Smart Contract-Based Blockchain for Delegation of Trustworthiness Between Intra-Communicating Vehicles in VANET

The increasing complexity and connectivity of modern vehicular networks underscore the necessity for efficient authentication mechanisms to ensure secure and reliable communication among vehicles. This paper introduces a novel approach using smart contract-based blockchain technology for trust delegation among vehicles in VANETs. Addressing challenges in 5G-enabled vehicular networks, the proposed scheme aims to optimise authentication processes, reducing computation and communication costs while enhancing handover mechanisms. Through comprehensive analysis, the scheme's security robustness against potential active attacks is evaluated, demonstrating its effectiveness in reducing costs. The numerical analysis reveals a remarkable reduction of computation and communication costs by 66% and 81 %, respectively, showcasing the superior efficiency of the proposed smart contract-based blockchain solution compared to conventional authentication methods.