Industrial control security communication system and communication method

Abstract

The invention relates to an industrial control security communication system and communication method. The system comprises a cloud end and at least two control ends. The cloud comprises a certificate server, a cloud security module and an industrial control server; the control end comprises a 5G communication module, a control end safety module and an industrial control module; the industrial control server is connected with the 5G communication module, the control ends are in communication connection through a field bus, and the cloud security module and the control end security module provide password service and a security storage function; the password service function comprises random number generation, signature verification operation, encryption and decryption operation, session key generation and hash operation; the industrial control server calls the cloud security module to provide a password service function; the industrial control module calls the control end security module to provide a password service function and a security storage function; the certificate server generates and stores a public key certificate for the cloud end, and writes a public key into the control end security module; and the cloud security module stores a corresponding private key to ensure that communication between the industrial control modules is safe, reliable, simple and efficient.

Description

technical field [0001] The invention belongs to the technical field of industrial control communication, and in particular relates to an industrial control safety communication system and a communication method for ensuring safe encrypted communication between a plurality of industrial control modules on a field bus. Background technique [0002] Field bus (Field bus) is a technology applied to the production site to implement two-way, serial, multi-node digital communication between field devices and between field devices and control devices. It mainly solves the digital communication between field devices such as controllers, intelligent instruments and meters, and actuators in the industrial field, as well as the information transmission between these field control devices and advanced control systems. As the basis of the industrial data communication network, it communicates the connection between the field-level control equipment and the higher control management layer ...

AI Technical Summary

Problems solved by technology

[0003] However, while the fieldbus brings convenience, quickness and practicality to the communication between multiple industrial control modules, there are also potential safety hazards that cannot be ignored.

For example, the identity of the industrial control module is counterfeited, and the information transmitted between the industrial control modules is eavesdropped, tampered with, replayed, etc. These security threats are likely to cause major accidents, serious economic losses or other adverse effects

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