Cryptanalysis of a Blind Proxy Signature Scheme
一个盲代理签名方案的安全性分析

The blind proxy signature scheme proposed in ref.1] is insecure.Managing center C cannot reveal the identity of the actual proxy signers of a given proxy signature.Besides,C and the original signer A can conspire to generate valid proxy signatures and impose them on an arbitrary proxy signer by using the identifying equation.