Trust access authentication in vehicular network based on blockchain

• Published in: China communications Vol. 16; no. 6; pp. 18 - 30
• Main Authors: Guo, Shaoyong, Hu, Xing, Zhou, Ziqiang, Wang, Xinyan, Qi, Feng, Gao, Lifang
• Format: Journal Article
• Language: English
• Published: China Institute of Communications 01.06.2019; State Key Laboratory of Networking and Switching Technology, BUPT, Beijing 100876, China%State Grid Zhejiang Electric Power Co., Ltd. Institute of Electric Power Science, Zhejiang 310007, China%State Grid Henan Electric Power Company Information and Communication Company, Henan 450052, China%State Grid Hebei Electric Power Company, Information and Communication Company, Hebei 050022, China
• Subjects: Authentication; authentication mechanism; Blockchain; Digital signatures; Edge computing; many-to-many matching; Peer-to-peer computing; Privacy; Smart contracts; vehicular network; blockchain; authentication mechanism; vehicular network; edge computing; many-to-many matching
• ISSN: 1673-5447
• DOI: 10.23919/JCC.2019.06.002

Data sharing and privacy securing present extensive opportunities and challenges in vehicular network. This paper introduces 'trust access authentication scheme' as a mechanism to achieve real-time monitoring and promote collaborative sharing for vehicles. Blockchain, which can provide secure authentication and protected privacy, is a crucial technology. However, traditional cloud computing performs poorly in supplying low-latency and fast-response services for moving vehicles. In this situation, edge computing enabled Blockchain network appeals to be a promising method, where moving vehicles can access storage or computing resource and get authenticated from Blockchain edge nodes directly. In this paper, a hierarchical architecture is proposed consist of vehicular network layer, Blockchain edge layer and Block-chain network layer. Through a authentication mechanism adopting digital signature algorithm, it achieves trusted authentication and ensures valid verification. Moreover, a caching scheme based on many-to-many matching is proposed to minimize average delivery delay of vehicles. Simulation results prove that the proposed caching scheme has a better performance than existing schemes based on centralized model or edge caching strategy in terms of hit ratio and average delay.