【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。更多还原

【Abstract】 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.更多还原