A Protocol for the Quantum Private Comparison of Equality with χ-Type State

被引:116
|
作者
Liu, Wen [1 ]
Wang, Yong-Bin [1 ]
Jiang, Zheng-Tao [1 ]
Cao, Yi-Zhen [1 ]
机构
[1] Commun Univ China, Sch Comp Sci, Beijing 100024, Peoples R China
关键词
Quantum private comparison; chi-Type state; Correctness; Security; KEY DISTRIBUTION; PARTICIPANT ATTACK; ENTANGLED STATE; COMMUNICATION; INFORMATION;
D O I
10.1007/s10773-011-0878-8
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We present a new quantum protocol for comparing the equal information with the help of a semi-honest third party (TP). Different from previous protocols, we utilize the four-particle chi-type states as the information carriers. Various kinds of outside attacks and participant attacks are discussed in detail. One party cannot learn 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.
引用
收藏
页码:69 / 77
页数:9
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