矢量空间秘密共享门限代理签名方案  

A Vector Space Secret Sharing-Threshold Proxy Signature Scheme from Bilinear Pairings

作　　者：李兵[1] 胡伟[1] 

机构地区：[1]湖南第一师范学院,湖南长沙410205

出　　处：《计算机工程与科学》2012年第5期49-52,共4页Computer Engineering & Science

基　　金：湖南省教育厅科研项目(11C0280;10C0526)

摘　　要：本文把矢量空间秘密共享和代理签名结合起来,构建了一种基于访问结构的门限代理签名方案。任何参与者的授权子集都能很容易地产生代理签名,而非参与者不可能产生有效的代理签名,接收者可以通过验证方法验证个体代理签名和多重代理签名的合法性,而且能保证任何参与者都能检测出错误的子秘密,能抵御各种可能的攻击。In this paper, by combining vector space secret sharing with proxy signature, we present a vector space secret sharing scheme, the threshold proxy signature. In this scheme, there is a trusted share distribution center, and the threshold proxy signature can be easily produced if an authorized subset of participants pool their secret shares, and it is impossible for them to generate a proxy signature if an unauthorized subset of participants pool their secret shares. The validity of the partial signature and the threshold proxy signature can be verified by means of verification equations. Moreover the suspected forgery can be traced and the malicious participants can be caught in this scheme. None of the possible attacks can successfully break this scheme.

关 键 词：矢量空间秘密共享 门限代理签名 双线性映射 强不可伪造性 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]