基于身份无可信中心的指定验证人代理多重签名方案  

AN ID-BASED DESIGNATED-VERIFIER PROXY MULTI-SIGNATURE SCHEME WITHOUT TRUSTED PKG

作　　者：刘云芳[1] 左为平[1] 

机构地区：[1]天水师范学院物理与信息科学学院,甘肃天水741000

出　　处：《计算机应用与软件》2013年第4期316-318,共3页Computer Applications and Software

基　　金：天水师范学院中青年教师科研项目(TSA0936)

摘　　要：使用双线性对,提出一个基于身份无可信中心的指定验证人代理多重签名方案。该方案假设私钥生成中心PKG(Pri-vate Key Generator)是不可信的,PKG和用户共同生成用户的私钥。相比已有的基于身份的指定验证人代理签名方案,新方案避免了用户私钥的泄露,解决了在基于身份代理签名时需要无条件信任PKG的问题。分析表明,该方案是安全的,具有一定的实用性。An ID-based designated-verifier proxy multi-signature scheme without trusted PKG is proposed by using the bilinear pairings in this paper.The scheme supposes that Private Key Generator（PKG） is not a trusted dealer,and user＇s private key is generated by the PKG and user together.Compared with the existing ID-based designated-verifier proxy signature,the new scheme can prevent user＇s secret key from leaking and solve the problems that the existing ID-based proxy signature need to trust PKG unconditionally.Analysis shows that the scheme is secure and has the practicability to certain extent.

关 键 词：双线性对 代理多重签名 私钥生成中心 指定验证人 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]