摘要
基于无证书密码体制,提出了一种可验证的环签密方案模型,并给出了基于双线性对的具体方案。该方案能够使消息发送者以匿名的方式发送消息,并可同时实现保密性和认证性两种功能。此外,在需要证实签密人身份时,能够公开验证其身份。在随机预言模型下证明了该方案可以抵抗自适应选择密文攻击。
A new model named verifiable certificateless ring slgncryption scheme was presented. A scheme based on bilinear pairings was also given. Using the scheme, the message sender can anonymously send the message, and the confidentiality and authenticity of the message are realized at the same time. If necessary, the real signer can prove his identity. Thus the scheme has been proved to be secure in the random oracle model.
出处
《计算机应用》
CSCD
北大核心
2007年第9期2167-2169,2173,共4页
journal of Computer Applications
基金
黑龙江省自然科学基金资助项目(F2004-06)
哈尔滨工程大学基础研究基金资助项目(HEUFT05067)
关键词
数字签名
环签密
无证书密码体制
双线性对
signature
ring signcryption
ceaificateless cryptosystem
bilinear pairings
