基于身份的门限代理签名方案  

ID-based threshold proxy signature Scheme

作　　者：田志刚[1] 鲍皖苏[1] 

机构地区：[1]解放军信息工程大学电子技术学院,郑州450004

出　　处：《计算机工程与应用》2009年第9期117-119,共3页Computer Engineering and Applications

基　　金：国家自然科学基金(No.10501053)~~

摘　　要：在基于身份的密码体制中,用户的公钥由用户的身份信息决定,不需要CA颁发公钥证书,解决了公钥存储和管理问题。门限代理签名因其可以将签名权利分散于一个签名团体,可以有效防止代理签名权的滥用而受到广泛关注。基于双线性映射对构造了一个基于身份的门限代理签名方案,分析了方案的可区分性、可验证性、强不可伪造性、强可识别性、强不可否认性等安全特性,并指出该方案可以很好地抵抗合谋攻击。In the ID-based crypto system,user＇ public key is decided by his ID which is not distributed by CA.This way has solved the problem of public key＇s storage and management.In a threshold proxy signature,the power of signature is distributed to a signature group which can prevent the abuse of the power.This article introduces an ID-based threshold signature scheme which uses bilinear parings.In addition,an analysis is given about the relevant security of this scheme.And this scheme can also withstand the conspiracy attack.

关 键 词：门限代理签名 基于身份的签名 双线性对 合谋攻击 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]