A Secure Key Management Scheme for Heterogeneous Secure Vehicular Communication Systems

作     者：LEI Ao Chibueze Ogah Philip Asuquo Haitham Cruickshank SUN Zhili 

作者机构：Institute for Communication Systems (ICC) University of Surrey Guildford GU2 7XH United Kingdom 

出 版 物：《ZTE Communications》 (中兴通讯技术（英文版）)

年 卷 期：2016年第14卷第B6期

页      面：21-31页

学科分类：11[军事学] 1105[军事学-军队指挥学] 08[工学] 0839[工学-网络空间安全] 0838[工学-公安技术] 110505[军事学-密码学] 110503[军事学-军事通信学] 

主　　题：leaving probability bloekchain group key management heterogeneous vehicular communication systems (VCS) 

摘      要：Intelligent transportation system （ITS） is proposed as the most effective way to improve road safety and traffic efficiency. However, the future of ITS for large scale transportation infrastructures deployment highly depends on the security level of vehicular communication systems （VCS）. Security applications in VCS are fulfilled through secured group broadcast. Therefore, secure key management schemes are considered as a critical research topic for network security. In this paper, we propose a framework for providing secure key management within heterogeneous network. The seeurity managers （SMs） play a key role in the framework by retrieving the vehicle departnre infi^rmation, encapsulating block to transport keys and then executing rekeying to vehicles within the same security domain. The first part of this framework is a novel Group Key Management （GKM） scheme basing on leaving probability （LP） of vehicles to depart current VCS region. Vehicle＇s LP factor is introduced into GKM scheme to achieve a more effieient rekeying scheme and less rekeying costs. The second component of the framework using the blockchain concept to simplify the distributed key management in heterogeneous VCS domains. Extensive simulations and analysis are provided to show the effectiveness and effieiency of the proposed framework： Our GKM results demonstrate that probability-based BR reduees rekeying eost compared to the benchmark scheme, while the blockchain deereases the time eost of key transmission over heterogeneous net-works.