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CAN bus encryption method and device, engineering machinery and storage medium

A technology of CAN bus and encryption method, which is applied in bus network, secure communication device, and key distribution, and can solve problems such as low node data processing capacity, difficult encryption and decryption algorithms, and different complexity of bus nodes

Active Publication Date: 2021-07-09
SANY AUTOMOBILE HOISTING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The complexity of CAN bus nodes is different, and some nodes have low data processing capabilities, making it difficult to perform complex encryption and decryption algorithms
In related technologies, in order to improve the running speed of nodes, only fixed secret keys are used to encrypt data in conjunction with the characteristics of plaintext data frames, resulting in low security.

Method used

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  • CAN bus encryption method and device, engineering machinery and storage medium
  • CAN bus encryption method and device, engineering machinery and storage medium
  • CAN bus encryption method and device, engineering machinery and storage medium

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Embodiment Construction

[0048] In order to make the above objects, features, and advantages of the present invention, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0049]It will be noted that the specifiers and claims of the present invention and the terms "first", "second", "second", or the like are used to distinguish the similar object without having to describe a particular order or ahead order. It should be understood that the data such as use can be interchanged in place so that the embodiments of the invention described herein can be implemented in the order other than those illustrated or described herein.

[0050] In the description of the present invention, it is to be noted that the term "setting", "mount", "connected", "connection", unless otherwise expressly specified and defined, "Connect" should be a generalized understanding, for example, can be fixed connection, It can be a detachable connection, or inte...

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Abstract

The invention provides a CAN bus encryption method and device, engineering machinery and a storage medium. The CAN bus encryption method comprises the following steps: acquiring a first fixed key and a random code generated by a CAN main control node; generating a second fixed secret key matched with the CAN node according to the first fixed secret key and a preset node parameter of the CAN node; generating a first data frame secret key matched with the CAN node according to the random code and the second fixed secret key; and encrypting a data frame to be sent by the CAN node according to the first data frame secret key. The invention has the beneficial effect that the security after data encryption can be improved under the condition of ensuring the running speed of the CAN node.

Description

Technical field [0001] The present invention relates to the field of data encryption, and in particular, there is a CAN bus encryption method, a device, a construction machinery, and a storage medium. Background technique [0002] The CAN bus is widely used in automotive and engineering machinery and other industries to use as data transmission, and data security in data transmission is very important. Under normal circumstances, data communication needs to be encrypted. [0003] The CAN bus node is different, and some node data processing capabilities are low and difficult to perform complex encryption and decryption algorithms. In the relevant technique, in order to improve the operating speed of the node, in the data encryption, only the feature of the fixed key is used in conjunction with the characteristics of the plaintext data frame, and the security is low. Inventive content [0004] The problem solved by the present invention is how to improve data encryption after ensu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L9/08H04L12/40
CPCH04L63/0428H04L63/06H04L9/0869H04L12/40006H04L2012/40215
Inventor 邓连喜
Owner SANY AUTOMOBILE HOISTING MACHINERY
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