Identity Authentication And Data Encryption System Of Vehicle Networking Equipment

With the rapid development of Internet of things technology,the security of the Internet of vehicles is facing an urgent form in the automotive field.In an open network environment,attackers can use generalized network attacks on vehicle terminals,roadside devices,and service application platforms,which can harm information tampering,information replay,user behavior tracking,etc.Moreover,according to the dynamic characteristics of vehicles,the communication scenarios between vehicles,vehicles and roadside equipment,vehicles and pedestrians,and vehicles and the cloud will be more complex.There are mainly two communication modes in the vehicle networking communication scenario:short-distance direct communication(PC5 interface)and cellular communication with base stations(Uu Interface).In the big data environment,the Internet of vehicles devices transmits messages to each other more frequently.It is necessary to broadcast the driving status information of vehicles,the traffic condition information published by roadside devices,the control information broadcast by privileged vehicles,and the identity information posted by vehicles on the road charging scene.The information is private data.It is necessary to establish a vehicle public key infrastructure to ensure the credibility of both communication parties and that the attacker cannot track the authorized vehicle.Four types of certificates are used on the Internet of vehicles scenario:registration certificate,application certificate,identity certificate,and pseudonym certificate.The registration certificate describes that the vehicle networking equipment has completed the authorization.The application certificate describes the content that the road infrastructure can broadcast.The identity certificate represents that the authorized vehicle has the authority to control the road infrastructure.The pseudonym certificate ensures the privacy of the user’s identity information.Through the rational use of credentials,the Internet of vehicles equipment provides the integrity of its data,confidentiality,and untraced ability of sensitive data.This paper mainly completes the following work:Firstly,build a safety certificate management system under the Internet of vehicles environment to provide a complete certificate life cycle for Internet of vehicles equipment.That is the functions of certificate download,certificate update,certificate revocation,and certificate revocation list query.Then,the communication between vehicle networking devices is designed and implemented based on the Ros2 model.Finally,the simulation test is carried out to simulate the v2x device to broadcast secure communication information,and the received signature or encrypted message can be verified or decrypted.The test shows that all functions meet the expected requirements.