基于RSA的代理环签名方案

RSA-based Proxy Ring Signature Scheme

针对现有的两个代理环签名方案存在的问题,提出了一种更为有效的代理环签名方案,并对该方案的安全性进行了详细的分析及证明。与传统代理环签名方案相比,本方案通过RSA算法实现基于身份的密钥体制,使签名过程无须证书交换,从而大大减小了系统的复杂度,同时基于RSA算法的实现方式,相对于双线性对实现方式,更易于实现;应用阈下信道技术,使本方案在原有的无条件完全匿名基础上增加了自我揭示的功能;采用密钥联合生成技术,使该方案具有更好的安全性。

A new efficient proxy ring signature scheme was proposed and the formal security of this scheme was argued and proved. The new scheme without certificate is more efficient in computation by using Id-based design pattern. The selbprovable function was performed by the application of the subliminal channel instead of the original unconditional anonymity. The key-associated generation mode makes the signature scheme safer. Comparing with the bilinear pairings algorithm, the RSA algorithm used in this scheme is more suitable for the practical application.