Controller regional network bus safety communication method, device and system

A technology of secure communication and local area network, applied in the field of controller area network bus security communication, can solve the problem of inability to directly apply the CAN bus communication system, etc., and achieve the effects of low transmission overhead, resistance to eavesdropping attacks, and resistance to replay attacks

Active Publication Date: 2018-12-07
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the use of non-standard CAN transceiver hardware, the CAN transceiver hardware needs to be modified, which cannot be directly applied to the existing CAN bus communication system

Method used

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  • Controller regional network bus safety communication method, device and system
  • Controller regional network bus safety communication method, device and system
  • Controller regional network bus safety communication method, device and system

Examples

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Embodiment Construction

[0057] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

[0058] image 3 A CAN bus safety communication system provided by the embodiment of this application. refer to image 3As shown, the CAN bus safety communication system includes a gateway ECU and at least one CAN bus connected to the gateway ECU; wherein, at least one CAN bus ECU is connected to each CAN bus. Both the gateway ECU and the CAN bus ECU have a processor for arithmetic processing, an internal storage space for storing commands, and a transceiver for sending and receiving information. Wherein, the CAN bus ECU may generally include a group of transceivers connected to a CAN bus. The gateway ECU may include multiple sets of transceivers and be connected to multiple CAN buses. The CAN bus can be understood as the transmission channel of the CAN bus safety communication system, and the gateway ECU can send and receive in...

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Abstract

The present invention provides a controller regional network bus safety communication method, device and system which can effectively withstand attackers' eavesdropping, injection and attack replay. Agateway ECU (Electronic Control Unit) generates a random number and sends the random number to at least one CAN (Controller Area Network) bus ECU. A first CAN bus ECU obtains the random number sent by the gateway ECU and generates a first information authentication code based on secret keys of a first CAN identifier, the random number sent by the gateway ECU, a counting value of the first CAN identifier and data of a first CAN message. The first CAN bus ECU performs encryption operation based on the secret keys of the first CAN identifier and a second CAN message to obtain a first encryptionoperation result and perform equal length encryption operation for the first encryption operation result, the first information authentication code, the counting value of the first CAN identifier andthe data of the first CAN message so as to obtain the first CAN message with encryption authentication and send the first CAN message with encryption authentication.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular to a controller area network (Controller Area Network, CAN) bus security communication method, device and system. Background technique [0002] The CAN communication protocol defines the data transmission standard of the physical layer (Physical Layer, PHY) and the data link layer (Data LinkLayer, DLL). It is a broadcast type transmission channel and is widely used, for example, it is widely used in In-car communication. [0003] In the CAN communication network architecture for communication based on the CAN communication protocol, a central gateway electronic control unit (Electronic Control Unit, ECU) connects multiple ECUs through the CAN bus system, wherein the CAN bus system may include multiple CAN buses, each Multiple ECUs in the CAN bus are connected to each other through other CAN buses and the central gateway ECU, and send and receive their own servic...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L12/40
CPCH04L12/40104H04L63/0428H04L63/08H04L63/1466H04L2012/40215H04L9/32H04L63/123H04L12/4625H04L9/0819H04L9/0869H04L12/40H04L2012/40273
Inventor 林孝盈魏卓沙庆迪唐康
Owner HUAWEI TECH CO LTD
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