一种前向安全的匿名代理签名方案

提出了具有新特点的代理签名方案:匿名性、可追踪性和前向安全性。在该方案中,代理签名者身份对验证者来说是不可见的,签名出现争议时,验证者可以借助原始签名者确定代理签名者的身份;攻击者即使i时段侵入系统,也无法伪造i时段之前的签名。同时,原始签名人还可以根据需要收回代理签名权。

A Forward Secure Anonymous Proxy Signature Scheme

A new proxy signature scheme is presented with the properties of anonymity,traceability and forward security.In the scheme,the identity of the proxy signer can not be known by the verifier,but the verifier can reveal the real identity of the proxy signer with the help of the original signer when the disputation happens;even if an adversary can intrude the system and obtain the signature key at time period i,it could not forge the proxy signature before time period i.Moreover,the proxy signature rights can be recalled according to the original signer's need.