新的代理签名者身份隐藏的代理签名体制

利用椭圆曲线上的双线性映射设计了一种新的代理签名体制。该体制在验证时只能识别原始签名者的身份，而不能识别代理签名者的身份，从而达到了保护代理签名者利益的目的。但是在出现分歧时，原始签名者可以向验证者提供证据来指出代理签名者的身份，这样也保护了原始签名者的利益。该体制无需可信中心参与，有效地隐藏了代理签名者的身份，同时还具有短签名的优点。

A New Proxy Signature Scheme with Proxy Signer Privacy Protection

In this paper we propose a new proxy signature scheme from bilinear pairing.In our scheme,when the signature has been verified,only the original signer's identity can be confirmed,the proxy signer's identity could not be known for protecting the benefit of the proxy signer.When the disputation is appeared,the original signer can indicate the identity of the proxy signer to the verifier for protecting his own benefit.In our scheme,a trusted authority need not involved and the proxy signer's privacy can be protected efficiently.Moreover,our scheme is designed from bilinear pairing,thus it has the advantages which short signatures have.