有特权者的门限代理签名方案

Threshold proxy signature scheme with the privileged

针对当前门限代理签名中代理签名人权限相同的问题,基于双线性对提出了一个有特权者的门限代理签名方案.该方案实现了n个代理签名人中(t-1)个普通成员和1个特权者成员共同产生有效的代理签名,适用于有特权者参与的防止代理权滥用的签名场合.详细阐述了部分代理签名和门限代理签名的生成和验证过程,并证明了方案的正确性和安全性.

To the same weight problem of every proxy signer existing threshold proxy signature,a threshold proxy signature scheme with the privileged was proposed based on bilinear pairing.The valid threshold proxy signature can only be generated under the cooperation of t-1 common participants and the privileged in the scheme,and the signature can play important role in special situations in which the privileged was required and proxy weight were shared multi signer.The generation and verification processes of the partial proxy signature and threshold proxy signature are introduced in detail,and both the validity and security of the proposed scheme are proved.