可收回代理权的公平盲代理盲签名方案

Fair Blind Proxy Blind Signature Scheme with the Property of Proxy Revocation

提出了一个具有可收回代理权特性的公平盲代理盲签名方案。该方案能安全收回代理签名权,克服目前许多代理签名方案代理签名权难以收回的缺陷,同时在代理签名权收回后,以前的有效代理签名仍能得到验证。该方案既保障了原始签名人的权益,又保护了代理签名人的隐私,更好地体现了公平性原则。由于方案能保证代理签名人每次以不同的别名进行有效的签名,因此还具有很好的使用灵活性。

A fair blind proxy blind signature scheme with the property of proxy revocation is proposed. For many previous proxy signature schemes, it is difficult for the original signer to revoke securely the proxy power. The proposed scheme comes over this weakness, in which the previous proxy signature can be easily verified after the original signer drawing back the proxy power. In the scheme, the identity of the proxy signer is blind to the original signer, both the original signer＇s interests and the proxy signer＇s privacy are protected, thus the fairness for the original signer and the proxy signer is well guaranteed. Since the scheme allows the proxy signer use different alias to sign the document in each time, it can be adaptable applied to many practical applications.