Industrial control safety communication system and method based on 5G

Abstract

The invention relates to an industrial control safety communication system and method based on 5G. The system comprises a cloud and at least two control terminals. The cloud comprises a certificate server, a cloud security module and an industrial control server; the control terminal comprises a 5G communication module, a control end safety module and an industrial control module; wherein the industrial control server is in communication connection with the 5G communication module through a 5G network, the control end is connected through a field bus, the cloud security module and the controlend security module provide password and storage services, and the password services comprise random number generation, signature verification operation, encryption and decryption operation, session key generation and hash operation; the industrial control server calls a cloud security module password service, and the industrial control module calls a control end security module password and a storage service; the certificate server generates a public key certificate for the cloud and the control terminal, and writes a public key of the public key certificate into the control terminal securitymodule; and the cloud security module and the control end security module store corresponding private keys to realize identity authentication and group security encryption communication between the control modules.

Description

Technical field: [0001] The invention belongs to the technical field of industrial control communication, and specifically relates to a 5G-based industrial control safety communication system and method for ensuring safe encrypted communication between multiple 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 in the produc...

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

At the same time, in the industrial control environment, the storage resources and processing capabilities of the industrial control modules themselves are limited (such as data and communication processing capabilities, storage capabilities, etc.), and in order to meet the needs of flexible production, the industrial control modules between The communication relationship may change at any time. Therefore, if you want to store all possible public key certificates or public keys of all industrial control modules that may have a communication relationship with it in an industrial control module, it will cause storage burden and inflexibility

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