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Drive-by-wire chassis CAN network encryption method

An encryption method and chassis technology, applied in the field of electrical communication, can solve the problems of CAN bus load, message delay calculation and energy consumption increase, and achieve the effect of increasing the difficulty of network cracking, enhancing network robustness, and reducing computing power requirements.

Inactive Publication Date: 2020-06-19
NANJING GOLDEN DRAGON BUS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the encryption methods used are all based on encryption and complex key management message authentication code to protect CAN communication, but this will inevitably lead to an increase in CAN bus load, message delay and calculation energy consumption

Method used

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  • Drive-by-wire chassis CAN network encryption method

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] The CAN network encryption method of the wire-controlled chassis of the present invention, the steps are as follows:

[0018] (1). The sending controller encrypts the plain text of the CAN message with the DES encryption algorithm to form a CAN encrypted message;

[0019] (2). The sending controller will split the encrypted message according to the specified rules;

[0020] (3). Simultaneously send to the receiving controller through two CAN channels;

[0021] (4). The receiving controller merges the messages according to the specified rules, and obtains the CAN plaintext through the DES decryption algorithm to realize bus control and information interaction.

[0022] The specified rules are as follows: CAN plaintext 1 frame message includes 8 bytes, and the encrypted information is 16 bytes. According to the principle of dislocation, it is divided into two me...

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Abstract

The invention discloses a drive-by-wire chassis CAN network encryption method, and the method comprises the following steps: a sending controller encrypts a CAN message plaintext by using a DES encryption algorithm to form a CAN encrypted message; the sending controller splits the encrypted message according to a specified rule; the signals are simultaneously sent to a receiving controller throughtwo paths of CAN; and the receiving controller merges the messages according to a specified rule, obtains a CAN plaintext through a DES decryption algorithm, and realizes bus control and informationinteraction.

Description

Technical field: [0001] The invention relates to a CAN network encryption method of a control-by-wire chassis, which belongs to the technical field of electric communication. Background technique: [0002] With the technological advancement of intelligent networking, automatic driving and unmanned platforms, the CAN network security requirements of the drive-by-wire chassis system are becoming more and more urgent. CAN network security plays a decisive role in the development of the automotive industry towards intelligence and automation. role. The original car chassis system by wire control adopts plain text bus communication without any security processing. Therefore, hackers can obtain the authority to control functions such as steering and braking of the car through the CAN bus, and the system has great risks. At present, the encryption methods used are all based on encryption and complex key management message authentication codes to protect CAN communication, but thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L12/40
CPCH04L12/40182H04L63/0435H04L2012/40215
Inventor 毛平生
Owner NANJING GOLDEN DRAGON BUS
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