基于身份的指定验证人的门限代理签名方案

ID-based designated-verifier threshold proxy signature

在基于身份的公钥密码体制下实现了一个指定验证者的门限代理签名方案,该方案的实现基于双线性对。虽然人们对如何提高双线性对的执行效率方面取得了大量的研究成果,但是双线性对运算仍然是基于身份密码机制中最耗时的运算,该方案减少了双线性对的运算需求,从而提高了效率。另外还对此方案进行了相应的安全性分析及安全性证明。

An ID-based designated-verlfier threshold proxy signature using bilinear parings was introduced. Though fruitful achievements have been made in enhancing the computation of pairings, the computation of bilinear pairings is still a heavy burden on ID-based cryptography. The computation of bilinear pairings in the ID-based designated-verlfier threshold proxy signature was reduced and its efficiency was improved. In addition, a relevant security was analyzed and proved.