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arXiv cs/0207079cs.CR
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关于非交换同态公钥密码体制

On non-abelian homomorphic public-key cryptosystems

D. Grigoriev, I. Ponomarenko

摘要:

现代密码学的一个重要问题涉及代数结构中的秘密公钥计算。我们构造了同态密码体制为(秘密)满态f:G -> H,其中G,H是(代数已知)群,H是有限的.要加密的消息的字母是H的元素h元素,而其加密G的元素g使得f(g)=h。同态密码系统允许人们使用加密信息(不知道H上的原始消息)进行计算(在群G中操作)。本文首次对非阿贝尔群H构造了某些同态密码体制(以前,同态密码体制只在阿贝尔群的情况下才知道)。事实上,我们对任何可解(固定)群H给出了这样一个系统。

英文摘要:

An important problem of modern cryptography concerns secret public-key computations in algebraic structures. We construct homomorphic cryptosystems being (secret) epimorphisms f:G --> H, where G, H are (publically known) groups and H is finite. A letter of a message to be encrypted is an element h element of H, while its encryption g element of G is such that f(g)=h. A homomorphic cryptosystem allows one to perform computations (operating in a group G) with encrypted information (without knowing the original message over H). In this paper certain homomorphic cryptosystems are constructed for the first time for non-abelian groups H (earlier, homomorphic cryptosystems were known only in the Abelian case). In fact, we present such a system for any solvable (fixed) group H.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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