基于ECC的存在特权集的门限群签名方案

Threshold group signature scheme with privilege subsets based on ECC

通过对一种ElGamal类型存在特权集的门限群签名方案的分析研究,提出了一种基于ECC的存在特权集的门限群签名方案。该方案能有效防止KDC的欺诈,且只有在同时满足(t,n)和(t1,n1)门限签名时才能生成消息的有效签名,从而实现了门限特性,并具有门限群签名应有的性质。

Through the analysis and study of a threshold group signature scheme which is based on ElGamal type,in order to solve the deficiency of the scheme,a new threshold group signature scheme with privileged subsets based on ECC is proposed.The proposed scheme can prevent the fraud of KDC efficiently. Only when the scheme satisfiesand （t,n） and （t1,n1）threshold signature,the valid signature can be generated,thus the scheme reached the property of threshold.The program also has the properties of threshold group signature.