一种适用于车载自组网的无证书签名方案  

Certificateless Signature Scheme for Vehicular Ad-Hoc Networks

作　　者：朱栋 殷新春[1,2] ZHU Dong;YIN Xin-chun(College of Information Engineering,Yangzhou University,Yangzhou 225127,China;Guangling College,Yangzhou University,Yangzhou 225128,China)

机构地区：[1]扬州大学信息工程学院,江苏扬州225127 [2]扬州大学广陵学院,江苏扬州225128

出　　处：《小型微型计算机系统》2022年第4期785-794,共10页Journal of Chinese Computer Systems

基　　金：国家自然科学基金项目(61472343)资助。

摘　　要：车载自组网通过车辆与路边基础设施共享交通信息,从而提供各类安全服务,改善了人们的出行体验.但是,车载自组网中的通信安全和车辆的隐私保护等问题亟待解决.针对这些问题,首先,证明Thumbur等人的方案无法抵抗公钥替换攻击.其次,基于零信任架构提出一种适用于车载自组网的无证书签名方案,该方案中的可信中心与车辆通过公共信道协同产生公私钥对,摆脱了对安全信道的依赖.该方案在随机预言模型中基于椭圆曲线离散对数问题具有不可伪造性,并且满足匿名性和可追踪性等安全和隐私保护需求.性能分析表明,与其他相关方案相比,该方案在减少签名与验证的计算开销的同时降低了通信开销.Vehicular Ad-Hoc Networks(VANETs)provide various safety services and improve people′s travel experience by sharing traffic information among vehicles and roadside infrastructures.However,the communication security of VANETs and the privacy preservation of vehicles need to be solved urgently.To solve these problems,firstly,the scheme of Thumbur et al.is proved that it cannot resist public key substitution attacks.Secondly,a certificateless signature scheme for VANETs is proposed based on the zero-trust architecture(ZTA).Specifically,the trusted authority and the vehicle generate a tuple of the public key and the private key without secure channels.The scheme is proved unforgeable based on the elliptic curve discrete logarithm problem under the random oracle model and satisfies anonymity and traceability.Performance analysis shows that,compared with related schemes,the proposed scheme is superior to them in terms of computation cost and communication overhead.

关 键 词：车载自组网 隐私保护 零信任架构 无证书签名 随机预言模型 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]