一种适用于车载自组织网络的无证书混合签密方案  

A Certificateless Hybrid Signcryption Scheme for Vehicular Ad-Hoc Networks

作　　者：林峰 罗镜明 朱智勤 Lin Feng;Luo Jingming;Zhu Zhiqin(College of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065;College of Automation,Chongqing University of Posts and Telecommunications,Chongqing 400065)

机构地区：[1]重庆邮电大学,通信与信息工程学院,重庆400065 [2]重庆邮电大学,自动化学院,重庆400065

出　　处：《汽车技术》2024年第10期56-62,共7页Automobile Technology

基　　金：重庆市教委“成渝地区双城经济圈建设”科技创新项目(KJCXZD2020028)。

摘　　要：为提高车载自组织网络中消息认证的机密性,提出了一种可证安全性的高效无证书混合签密方案。基于车载自组织网络系统模型,在车辆进行注册后引入假名自生成算法,并在签密算法中采用混合签密计算方式。理论证明与试验验证结果表明,与现有无证书签密方案相比,该方案在保护车辆隐私信息的同时,降低了可信中心和路侧单元的计算量,计算开销与通信开销保持较低水平,最后,在随机预言模型中证明了该方案的不可伪造性和机密性,并且能够抵御各类攻击。In order to improve the confidentiality of message authentication in vehicle-mounted ad hoc networks,an efficient certificateless hybrid signcryption scheme with provable security is proposed.Based on the model of the vehicle-mounted ad hoc network system,a pseudonymous self-generation algorithm is introduced after the vehicle is registered,and a hybrid signcryption calculation method is adopted in the signcryption algorithm.Through theoretical proof and experimental verification,compared with the existing certificateless signcryption scheme,the proposed scheme not only protects the privacy information of the vehicle,but also reduces the computation cost of the trusted center and the roadside unit,and keeps the time overhead and communication overhead at a low level,which proves the unforgeability and confidentiality of the proposed scheme in the random oracle model,and can resist various attacks.

关 键 词：车载自组织网络 无证书签密 无双线性映射 随机预言模型 

分 类 号：TN918[电子电信—通信与信息系统] U463.6[电子电信—信息与通信工程]