A Blockchain Based Vehicular Ad-hoc System

As connected vehicles become more prevalent, vehicular ad-hoc networks (VANETs) are being used to support vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communications for advanced driver-assistance systems (ADAS) and other intelligent services. However, secure communication is crucial in VANETs to prevent traffic accidents and ensure the safety of drivers and passengers. Many studies have been conducted on V2I authentication protocols, but most do not consider handover situations and can cause unnecessary computations, which can overload vehicles with limited computing resources. To address these issues, researchers have proposed a blockchain-based handover authentication protocol for VANETs. This protocol leverages the strength of blockchain technology to provide decentralization, data integrity, and transparency. It also ensures efficiency by only requiring lightweight computations during handover situations. The proposed protocol was subjected to formal analysis using Burrows–Abadi–Needham (BAN) logic, Real-Or-Random (ROR) oracle model, and Automated Validation of Internet Security Protocols and Applications (AVISPA) simulation. The researchers also conducted simulations using Network Simulator 3 (NS-3) to verify the practicality of the proposed protocol. Computational cost and security features of the proposed protocol were compared with existing protocols, demonstrating that the proposed protocol is more secure and efficient. Overall, the blockchain-based handover authentication protocol has the potential to improve the security and efficiency of VANETs, enabling safe and reliable communication between vehicles and infrastructure.