采用群组密钥管理的分布式车联网信息认证方案  

A Distributed Authentication Protocol for VANET

作　　者：刘辉[1] 李晖[1] 

机构地区：[1]西安电子科技大学计算机网络与信息安全教育部重点实验室,西安710071

出　　处：《西安交通大学学报》2013年第2期58-62,共5页Journal of Xi'an Jiaotong University

基　　金：国家自然科学基金资助项目(61103143;61003300);陕西省自然科学基金资助项目(2011JQ8042)

摘　　要：鉴于车联网在提高驾驶安全性和道路通行效率方面起到的重要作用,针对车联网中的信息安全和隐私保护问题,提出了一个基于群组密钥管理的分布式信息认证方案。该方案使用高效的笔名签名来保护隐私;车辆使用基于无证书签密技术来获取密钥;密钥管理分区进行,减轻了密钥管理中心的负担;证书吊销列表实行属地化管理,解决了违规车辆的召回问题;采用批量验证技术降低了车辆的计算开销,使得信息认证的效率提高30%以上。安全性分析和仿真实验结果表明,该方案和现有车联网认证方案相比具有较高的安全性、可行性和鲁棒性。Vehicular ad hoc networks（VANET） are vital to enhance safety and efficiency in transportation systems.A distributed and group-based message authentication scheme is proposed to resolve information security and privacy-preserving problem in VANET,Efficient pseudonym signature is employed in the scheme to preserve privacy;and the certificateless signature technology is used to help vehicles to secretly receive a secret key.Management for secret keys is based on groups to reduce the burden of key distribution centre（KDC）.The certificate revocation list（CRL） is locally managed to solve the problem of vehicle recall.Moreover,batch technique is employed to accelerate the verification,and the efficiency is improved over 30%.Extensive simulations are conducted to confirm the efficiency of the scheme in various application scenarios.The results show that the scheme is more secure,feasible and robust than other existing schemes.

关 键 词：车载通信 群签名 签密 

分 类 号：TN918[电子电信—通信与信息系统]