Computer Engineering and Applications ›› 2008, Vol. 44 ›› Issue (30): 108-110.DOI: 10.3778/j.issn.1002-8331.2008.30.033

• 网络、通信、安全 • Previous Articles     Next Articles

Cryptanalysis and improvement of proxy ring signature scheme

NIU Jiang-pin,ZHANG Jian-zhong   

  1. College of Mathematics and Information Science,Shaanxi Normal University,Xi’an 710062,China
  • Received:2008-04-22 Revised:2008-07-25 Online:2008-10-21 Published:2008-10-21
  • Contact: NIU Jiang-pin

对一个代理环签名方案的分析和改进

牛江品,张建中   

  1. 陕西师范大学 数学与信息科学学院,西安 710062
  • 通讯作者: 牛江品

Abstract: In this paper,through the analysis of Yu et al,proxy ring signature,it is found that this scheme is insecure against forgery attack.To eliminate the weakness of this scheme,a new proxy signature is proposed.The new scheme not only has the properties of proxy signature,but also has the anonymity of signer of ring signature.

Key words: proxy signature, ring signature, proxy ring signature, anonymity

摘要: 通过对Yu等人提出的代理环签名方案进行分析,发现该方案不能抵抗伪造攻击。针对该方案的这一缺陷,提出了一个新的代理签名方案。新方案不仅满足代理签名的各种性质,并且还满足环签名的匿名性。

关键词: 代理签名, 环签名, 代理环签名, 匿名性