一种高效的基于身份的代理盲签名方案的分析与改进

在代理签名中,原始签名人可以将数字签名的权力委托给代理签名人;而在盲签名方案中,签名者不能看到被签的消息的内容,签名被拥有者公布后,签名者不能追踪签名.针对陈玲玲等提出基于身份的代理盲签名方案进行分析,指出其代理密钥的生成时不安全的且签名是可追踪的,并提出了一个改进的方案.改进后的方案克服了原有的不安全,且效率更高.

Security Analysis and Improvement of Efficient ID-based Proxy Blind Signature Scheme

Proxy signature,allows that an original signer can delegate his signing authority to a proxy signer.In blind signature scheme,a signing messages are unknown to the signer,which makes the blind signature and the identity of the requester cannot be traced.By analyzing the ID-based proxy blind signature proposed by Chen Ling-ling et al..We point out that the proxy key in their scheme is insecure.And the signature can be traced.An improved scheme is proposed which overcomes the disadvantages of original scheme,and our new scheme is more efficient than their scheme.