一个代理盲签名方案的安全性分析

Security analysis of proxy blind signature scheme

对一个具有消息恢复的指定接收者的代理盲签名方案提出安全分析,指出方案存在以下安全缺陷:由于模运算错误,使得方案不满足可验证性;对代理签名者而言,不满足方案的盲性;代理签名者可以生成对任意消息的有效签名,即方案不满足不可滥用性。

Cryptanalysis of a designated verifier proxy blind signature scheme with message recovery shows that it exists follow security flaws：Verifiability of the signature scheme is not valid in view of error in module computation;On the point of proxy signer,the scheme doesn’t meet the blind nature;the proxy signer can sign any message,that is to say the scheme doesn’t meet unmisusability.