Communication method and device, ECU, vehicle and storage medium

Abstract

The invention discloses a communication method and device, an ECU, a vehicle and a storage medium, and relates to the technical field of vehicles. When the communication state information of the first ECU for the second ECU is first state information, sending the first state information to the second ECU; if a communication verification request sent by the second ECU based on the first state information is received, verification information is sent to the second ECU; feedback information sent by the second ECU based on the verification information is received; when the feedback information conforms to a preset rule, the communication state information is changed into second state information, an encryption key is sent to the second ECU, and the encryption key is used for encrypting message information in the communication process of the first ECU and the second ECU. Thus, the messages in the communication process can be encrypted through the encryption key between the ECUs, the safety is improved, communication verification is carried out before the encryption key is unified between the ECUs, communication can be carried out after communication verification, the encryption key is unified, and the communication safety between the ECUs is improved.

Description

technical field [0001] The present application relates to the technical field of automobiles, and more specifically, to a communication method, device, ECU, vehicle and storage medium. Background technique [0002] With the increasing degree of vehicle interconnection, more and more attention is paid to the safety of in-vehicle communication. In related technologies, most of the electronic control units (Electronic Control Unit, ECU) in the car are based on the Controller Area Network (Controller Area Network, CAN) or the variable rate CAN (CAN with Flexible Data-Rate, CAN -FD) to communicate. Usually, data transmission between ECUs is carried out by broadcasting, but almost all of them are transmitted in plain text, and the ECU’s verification method for the received data information is also relatively simple, which is easy to be deciphered by a third party, who can decipher the communication in the car After the agreement, the corresponding message information is simulate...

AI Technical Summary

Problems solved by technology

Usually, data transmission between ECUs is carried out by broadcasting, but almost all of them are transmitted in plain text, and the ECU’s verification method for the received data information is also relatively simple, which is easy to be deciphered by a third party, who can decipher the communication in the car After the agreement, the corresponding message information is simulated to control the vehicle. Therefore, the safety of in-vehicle communication may be reduced, which will affect the personal safety of the driver.

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