Attack on the Enhanced Multiparty Quantum Secret Sharing

被引：1

作者：

杨帅 ^{[1
,2
]}

陈秀波 ^{[1
,2
]}

杨义先 ^{[1
,2
]}

机构：

[1] Information Security Center,Beijing University of Posts and Telecommunications

[2] State Key Laboratory of Information Security (Graduate University of Chinese Academy of Sciences)

来源：

Communications in Theoretical Physics | 2012年 / 58卷 / 07期

基金：

中国国家自然科学基金; 中央高校基本科研业务费专项资金资助;

关键词：

two-photon three-dimensional Bell states; multiparty quantum secret sharing (MQSS); collusion attack;

D O I：

暂无

中图分类号：

O431.2 [量子光学]; TN918.1 [理论];

学科分类号：

070104 ; 070207 ; 0803 ;

摘要：

Recently, Gao et al.’s [Commun. Theor. Phys. 52 (2009) 421] multiparty quantum secret sharing (MQSS) protocol with two-photon three-dimensional Bell states was enhanced by Hwang et al. [Commun. Theor. Phys. 56 (2011) 79]. The improved protocol removes some unnecessary unitary operations, devices, and transmissions by the technique of decoy single photons and careful modification. However, in this paper, we investigate the security of the improved protocol and find it is insecure. The eavesdropper can steal all Alice’s secret information. Furthermore, a feasible modification to remedy the security loophole is put forward. Our improved protocol provides a basic method to modify a kind of MQSS protocols which cannot resist the collusion attack.

引用

页码：51 / 54

页数：4

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