| In recent years,unmanned driving,Internet of things,5G and other new technologies have been continuously applied to traditional cars.Cars are no longer a single traditional means of transport,and traditional cars are gradually developing to the new four modernizations.Safe,intelligent,reliable,low-carbon and environmentally friendly connected vehicles are bound to be the common development trend of the global automobile industry.However,at present,there are a large number of behaviors in the automobile industry by forging whole vehicles or auto parts,which bring great losses to automobile manufacturers and people’s life and property safety.At the same time,it also reflects a major automotive safety problem.The original vehicle identity authentication system--the vehicle frame number,engine number and other physical attributes of the number can not meet the needs of future vehicle information management.At present,there are several commonly used methods for vehicle identity authentication,among which the authentication method based on group signature is not mature and has not been applied in practice,while the authentication method based on IBC identity identification is still in the theoretical research stage.At present,there is no complete digital identity management scheme for the whole vehicle and its parts,and the automobile safety problem is becoming increasingly prominent.In summary,this thesis proposes the twolevel vehicle identity authentication based on traditional PKI,which can safely and effectively manage the digital identity of the whole vehicle and its parts,and improve the security level of the automobile identity authentication.In this thesis,on the premise of realizing the general management function of connected automobile,the digital certificate system for automobile is used to further improve and perfect the digital identity authentication function of automobile and key electronic components.Finally a digital identity management system for automobile is completed.In this thesis,the automotive digital identity management system is designed mainly as follows:（1）Demand analysis and function design of the digital identity management system of the connected vehicle are carried out.And the digital identity of the vehicle itself and the main electronic parts is effectively recognized and managed.Combined with the main purpose of this thesis,design a set of digital identity authentication management scheme for the vehicle and parts,including connected vehicle service platform,vehicle-oriented digital certificate system and connected vehicle terminal,effectively improve the information security of the vehicle terminal.（2）Combined with the above research,the realization of automotive digital identity management system is completed.This thesis uses the wild fire I.MX 6ULL Mi Ni development board and Qiming STM32F407ZGT6 development board MCU industrial control board to simulate the connected vehicle terminal,and carries out a series of development and debugging work on the above two embedded development board.The project completes the background design and front-end interface design in the server.Then the project completes the joint adjustment between the service platform and embedded development board.（3）Finally,a comprehensive test of the system is carried out,and after the end of the test,the deficiencies of the system and improvement suggestions are put forward,mainly in hardware security chip,key management,certificate update,offline authentication. |
