An Encryption Method Based on Electrical System of Construction Machinery

Abstract

The invention provides an encryption method based on an engineering machinery electrical system, which comprises an encryption system, the encryption system comprises a controller, an industrial personal computer and a data converter which communicate with one another through can bus communication, and the encryption method comprises the following steps: a) after the system is started each time, the controller firstly sends a query instruction; B) after the industrial personal computer detects a controller inquiry instruction, keeping the inquiry instruction, verifying that inquiry instructiondata are legal and complete, generating a reply instruction, and sending the reply instruction to the controller; And c) after comparing the new password of the control calculation with a reply instruction, generating a flag bit and sending the flag bit to the CAN bus. The method can be well connected with a mainstream engineering machinery electrical control system, an effective encryption algorithm is added, flag bits are generated and mixed in a large amount of bus communication data, an electrical system encryption function is well achieved, and the method is safe and reliable.

Description

technical field [0001] The invention relates to the field of electrical system encryption, in particular to an encryption method based on the electrical system of engineering machinery. Background technique [0002] With the development of the construction machinery industry, higher requirements are put forward for the electrical control system, such as: higher degree of automation, faster execution speed, safer system, more convenient human-computer interaction, better stability and so on. Based on the above requirements, it is necessary to use a controller with better performance, a more accurate sensor, and a transmission method with a faster communication rate. [0003] Many domestic construction machinery manufacturers have developed new products suitable for various working conditions and environments. At the same time, according to the development requirements of customers and themselves, especially higher requirements are put forward for the electrical control system...

AI Technical Summary

Problems solved by technology

[0003] Many domestic construction machinery manufacturers have developed new products suitable for various working conditions and environments. At the same time, according to the development requirements of customers and themselves, especially higher requirements are put forward for the electrical control system of construction machinery, and a large number of high-performance electronic control systems The use of hardware also brings certain security risks, which damages the interests of stakeholders such as users and manufacturers.

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