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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 Naccache-Stern knapsack cryptosystem ： ウィキペディア英語版 Naccache–Stern knapsack cryptosystem Note: this is not to be confused with the Naccache–Stern cryptosystem based on the higher residuosity problem. The Naccache–Stern Knapsack Cryptosystem is an atypical public-key cryptosystem developed by David Naccache and Jacques Stern in 1997. This cryptosystem is deterministic, and hence is not semantically secure. This system also lacks provable security. ==System Overview== This system is based on a type of knapsack problem. Specifically, the underlying problem is this: given integers ''c'',''n'',''p'' and ''v''0,...,''v''''n'', find a vector $x\; \backslash in\; \backslash ^n$ such that :$c\; \backslash equiv\; \backslash prod\_^n\; v\_i^\; \backslash mod\; p$ The idea here is that when the ''v''''i'' are relatively prime and much smaller than the modulus ''p'' this problem can be solved easily. It is this observation which allows decryption. 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「Naccache–Stern knapsack cryptosystem」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.