摘要
车辆自组织网络(Vehicular Ad-hoc Network,VANET)使交通系统更加智能和高效。信道的开放性以及车辆移动的高速性等特点,导致VANET存在诸如身份、传输数据以及位置等隐私信息泄露问题。目前,针对VANET的身份隐私泄露问题,越来越多的学者采用基于环签名的方案,但是车辆如何在行驶过程中与周围车辆组成签名环一直是一个难解决的问题。针对基础设施部署较完善地区,文中提出一种基于RSU(Road-Side Unit)辅助签名环形成的方案。该方案通过RSU收集覆盖区域内车辆的公钥并广播公钥集,从而确定区域内车辆的签名环,并利用双线性对映射实现RSU与车辆间消息传输的基于身份加密的过程。安全分析和实验证明,所提方案在基础设施较完善地区能够拥有较好的效率和安全性。
A vehicular ad-hoc network(VANET)makes the transportation system more intelligent and efficient.But due to the open wireless channel and the high-speed movement of vehicles,VANET has privacy leakage issues such as identity,transmission data and location.For the issue of identity privacy leakage of VANET,the existing researches use ring signature increasingly.However,how the vehicle forms a ring with the surrounding vehicles has always been a difficult issue to solve during the moving of vehicles.Therefore as for the area where the infrastructure is deployed well,a RSU-based assisting ring formation scheme is proposed.The public keys of the vehicles in the coverage area are collected by the RSU,thus determining the public key set and broadcasteds it to the vehicles in the area.And the use of bilinear pair mapping achieves the identity-based encryption process of the message transmission between RSU and vehicles.According to security analysis and experiments,the scheme can have better efficiency and security in areas with better infrastructure.
作者
张浩
蔡英
夏红科
ZHANG Hao;CAI Ying;XIA Hong-ke(School of Computer,Beijing Information Science&Technology University,Beijing 100101,China)
出处
《计算机科学》
CSCD
北大核心
2020年第5期301-305,共5页
Computer Science
基金
国家自然科学基金(61672106)
中央引导地方科技发展专项(Z171100004717002)。
