A Privacy Preserving Blockchain-based Reward Solution for Vehicular Networks

Vehicular networks use a vehicle to infrastructure (V2I) to improve traffic safety by gathering information from vehicles such as traffic conditions and accidents. This approach is based on the vehicle's location information and the reliability of the data collected from the vehicle. At the same time, the voluntary participation of drivers requires privacy protection and compensation for sharing trusted information. In this paper, we propose a blockchain-based decentralized reward solution considering drivers' privacy. Using a unique identifier has a vulnerability of exposing the vehicle's location to attackers and hence the attackers can easily trace any vehicles. By employing changing pseudonyms instead of using a unique identifier, the driver can protect their location privacy from other vehicles and Roadside Units (RSUs) that could be a potential attacker. The proposed solutions also enable service providers can verify the reliability and integrity of the messages transmitted by legitimate vehicles