Multi-user private comparison protocol using GHZ class states

被引：127

作者：

Chang, Yao-Jen ^{[1
]}

Tsai, Chia-Wei ^{[2
]}

Hwang, Tzonelih ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Comp Sci & Informat Engn CSIE, Tainan 70101, Taiwan

[2] Inst Informat Ind, Tainan, Taiwan

来源：

QUANTUM INFORMATION PROCESSING | 2013年 / 12卷 / 02期

关键词：

Greenberger-Horne-Zeilinger class state; Quantum private comparison; Trojan horse attack; SECURE DIRECT COMMUNICATION; QUANTUM; TELEPORTATION; ENTANGLEMENT; SCHEME;

D O I：

10.1007/s11128-012-0454-z

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

This paper proposes a pioneering quantum private comparison (QPC) protocol for n users. State-of-the-art QPC protocols have been designed for two users who wish to compare their private information. However, if n users want to perform the equality comparison, these two-user QPC protocols have to be executed repeatedly at least n - 1 times. The proposed protocol allows n users' private information to be compared within one protocol execution. The proposed QPC protocol takes the Greenberger-Horne-Zeilinger (GHZ) class as a quantum resource and uses a special property in the GHZ-class state to perform the equality comparison. Moreover, due to the one-step quantum transmission, the protocol is free from Trojan horse attacks and it is also shown to be secure against other well-known attacks.

引用

页码：1077 / 1088

页数：12

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