摘要
A protocol for quantum private comparison of equality(QPCE) is proposed based on five-particle cluster state with the help of a semi-honest third party(TP). In our protocol, TP is allowed to misbehave on its own but can not conspire with either of two parties. Compared with most two-user QPCE protocols, our protocol not only can compare two groups of private information(each group has two users) in one execution, but also compare just two private information. Compared with the multi-user QPCE protocol proposed, our protocol is safer with more reasonable assumptions of TP. The qubit efficiency is computed and analyzed. Our protocol can also be generalized to the case of 2N participants with one TP. The 2N-participant protocol can compare two groups(each group has N private information)in one execution or just N private information.
A protocol for quantum private comparison of equality（QPCE） is proposed based on five-particle cluster state with the help of a semi-honest third party（TP）. In our protocol, TP is allowed to misbehave on its own but can not conspire with either of two parties. Compared with most two-user QPCE protocols, our protocol not only can compare two groups of private information（each group has two users） in one execution, but also compare just two private information. Compared with the multi-user QPCE protocol proposed, our protocol is safer with more reasonable assumptions of TP. The qubit efficiency is computed and analyzed. Our protocol can also be generalized to the case of 2N participants with one TP. The 2N-participant protocol can compare two groups（each group has N private information）in one execution or just N private information.
作者
昌燕
张文博
张仕斌
王海春
闫丽丽
韩桂华
盛志伟
黄源源
索望
熊金鑫
Yan Chang Wen-Do Zhang Shi-Bin Zhang Hai-Chun Wang Li-Li Yan Gui-Hua Han Zhi-Wei Sheng Yuan-Yuan Huang Wang Suo Jin-Xin Xiong(Department of Information Security Engineering, Chengdu University of Information Technology, Chengdu 610225, China School of Economics, Sichuan University, Chengdu 610065, China)
基金
Supported by NSFC under Grant Nos.61402058,61572086
the Fund for Middle and Young Academic Leaders of CUIT under Grant No.J201511
the Science and Technology Support Project of Sichuan Province of China under Grant No.2013GZX0137
the Fund for Young Persons Project of Sichuan Province of China under Grant No.12ZB017
the Foundation of Cyberspace Security Key Laboratory of Sichuan Higher Education Institutions under Grant No.szjj2014-074
关键词
量子效率
粒子
团簇
私人信息
多用户
参与者
协议
第三方
quantum private comparison of equality five-particle cluster state semi-honest third party
