基于证书指名签名方案

基于证书公钥密码学是Gentry在Eurocrypt 2003上首次提出的,它克服了传统公钥系统中存在的证书管理问题和基于身份公钥系统中存在的密钥托管问题.为了防止签名被滥用,Kim等人提出指名签名体制,在这里只有签名接收人才能验证和向第三方证明签名的有效性,即使是签名人也不能验证或证明签名的有效性,签名的使用完全由签名的接收人控制.将基于证书签名和指名签名相结合,本文提出一个基于双线性对的基于证书指名签名方案.

Certificate-based Nominative Signature Scheme

The certificate-based public key cryptography was introduced by Gentry in Eurocrypt 2003,which can overcome the certificate management problem in traditional public key system,as well as the private key escrow problem in identity-based public key system.A feasible solution to prevent potential misuse of signatures is to put some restrictions on their verification.Kim,Park and Won introduced the nominative signature,in which only the nominee can verify and prove the validity of given signatures.Combining the concept of certificate-based signature with the concept of nominative signature,we propose a certificate-based nominative signature scheme from bilinear pairings.