Message encryption method based on automobile bus, vehicle controller and vehicle

Abstract

The invention provides a message encryption method based on an automobile bus, a vehicle controller and a vehicle. The method includes: replacing the message with a pseudo-random sequence according to an encryption matrix, wherein the message includes verification data and application data, The verification data includes a counter, and the encryption matrix includes a plurality of pseudo-random numbers; the pseudo-random sequence is shifted according to the counter to obtain an encrypted message; the encrypted message is sent to the bus of the vehicle. The method of the present invention can prevent messages from being intercepted and cracked by criminals when they are transmitted on the automobile bus (such as CAN bus, CAN FD bus), protect vehicle information and driver privacy information, prevent the vehicle from being illegally controlled, and improve the reliability of the vehicle and security.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a message encryption method based on an automobile bus, a vehicle controller and the vehicle. Background technique [0002] With the increasing requirements for the sophistication of the control system in the vehicle system, the amount of information transmitted on the vehicle bus is also increasing, such as vehicle-related information, driver's private information and other data. These data are transmitted between various controllers of the vehicle (such as the vehicle controller, engine controller, etc.) through messages. Once the message is intercepted and cracked, criminals may illegally control the vehicle, which will affect the safety of the vehicle and the driver. [0003] In related technologies, encrypting transmitted information can effectively prevent information from being intercepted and cracked. However, these encryption technologies are usually designed based ...

AI Technical Summary

Problems solved by technology

Once the message is intercepted and cracked, criminals may illegally control the vehicle, which will affect the safety of the vehicle and driver

[0003] In related technologies, encrypting transmitted information can effectively prevent information from being intercepted and cracked. However, these encryption technologies are usually designed based on Ethernet transmission information, and the encryption is highly complex. Sometimes hardware devices are required to support encryption and encryption calculations, resulting in encryption The investment is high, limited by the cost of the vehicle, it is not applicable to the vehicle

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