基于twisted Edwards曲线的无证书盲签名方案  

Certificateless Blind Signature Scheme Based on twisted Edwards Curve

作　　者：刘芹 张标[1,2] 涂航 LIU Qin;ZHANG Biao;TU Hang(School of Cyber Science and Engineering,Wuhan University,Wuhan 430072,China;Key Laboratory of Aerospace Information Security and Trusted Computing of Ministry of Education,Wuhan University,Wuhan 430072,China)

机构地区：[1]武汉大学国家网络安全学院,武汉430072 [2]武汉大学空天信息安全与可信计算教育部重点实验室,武汉430072

出　　处：《信息网络安全》2022年第8期19-25,共7页Netinfo Security

基　　金：国家重点研发计划[2018YFC1604000]。

摘　　要：无证书公钥密码体制消除了传统公钥密码体制对证书的需求,解决了基于身份公钥密码体制的密钥托管问题。文章结合无证书密码体制与盲签名,基于twisted Edwards曲线提出一种高效的无证书盲签名方案,并在随机预言模型下,给出形式化的安全性证明。实验结果表明,与现有的同类型无证书盲签名方案相比,文章所提方案的签名和验签效率提高了15%以上。The certificateless public key cryptography eliminates the need for certificates in traditional public key cryptography, and solves the key escrow problem based on identity public key cryptography. This paper combined the advantages of the above-mentioned certificateless cryptography with blind signature, and proposed an efficient certificateless blind signature scheme based on twisted Edwards curve, and gave a formal security proof under the random oracle model.The experimental results show that the efficiency of signature and verification of the proposed scheme can be improved by more than 15% compared with the existing similar certificateless blind signature scheme.

关 键 词：盲签名 无证书公钥密码 Ed25519 可证明安全性 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]