Research Of Cryptography Application Technology In Security Communication Of Internet Of Vehicles

V2X aims to achieve road safety,traffic efficiency,and information services through the interaction of information between vehicles and the outside world.The Internet of Vehicles is also called vehicle-organized network(VANET).During the communication process,it will face the threats of information interception and counterfeiting attacks.These threats will greatly reduce the availability of the Internet of Vehicles.Therefore,the security of Internet of Vehicles communication must be considered.The main work of the thesis includes the following points:1.The current status of secure communication and its cryptographic application technology for the Internet of Vehicles at home and abroad is studied,including the currently released relevant standards,relevant laws and regulations,and theoretical and practical research results.The threats faced by V2 X communication are summarized,and the requirements for V2 X secure communication are put forward.2.Based on the research of cryptographic application technology in V2 X communication at home and abroad,combined with specific vehicle network application scenarios,a set of cryptographic application systems for V2 X communication is designed,including digital certificate system,vehicle terminal cryptographic application technology,roadside device cryptographic application technology and security management cryptographic application technology.3.Based on the research and analysis of the threats faced by the Internet of Vehicles and the security requirements of Internet of Vehicles communications,a V2 X secure communication protocol stack with security protection is designed on the basis of reference and reference to mature communication protocols and existing communication protocols of Internet of Vehicles.The V2 X secure communication protocol stack is divided into an application layer,a V2 X encryption protocol layer,a network layer,and an access layer.Among them,the V2 X encryption protocol layer is the security guarantee of the protocol stack: the data is hashed to ensure the integrity of the message;the data is encrypted and decrypted to ensure the confidentiality of the communication;the certificate is issued to verify the identity to ensure the authenticity of the identity.4.The V2 X secure communication protocol stack is implemented In the simulation environment,including the application layer,the V2 X encryption protocollayer,and several interfaces of the network.The functions of interfaces and the calling relationship between interfaces are explained.5.Combined with the vehicle networking communication application scenario,the test and verification of the V2 X secure communication protocol stack is designed and implemented.The test verification is divided into two aspects of the V2 X secure communication protocol and cryptographic application technology.The tests include functional tests and performance tests,and finally the test results are analyzed.In short,this article studies the current status of IoV communication technology,and based on the existing IoV communication protocols,combined with the IoV safety communication requirements and the vehicle network application scenario,designs a V2 X secure communication protocol stack,and the functions and Performance is tested.The test results show that the protocol stack has certain functions such as communication confidentiality,message integrity,and network availability,and has a certain reference role for the realization of vehicle networking communication of actual physical equipment.