Security access and secret communication method of vehicle-mounted remote diagnostic services

Abstract

The invention discloses a security access and secret communication method of vehicle-mounted remote diagnostic services. An electronic control unit gateway is taken as a bridge, and bidirectional authentication of the gateway and a diagnostic tool, shared key negotiation and a gateway issued group dialogue secret key are taken as a framework and an AES (Advanced Encryption Standard) encryption and HMAC (Hash Message Authentication Code) authentication algorithm facing a CAN (Controlled Area Network) are taken as the basis to establish security connection between an electronic control unit and the diagnostic tool. By adopting the security access and secret communication method of the vehicle-mounted remote diagnostic services, provided by the invention, a security connection mechanism of the CAN and remote applications can be provided, and illegal access to vehicle-mounted parts by the remote diagnostic services can be prevented.

Description

technical field [0001] The invention relates to the field of vehicle-mounted network security communication methods, in particular to a secure access and confidential communication method for vehicle-mounted remote diagnosis services. Background technique [0002] With the development of information technology and mobile communication technology, traditional cars are evolving towards intelligence and networking. The in-vehicle network is connected upwards to the Internet of Vehicles and the Internet. The useful information brought by network integration will help improve the physical safety of passengers, facilitate driving for drivers, and improve urban traffic. However, more and more vehicles are connected to the Internet, and the security risks of the Internet are gradually penetrating into the vehicle network, which may bring serious security consequences. Especially in the remote diagnosis service, the diagnostic tool DT (Diagnostics Tool) uses the Internet to connect ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a safe access and confidential communication method for vehicle-mounted remote diagnostic services. Based on the particularity of the CAN network, a secure connection mechanism between the CAN network and remote applications is provided to solve the problem of illegal access to vehicle-mounted components by remote diagnostic services. The problem

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