Hierarchical Blockchain as Line Defense of Attacks to Messages Propagation in VANET

Abstract

The Vehicle Network (VANET) is a component of the Intelligent Transport System (ITS), for the exchange of messages between vehicles and roadside units (RSU). While due to the increase in the number of vehicles, there have been a lot of privacy, trust, and security challenges related to the Vehicle Network (VANET). The information exchanged between vehicles must be correct to achieve the CIA principle. Trust, privacy, and security solutions don’t apply to centralized networks. Most importantly, the lack of confidentiality, privacy, and availability. In this paper, solutions to solve security problems using hierarchical blockchain technology will be presented. Hierarchical blockchain has the advantages of unanimously emphasizing message credibility, decentralization, and immutable storage. All these advantages will provide solutions to those problems and challenges related to the security of VANETs. This paper seeks two main objectives. The first is to monitor malicious and no malicious vehicles by UAV, to validate the message before sending it via VANET. The second is a set of complex rules and specific calculations to verify the message. Consensus algorithms are also used to agree among vehicles on what is true, and to evaluate performance using the following metrics (Throughput, tolerance, latency).