Cryptanalysis and Improvement of a New Proxy Signature Scheme
Lu Rong-bo①②; He Da-ke②; Wang Chang-ji③; Miao Xiang-hua②
①College of Mathematics and Computer Science, Jishou University, Jishou 416000, China; ②Lab. of Information Security and National Computing Gird, Southwest Jiaotong University, Chengdu 610031, China; ③Department of Computer Science, Sun Yat-Sen University, Guangzhou 510275, China
Abstract：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.
鲁荣波; 何大可; 王常吉; 缪祥华. 对一种新型代理签名方案的分析与改进[J]. 电子与信息学报, 2007, 29(10): 2529-2532 .
Lu Rong-bo; He Da-ke; Wang Chang-ji; Miao Xiang-hua. Cryptanalysis and Improvement of a New Proxy Signature Scheme. , 2007, 29(10): 2529-2532 .
2007, Vol. 29 
