一种改进的代理签名方案

AN IMPROVEMENT IN PROXY SIGNATURE SCHEME

描述了代理签名方案的一般性定义,以及常用的代理签名方案。就文献[1]第四部分提出的第一个问题:把标准签名RSA移植到代理签名的授权过程,对常用的代理签名方案进行改进。这个改进的方案不需要相互传送代理密钥,在授权的过程中只进行身份认证,既增加了安全性,同时效率也得到了提高。

This paper describes the general definition of proxy signature scheme,and the frequently-used proxy signature scheme.With regard to the first problem pointed out in part four of the literature： the authorisation process of transplanting standard RSA signature to proxy signature,an improvement on the frequently-used proxy signature scheme is made.This improved scheme needn＇t mutually transfer agent keys,in the process of authorisation only the identity need to be authorised,thus the security is increased and the efficiency is also improved as well.