摘要
本文通过对刘景伟等人提出的高效的基于ID的无证书签名方案的安全性进行分析,指出了该签名方案是不安全的.该方案能受到替换公钥攻击,以至于任何人都能对任何消息成功伪造签名.最后,本文对该签名方案进行了改进,改进后方案的安全性是基于CDH问题的.
In this paper, we analyze the efficient ID-based certificateless signature scheme proposed by Lio ,ling-wei etc., and point out that their scheme is insecure. The certificateless signature scheme can suffer from public key replacement attack so that any one can forge a valid signature on any message. Finally, an improved scheme is proposed, whose security is based on the CDH problem.
出处
《漳州师范学院学报(自然科学版)》
2009年第1期26-29,共4页
Journal of ZhangZhou Teachers College(Natural Science)
基金
福建省自然科学基金(2007F3086
2008F5049)
福建省教育厅B类项目(2006Q005)
关键词
无证书
数字签名
替换公钥攻击
双线性对
certificateless
digital signature e
public key replacement attack
bilinear pairings