Design And Implementation Of Security Audit System For Intelligent Vehicle

With the rapid development of artificial intelligence technology,the intelligent lifestyle in the future is more and more clearly displayed in front of people.Under This background,the car is the most indispensable means of transportation in people's lives,and it has become the most popular object in this wave of technology.The smart car breaks the traditional independent mode of the car,and realizes the communication between the car and the Internet,between the car and the car,and between the car and the road sensing unit through the Internet technology.Then comprehensively analyze the various information received to realize intelligent computer driving,freeing people from boring driving.However,various security has also been brought about by the internet of cars.This paper studies the security threats faced by smart cars and the existing security defense means for smart cars.This paper analyses the shortcomings of the existing safety defense schemes for intelligent vehicles,and puts forward a safety audit for Intelligent Vehicles Based on the characteristics of safety audit.It effectively remedies the shortcomings of other schemes.The main research work is as follows:(1)Learned the basic theoretical knowledge of smart cars and security audits.Threat modeling of smart cars,summarizing the various attack surfaces of the risk events that smart cars may face.At present,the research on smart car safety mainly includes three methods: vulnerability mining,intrusion detection,and security protocol formulation.The advantages and disadvantages of these three schemes are compared respectively.The security audit scheme is proposed for its shortcomings,and the role of the security audit scheme is analyzed.(2)The specific safety audit scheme is designed from three aspects of smart car.A state-based risk event audit scheme is designed for the central control system,which can audit the control instructions issued by the system and find out the abnormal instructions.Then,deep packet detection is carried out for V2 X network message set,and a comparative lie detection scheme is designed to further audit the authenticity of message set information.Finally,six feature models are designed according to the characteristics of CAN network data frames.(3)Based on the previous research,the intelligent car safety audit system was designed.The detailed design and implementation of each module are carried out.The log storage module is designed with a front-end log receiving queue,and a dynamic format is designed for the audit log.These optimized designs can effectively improve the accuracy and efficiency of the system.Finally,the audit system is strictly and completely verified and tested,and the system is repaired and optimized based on the test results.According to the above work content and test results,the security audit system designed for smart cars can effectively discover the risk events in smart cars and provide data support for security personnel to evaluate the security of smart cars.