A Security Transaction Scheme of Internet of Vehicles System Based on Dual Blockchain and SM9 Technology

With the rapid development of intelligent vehicle technology, the number of vehicles is showing an exponential growth and generating massive amounts of data. Traditional vehicle network systems have shortcomings in data protection, such as key management, data storage, and other aspects. The development of blockchain technology provides a good solution for solving such problems. This paper proposes an identity authentication chain and data storage chain based on SM9 algorithm, it is effective to solve the problems of identity authentication and data storage in vehicle networking systems. This scheme can not only improve the system security performance, but also effectively prevent single point of failure, identity forgery, data tampering, privacy disclosure and other problems caused by malicious attacks on the system. It can also meet the real-time and stability of high-speed vehicle data transmission, and have good practicability and progressiveness.