Blockchain-based decentralized trust management in vehicular networks

Yang, Zhe, Yang, Kan, Lei, Lei, Zheng, Kan, and Leung, Victor C.M. (2019) Blockchain-based decentralized trust management in vehicular networks. IEEE Internet of Things Journal, 6 (2). pp. 1495-1505.

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Vehicular networks enable vehicles to generate and broadcast messages in order to improve traffic safety and efficiency. However, due to the non-trusted environments, it is difficult for vehicles to evaluate the credibilities of received messages. In this paper, we propose a decentralized trust management system in vehicular networks based on blockchain techniques. In this system, vehicles can validate the received messages from neighboring vehicles using Bayesian Inference Model. Based on the validation result, the vehicle will generate a rating for each message source vehicle. With the ratings uploaded from vehicles, Roadside Units (RSUs) calculate the trust value offsets of involved vehicles and pack these data into a "block". Then, each RSU will try to add their "blocks" to the trust blockchain which is maintained by all the RSUs. By employing the joint Proof-of-Work and Proof-of-Stake consensus mechanism, the more total value of offsets (stake) is in the block, the easier RSU can find the nonce for the hash function (proof-of-work). In this way, all RSUs collaboratively maintain an updated, reliable, and consistent trust blockchain. Simulation results reveal that the proposed system is effective and feasible in collecting, calculating, and storing trust values in vehicular networks.

Item ID: 54260
Item Type: Article (Research - C1)
ISSN: 2327-4662
Keywords: Blockchain, trust management, vehicular networks, data credibility
Copyright Information: Copyright © 2018 IEEE.
Funders: China Natural Science Funding (NSF), BUPT Excellence PhD Students Foundation
Projects and Grants: NSF 61731004, BUPT CX2016208
Date Deposited: 22 Jun 2018 03:06
FoR Codes: 40 ENGINEERING > 4006 Communications engineering > 400608 Wireless communication systems and technologies (incl. microwave and millimetrewave) @ 100%
SEO Codes: 89 INFORMATION AND COMMUNICATION SERVICES > 8901 Communication Networks and Services > 890103 Mobile Data Networks and Services @ 100%
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