基于RSA和ELGamal的代理签名方案

The proxy-signature based on RSA and ELGamal

代理签名作为一种特殊的签名体制,在许多领域都有广泛的应用前景.此文研究的代理签名是基于RSA方案和ELGamal方案基础之上的有时间限制的代理签名方案,该方案对代理签名者的时间权利有了一定限制,有效地防止了代理权的滥用,并在此基础上分析了方案的安全性,不可伪造性及可验证性.

As a special signature system, Proxy Signature gets wide application in many fields. This paper studies time-limited Proxy Signature Scheme, which is based on RSA and ELGamal. This scheme restricts the time right of proxy signer, prevents authority abuse effectively. Besides, the paper also analyzes the security, unforgeability and verification of the scheme.