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arXiv 0906.1671quant-ph
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两方量子协议不会对诚实但好奇的对手构成秘密

Two-Party Quantum Protocols Do Not Compose Securely Against Honest-But-Curious Adversaries

Louis Salvail, Miroslava Sotakova

摘要:

在本文中,我们建立在Salvail等人[SSS09]引入的两方量子计算模型的基础上,并证明在这个模型中,只有平凡正确的两方量子协议是弱自组合的。我们通过定义一个协议Π,将任何非平凡的子协议称为πN次,并证明存在一个量子诚实但好奇的策略,不能通过在π的每一个副本中局部作用来建模。为了实现这一点,我们分配一个真正的价值称为“回报”的任何战略,并表明,有一个连贯的和本地的战略可实现的最高回报之间的差距。

英文摘要:

In this paper, we build upon the model of two-party quantum computation introduced by Salvail et al. [SSS09] and show that in this model, only trivial correct two-party quantum protocols are weakly self-composable. We do so by defining a protocol Π, calling any non-trivial sub-protocol πN times and showing that there is a quantum honest-but-curious strategy that cannot be modeled by acting locally in every single copy of π. In order to achieve this, we assign a real value called "payoff" to any strategy for Πand show that that there is a gap between the highest payoff achievable by coherent and local strategies.

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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