摘要
车辆之间、车辆与基础设施之间的公开通信导致隐私泄露等安全隐患;随着车流量激增,认证机构为保障车联网的实时性需求,通常将批量认证不通过的消息列表直接丢弃,易损失重要信息。针对以上问题,提出了一种适用于车联网的无证书批量认证方案,车辆通信过程中使用的假名由车辆与权威机构协同生成,在可追踪车辆真实身份的前提下保证了车辆匿名性。基于贝叶斯优化的思想设计了一种车辆等级动态更新的方法,结合批量认证与查找算法,在不丢弃合法消息的前提下,快速找出恶意消息并追踪车辆真实身份。安全性分析表明,提出的方案可以有效抵御多种类型攻击,满足匿名性、不可链接性等安全需求;在随机预言机模型下,可以抵抗Type I型攻击和Type II型攻击。实验分析表明,与其他方案相比,提出的方案在计算开销和通信开销方面具有优势。
Open communication among vehicles and between vehicles and infrastructure in the internet of vehicles(IoV)introduces significant privacy and security risks.With increasing traffic density,authentication authorities often discard entire lists of failed batch authentication messages to maintain real-time performance,potentially resulting in the loss of critical information.To address these issues,this paper proposes a certificate-free batch authentication scheme tailored for IoV.The pseudonyms used during vehicle communications are jointly generated by the vehicles and a trusted authority,ensuring vehicle anonymity while allowing real identity traceability.A dynamic vehicle ranking update method based on Bayesian optimization is introduced to enhance efficiency.By combining batch authentication with an optimized message search algorithm,the scheme enables rapid identification of malicious messages and traceability of their origin without discarding legitimate ones.Security analysis demonstrates that the proposed scheme effectively resists various types of attacks and satisfies anonymity and unlinkability requirements.Under the random oracle model,it can withstand both Type I and Type II adversarial attacks.Experimental results show that the scheme outperforms existing methods in terms of computational and communication overhead.
作者
王练
罗楠楠
WANG Lian;LUO Nannan(School of Computer Science and Technology,Chongqing University of Posts and Telecommunications,Chongqing 400065,P.R.China)
出处
《重庆邮电大学学报(自然科学版)》
北大核心
2025年第4期540-553,共14页
Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)
基金
重庆邮电大学科研基金项目(A2020-212)。
关键词
车联网
无证书
批量认证
恶意消息查询
internet of vehicles
certificate-free
batch authentication
malicious message query
作者简介
通讯作者:王练wanglian@cqupt.edu.cn,教授,博士,主要研究方向为无线可靠传输、智能安全等。E-mail:wanglian@cqupt.edu.cn。;罗楠楠,硕士研究生,主要研究方向为车联网安全。E-mail:2095393618@qq.com。
