A Scalable Blockchain-Based Trust Management Strategy for Vehicular Networks

Abstract

AbstractIn recent years, the dynamic environment on the Internet of Vehicles led vehicular communication networks’ trust management mechanism to become a research hotspot. Most of the existing trust management in vehicular networks relies on a centralized third party. However, it causes trust management to be limited to a single node and has high requirements for device performance. In order to improve the reliability of information exchanged between vehicles, we propose a scalable blockchain-based trust management strategy, which employs vehicle-related objective factors to evaluate the credibility of information transmitted between vehicles to determine the vehicles’ trust level. We also design a consensus mechanism to make all RSUs (Roadside Units) maintain a consistent and reliable distributed ledger as nodes so that vehicles can obtain global trust information more quickly during interaction to improve its reliability. The security and performance analysis shows that our strategy has high reliability and availability.KeywordsBlockchainVehicular networksTrust managementConsensus mechanism