可实现隐私保护的容错聚合签名方案  

A fault-tolerant aggregate signature scheme with privacy protection

作　　者：任蕾 杜红珍 尤毅晨 刘珂 何利平 REN Lei;DU Hong-zhen;YOU Yi-chen;LIU Ke;HE Li-ping(School of Mathematics and Information Science,Baoji University of Arts and Sciences,Baoji 721013,Shaanxi,China)

机构地区：[1]宝鸡文理学院数学与信息科学学院,陕西宝鸡721013

出　　处：《宝鸡文理学院学报（自然科学版）》2024年第2期12-19,共8页Journal of Baoji University of Arts and Sciences(Natural Science Edition)

基　　金：国家自然科学基金项目(61402015);陕西省自然科学基础研究面上项目(2024JC-YBMS-537)。

摘　　要：目的 为车联网中车辆与路边单元之间的通信提供高效的认证和隐私保护,使聚合签名的验证过程不因个别无效签名的存在而导致所聚合的所有签名验证失败,提高聚合签名的验证效率。方法 将无证书密码体制和聚合签名算法相结合设计应用在车联网场景下的具有容错性质的无证书聚合签名方案。方案采用实时更新的伪身份为车辆提供隐私保护。结果 在随机预言机模型下将方案的安全性规约到椭圆曲线离散对数问题上,证明了签名方案满足不可伪造性。结论 与同类型方案对比分析表明,本文方案有较高的效率和良好的性能。Purposes—To provide efficient authentication and privacy protection for communication between vehicles and roadside units in the internet of vehicles(IoV),and improve the verification efficiency of aggregated signatures when the verification process of aggregate signature does not lead to the failure of all the aggregated signatures due to the existence of individual invalid signatures.Methods—In the article,the certificateless cryptography is combined with the aggregate signature scheme to design a certificateless aggregate signature scheme applied in IoV.The scheme adopts the pseudonym which can be updated in real time to provide privacy protection for vehicles.Result—The scheme provide the vehicles with the privacy protection by using the live updated false identity,and under the random oracle model,its unforgeability has been proved on the strength of elliptic curve discrete logarithm problem.Conclusion—The analysis shows the proposed scheme has higher efficiency and better performance compared with similar schemes.

关 键 词：无证书密码体制 容错聚合签名 车联网 隐私保护 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]