Research And Implementation Of Intelligent Connected Vehicle Safety System Based On C-V2X System

The popularity of automobiles has brought comfort and convenience to our lives.The importance of automobiles to people’s lives and human society is self-evident.With the rapid development of intelligent connected cars in recent years,the traditional automobile industry will usher in a new era.At the same time,China regards C-V2X technology as the main technical route of connected vehicle V2X technology,which has promoted the further development of intelligent transportation and intelligent connected car industry,attracting the attention of many enterprises and researchers.Intelligent connected cars are equipped with advanced on-vehicle sensors,controllers,actuators and other devices,and integrate V2X technology to realize the sharing of information between cars,people,cars,roads,and clouds,so that cars can be more secure,comfortable,and energy efficient Efficient driving.However,in the process of information interaction,connected cars not only exchange ordinary data information,but also send private data containing identity information and geographical location.Therefore,a comprehensive information security protection mechanism needs to be established to protect the vehicle during communication.Security.The thesis first analyzes the security risks and requirements of the LTE-V2X IoV system,and introduces the existing security mechanisms.Secondly,the thesis designs and implements an IOV security certificate management system.The system adopts the method of overall distribution and local concentration deployment,and uses national secret algorithms and customized certificate formats to ensure the security of communication data at the application layer and the exclusive security between connected vehicles.Subsequently,the thesis designed and implemented the CA construction,terminal identity authentication,certificate generation,issuance,application,management and revocation of Internet of vehicle security certificate management system,and also designed and implemented the secure communication process between the cloud and the terminal,the secure communication process between the terminal and the terminal,and mutual trust between the terminals in detail.Finally,the thesis conducted functional tests on the main functional modules of the Internet of Vehicles Security Certificate Management System,performed performance tests on the message signature verification link of the Internet of Vehicles terminal,and proposed three optimization methods aiming at the verification strategy of IoV terminals.