Cryptanalysis and improvement of a new proxy signature scheme

被引：0

作者：

Lu, Rong-Bo ^{[1
,2
]}

He, Da-Ke ^{[2
]}

Wang, Chang-Ji ^{[3
]}

Miao, Xiang-Hua ^{[2
]}

机构：

[1] College of Mathematics and Computer Science, Jishou University, Jishou 416000, China

[2] Lab. of Information Security and National Computing Gird, Southwest Jiaotong University, Chengdu 610031, China

[3] Department of Computer Science, Sun Yat-Sen University, Guangzhou 510275, China

来源：

Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology | 2007年 / 29卷 / 10期

关键词：

Electronic commerce - Verification;

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The proxy signature with proxy signer privacy protection without a trusted third party put forward by Gu-Zhang-yang (2005), does not posses the strong unforgeability property because of not being able to avoid the suspending-factor. With this scheme, the original signer can forge a valid proxy signature and pass the procedure of verification and revelation, therefore he or she can successfully prove it is signed by a legal proxy signer. To avoid this shortcoming, an improvement of a proxy signature scheme with proxy signer privacy protection is proposed based on the analysis of the Gu-Zhang-yang's scheme.

引用

页码：2529 / 2532