$ users. Let Alice and Bob be two users of the group. 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「Blom's scheme」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.