Intrusion detection method and device for in-vehicle network based on message cycle

Abstract

The invention provides an in-vehicle network intrusion detection method and device based on the message period. The method comprises steps of: acquiring time attributes of a plurality of periodic message IDs output from one or more electronic control units on the internal network bus of a vehicle without communicating with the outside world; calculating a time characteristic corresponding to the electronic control unit based on the time attribute; calculating time characteristics corresponding to the electronic control units based on the time attributes; collecting the corresponding attributes of the conventional periodic message IDs output by the electronic control units identified by the time characteristics when the vehicle communicates with the outside world and calculating the recognition errors of the corresponding attributes; and determining whether the conventional periodic message is abnormal or not according to the recognition errors and the preset threshold. The method and the device can detect whether the in-vehicle network is illegally intruded or not, so as to ensure the safety of the driver and the passenger.

Description

technical field [0001] The present invention relates to the field of network security, in particular to a vehicle internal network security detection method, specifically a message cycle-based in-vehicle network intrusion detection method and device. Background technique [0002] In recent years, vehicles have shown a trend of intelligence and networking. More and more electronic control units (ECU, Electronic Control Unit) are installed inside the vehicle to replace the original mechanical structure. With the increase of attached sensors, the software control system of intelligent components becomes more complex; with the increase of external communication interfaces, networked components also introduce potential network security threats. The ECU installed in the vehicle can be remotely hacked through the network. This kind of intrusion may cause the vehicle to malfunction, thereby threatening the life safety of the driver or passengers. How to avoid or mitigate these netw...

AI Technical Summary

Problems solved by technology

[0006] In view of this, the technical problem to be solved by the present invention is to provide a vehicle network intrusion detection method and device based on the message cycle, which solves the problem that the existing technology cannot detect whether the vehicle network is illegally invaded by the outside

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