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arXiv 1902.03595quant-ph
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基于d-能级GHZ态的多方量子隐私大小比较

Multi-party quantum privacy comparison of size based on d-level GHZ states

Hao Cao, Wenping Ma, Liangdong Lyu, Yefeng He, Ge Liu

摘要:

量子隐私比较(QPC)在秘密投票选举、私人拍卖等领域有着重要的应用,目前已经提出了许多多方QPC(MQPC)协议来比较$k(k\geq 3)$参与者的平等性。然而,很少有MQPC用于比较其隐私的大小或值的示例。在本文中,我们提出了一个MQPC协议,通过该协议,任何$k(k\geq 3)$参与者可以比较他们的隐私的大小,只需执行一次协议。MQPC协议以$d-level$ GHZ态为量子资源,引入半诚实的$TP$来帮助参与者确定其隐私之间的关系.此外,该协议只涉及单粒子的么正变换和测量,参与者之间不需要事先共享共同秘密,这使得该协议更加高效。分析表明,该协议在理论上是安全的,可以抵抗内部攻击和外部攻击。

英文摘要:

Quantum privacy comparison(QPC) plays an important role in secret ballot elections, private auctions and so on. To date, many multi-party QPC(MQPC) protocols have been proposed to compare the equality of $k(k\geq 3)$ participants. However, there are few examples of MQPC used to compare the sizes or values of their privacies. In this paper, we propose a MQPC protocol by which any $k(k\geq 3)$ participants can compare the sizes of their privacies with executing the protocol just once. The proposed MQPC protocol takes the $d-level$ GHZ states as quantum resources, and a semi-honest $TP$ is introduced to help the participants to determine the relationship of their privacies. Further more, only single-particle unitary transformations and measurements are involved, and the participants need not to share common secrets with each other beforehand which makes the proposed protocol much more efficient. Analysis shows that our protocol is secure against internal and external attack in theory.

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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