Internet of vehicles V2I bidirectional authentication method based on SM9

Abstract

The invention discloses an Internet of Vehicles V2I bidirectional authentication method based on SM9, and belongs to the field of wireless communication security and authentication protocols of the Internet of Vehicles. The method comprises the following steps: establishing a VANET communication system comprising a trusted third party TA, a server, a roadside unit RSU and a vehicle V, carrying out parameter initialization on the VANET communication system through an SM9 cryptographic algorithm, and then generating a system key and an identifier hid by utilizing the initialized parameters; inputting an identity (ID) of an RSU into a PUF module built in the RSU, outputting response excitation Y, and pre-storing the ID of the RSU and an excitation-response pair (ID, Y) in a vehicle V; realizing bidirectional authentication of the RSU and the V through three times of interactive communication by utilizing the identifier hid of the main private key and the ID and (ID, Y) of the RSU; after the bidirectional authentication is completed, enabling the VANET communication system to perform multi-vehicle communication in the moving process. According to the invention, the communication security is improved, the interaction frequency is reduced, the communication efficiency is improved, and the system well adapts to rapid movement of multiple vehicles in an Internet of Vehicles environment.

Description

technical field [0001] The invention belongs to the field of wireless communication security and authentication protocols of the Internet of Vehicles, and specifically refers to an SM9-based V2I two-way authentication method for the Internet of Vehicles. Background technique [0002] Nowadays, the development of the automobile industry is no longer simply satisfied with the needs of travel, but more consideration is given to the user's driving experience, information services and entertainment enjoyment, especially the combination of vehicles and the rapidly developing network, which provides the best solution for realizing the needs of users. This opportunity has promoted the rapid development of VANET (Vehicular Ad-hoc NETwork, Vehicle Networking). [0003] VANET generally includes four entities: trusted third party TA (Trusted Authoriy, authentication center), server, RSU (Road Side Unit, roadside unit) and V (vehicle, vehicle). As a fixed static node, RSU is generally d...

AI Technical Summary

Problems solved by technology

However, there are still some security problems in the current Internet of Vehicles authentication protocol, ignoring the security threats brought about by the improvement of hardware and communication performance. Some schemes are based on mathematical problems that already have security threats; It is caused by the theft of identity information, or it may be caused by the hijacking of equipment

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