Blockchain-Based Decentralized Trust Management in Vehicular Networks

Vehicular networks enable vehicles to generate and broadcast messages in order to improve traffic safety and efficiency. However, due to the nontrusted environments, it is difficult for vehicles to evaluate the credibilities of received messages. In this paper, we propose a decentralized trust manag...

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Vydáno v:IEEE internet of things journal Ročník 6; číslo 2; s. 1495 - 1505
Hlavní autoři: Yang, Zhe, Yang, Kan, Lei, Lei, Zheng, Kan, Leung, Victor C. M.
Médium: Journal Article
Jazyk:angličtina
Vydáno: Piscataway IEEE 01.04.2019
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:
Ad hoc networks
Bayesian analysis
Blockchain
Computer simulation
Cryptography
data credibility
Messages
Offsets
Receivers
Reliability
Safety
Servers
Statistical inference
Task analysis
Traffic safety
trust management
Trustworthiness
Vehicles
vehicular networks
ISSN:2327-4662, 2327-4662
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Shrnutí:Vehicular networks enable vehicles to generate and broadcast messages in order to improve traffic safety and efficiency. However, due to the nontrusted 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 (PoW) 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 (PoW). 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.
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ISSN:2327-4662
2327-4662
DOI:10.1109/JIOT.2018.2836144