An efficient protocol for the quantum private comparison of equality with W state
An efficient protocol for the quantum private comparison of equality with W state
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DOI：
10.1016/j.optcom.2011.02.017
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发表时间：
2011-06-01
影响因子：
2.4
通讯作者：
Jiang, Zheng-Tao
中科院分区：
文献类型：
--
作者：
Liu, Wen;Wang, Yong-Bin;Jiang, Zheng-Tao
我们提出了一个有效的量子协议，用于在半诚实第三方（TP）的帮助下比较相等的信息。我们的协议利用三重态W和单粒子测量。给出了协议安全性的精确证明。讨论了该协议在各种外部攻击下的安全性。外部窃听者无法获知任何关于私有信息的信息。讨论了该协议在各种攻击下的安全性。一方无法获知任何关于另一方隐私信息的信息。TP不能获知关于私有信息的任何信息，甚至不能获知关于比较结果或秘密输入的长度的信息。皇冠版权所有（C）2011由Elsevier B.V.出版。保留所有权利。
We propose an efficient quantum protocol for comparing the equal information with the help of a semi-honest third party (TP). Our protocol utilizes the triplet W states and the single-particle measurement. A precise proof of security of the protocol is presented. The security of this protocol with respect to various kinds of outside attacks is discussed. Outside eavesdroppers cannot learn any information about the private information. The security of this protocol with respect to various kinds of party attacks is also discussed. One party cannot learn any information about the other's private information. The TP cannot learn any information about the private information, even about the comparison result or the length of secret inputs. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.