DESIGN AND IMPLEMENTATION OF BLOCKCHAIN BASED PRIVACY PROTECTION CERTIFICATION FOR INTERNET OF VEHICLES

The Internet of Vehicles aims to achieve zero traffic casualties, zero congestion and extreme communication, focusing on reliable interconnection mechanisms. With the development of intelligent transportation, information exchanges on automobile networks are frequent, and security certification with limited resources and low latency needs to be implemented to ensure the functions of the Internet of Vehicles. Therefore, this paper proposes a blockchain-based conditional privacy protection authentication method for the Internet of Vehicles. First, the dynamic revocation of illegal vehicles is realized through smart contracts, which improves the security and efficiency of the Internet of Vehicles; secondly, the proposed method is proved through theoretical deduction and logical demonstration under adaptive selection information attacks in the random oracle model. security; Finally, simulation tests on key algorithms of vehicle registration, login and authentication, and smart contract demonstrate the good feasibility, stability and efficiency of the proposed method. Experimental results show that the proposed method has significant advantages in authentication efficiency, especially suitable for resource-limited IoT, provides new ideas for communication security of IoT and can be widely used in the field of smart transportation.