摘要
强不可伪造性和对安全信道依赖性的分析是对LKK代理签名方案安全性分析的重要内容之一。对文献[6-8]中的改进的LKK代理签名方案进行安全性分析,指出文献[6,7]中的方案仍存在缺陷并给出攻击方法,指出文献[8]中方案是一个具有强不可伪造性的不需要安全信道的方案。
The analysis of the property of the strong unforgeability and the necessity of a secure channel is one of the important content for the security analysis of the LKK proxy signature scheme.In this paper,we present a security analysis of some improved LKK proxy signature schemes,proposed in [6-8].We point out the schemes,proposed in [6,7],still have weakness and present the attack methods to them.And we point out the scheme,proposed in [8] ,can keep the property of the strong unforgeability and does not need the secure channel.
出处
《计算机工程与应用》
CSCD
北大核心
2007年第18期150-152,173,共4页
Computer Engineering and Applications
基金
河南省杰出青年科学基金资助项目(No.0312001800)。
关键词
代理签名
强不可伪造性
安全信道
安全性分析
proxy signature
strong unforgeability
secure channel
security analysis