翻訳と辞書 Words near each other ・ Universal Language (Booker T. & the M.G.'s album) ・ Universal Language (disambiguation) ・ Universal Language (Joe Lovano album) ・ Universal law ・ Universal law of generalization ・ Universal League for the Material Elevation of the Industrious Classes ・ Universal Learning Centre ・ Universal library ・ Universal Licensing System ・ Universal Life ・ Universal Life (Cyprus) ・ Universal Life Church ・ Universal Communication Format ・ Universal Communication Platform ・ Universal Compassion ・ Universal composability ・ Universal Concepts Unlimited ・ Universal conductance fluctuations ・ Universal Congress Of ・ Universal Consciousness ・ Universal constructor ・ Universal Constructors ・ Universal controls ・ Universal Cooperatives ・ Universal Copyright Convention ・ Universal Core ・ Universal Corporation ・ Universal Creative ・ Universal Credit ・ Universal Credit Corporation Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Universal composability ： ウィキペディア英語版 Universal composability The framework of universal composability (UC)〔R. Canetti. Universally Composable Security: A New Paradigm for Cryptographic Protocols. ()〕 is a general-purpose model for the analysis of cryptographic protocols. It guarantees very strong security properties. Protocols remain secure even if arbitrarily composed with other instances of the same or other protocols. Security is defined in the sense of protocol emulation. Intuitively, a protocol is said to emulate another one, if no environment (observer) can distinguish the executions. Literally, the protocol may simulate the other protocol (without having access to the code). The notion of security is derived by implication. Assume a protocol $P\_1$ is secure per definition. If another protocol $P\_2$ emulates protocol $P\_1$ such that no environment tells apart the emulation from the execution of the protocol, then the emulated protocol $P\_2$ is as secure as protocol $P\_1$. == Ideal functionality == An ideal functionality is a protocol in which a trusted party that can communicate over perfectly secure channels with all protocol participants computes the desired protocol outcome. We say that a cryptographic protocol that cannot make use of such a trusted party fulfils an ideal functionality, if the protocol can emulate the behaviour of the trusted party for honest users, and if the view that an adversary learns by attacking the protocol is indistinguishable from what can be computed by a simulator that only interacts with the ideal functionality. 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「Universal composability」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.