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arXiv cs/9902010cs.CR
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对抗Q^2攻击结构的多方计算无条件安全

Multiparty computation unconditionally secure against Q^2 adversary structures

Adam Smith, Anton Stiglic

摘要:

我们在这里提出一个概括的工作所做的拉宾和本-奥尔。我们给出了一个多方计算协议,它容忍任何Q^2主动攻击结构,基于广播信道的存在,每对参与者之间的安全通信,和一个单调的跨度程序与乘法容忍的结构。实现的保密性是无条件的,虽然我们允许一个指数级的小概率错误。这是可能的,由于一个协议,用于计算产品的两个值已经共享的手段,一个同态承诺计划,最初出现在一份文件的Chaum,Evertse和范德格拉夫。

英文摘要:

We present here a generalization of the work done by Rabin and Ben-Or. We give a protocol for multiparty computation which tolerates any Q^2 active adversary structure based on the existence of a broadcast channel, secure communication between each pair of participants, and a monotone span program with multiplication tolerating the structure. The secrecy achieved is unconditional although we allow an exponentially small probability of error. This is possible due to a protocol for computing the product of two values already shared by means of a homomorphic commitment scheme which appeared originally in a paper of Chaum, Evertse and van de Graaf.

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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