A vehicle authentication and message verification method in a vehicle-mounted network environment

Abstract

The invention provides a vehicle authentication and message verification method in a vehicle-mounted network environment. The vehicle authentication and message verification method comprises the stepsthat a trust mechanism initializes a system; the vehicle-mounted unit is registered, and the roadside unit is registered; a temporary key of the roadside unit is released; a vehicle authentication stage; the trust mechanism verifies the legality of the roadside unit through the digital signature, extracts the message and verifies the legality of the automobile, the trust mechanism sends the identity identifier of the automobile to the roadside unit, the roadside unit sends the private key and the temporary main key to the automobile, and the automobile extracts the temporary main key; the automobile calculates a temporary identifier and a temporary private key, generates a traffic message and signs and broadcasts the traffic message; and when other automobiles receive the automobile broadcast message, verifying the effectiveness of the broadcast message through bilinear mapping. According to the method, the vehicle access safety in the Internet of Vehicles environment can be ensured,the safety of traffic information sent by legal vehicles is also ensured, and the method has a relatively high application value in an application environment in the mobile vehicular network environment.

Description

technical field [0001] The present invention relates to the technical field of mobile network computing, in particular to a method for vehicle authentication and message verification in a vehicle-mounted network environment, which implements vehicle authentication and message authentication based on public key cryptographic algorithms, authenticates vehicles based on bilinear Random identifier for message authentication. Background technique [0002] In recent years, with the rapid development of communication technology and microelectronics technology, many intelligent applications based on wireless communication have emerged. An intelligent transportation system built using wireless communication technology: Vehicle Networking (Vehicular Ad-hocNetwork, VANET) is getting more and more attention. Vehicle networking VANET is a special ad hoc mobile network used in the transportation field. Generally speaking, VANET mainly includes three parts: Trusted Authority (TA), On-boa...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the technical problem that the communication time between the roadside unit and the vehicle in the existing Internet of Vehicles is short and the user privacy protection cannot be realized, the present invention proposes a method for vehicle authentication and message verification under the environment of the Internet of Vehicles, and realizes the Internet of Vehicles by wireless communication technology. The safe access of vehicles in the environment protects the privacy of vehicles, improves the efficiency of vehicle authentication, and enables vehicles to transmit various information safely and efficiently in the VANET of the Internet of Vehicles

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