The security analysis of a threshold proxy quantum signature scheme

被引：3
|
作者：
Shi JianHong [1 ]
Zhang ShengLi [1 ]
Chang ZhengGang [1 ]
机构：
[1] PLA Informat Engn Univ, Zhengzhou 450004, Peoples R China
来源：
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY | 2013年 / 56卷 / 03期
基金：
中国国家自然科学基金;
关键词：
quantum cryptography; quantum signature; threshold proxy signature; secret sharing; DIRECT COMMUNICATION; IDENTITY AUTHENTICATION; SECRET; ENTANGLEMENT; STATES; TELEPORTATION; SHARE; NOISE;
D O I：
10.1007/s11433-013-5000-1
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In the YW threshold proxy quantum signature scheme proposed by Yang and Wen, it is found that the basic signature key is the same as the basic verification key, which means that the bitwise exclusive OR (XOR) of the t proxy signature keys is exactly the XOR of the t proxy verification keys. Therefore, the proxy signers can deny their signature and the specific verifiers can forge a legal signature. Furthermore, an attacker can obtain a legal threshold proxy signature for an arbitrary new message. These findings show that there are hidden security loopholes that should be carefully constructed in designing more efficent YW-scheme.
引用
收藏
页码：519 / 523
页数：5
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