File transmission method using industrial control system

Abstract

The invention discloses a file transmission method using an industrial control system. The file transmission method comprises the following steps: firstly, writing a set IP address into a computer ora PLC through an assembly language; then, adding a downloaded main program as a starting item in a registry, meanwhile, releasing a drive file and a verification file, generating a digital signature and verifying whether the digital signature exists or not, and sending a corresponding first response and a corresponding second response to an agent side; secondly, searching all servers in a local area network by adopting a square increasing exploration mechanism, and avoiding servers outside the local area network; meanwhile, dynamically selecting a transmission file, and transmitting the transmission file to a corresponding proxy server by adopting a dynamic threshold signature algorithm and a dual encryption method; and finally, copying file header information twice, unloading the main program at the same time, and starting a plurality of threads through a timing system to cause process congestion, so as to improve the security of the equipment.

Description

technical field [0001] The invention relates to the technical field of network space security, in particular to a file transmission method using an industrial control system. Background technique [0002] With the rapid development of social informatization, traditional industrial control is also aiming at combining computer technology and gradually developing towards networking. Through the comprehensive interconnection of people, machines and things, it promotes the formation of a new industrial production and manufacturing system. At the beginning of the design of the industrial control system, security requirements such as confidentiality, integrity, and identity verification were not considered. The control of authorized access devices was not strict, the configuration and maintenance were insufficient, and the encryption algorithm was outdated, which led to various security risks. At the same time, personal computers based on the Windows platform are also widely used i...

AI Technical Summary

Problems solved by technology

[0003] The number of industrial control systems included in CNVD is increasing year by year, and the repair of these vulnerabilities is too difficult, because the normal operation of the industrial line must be guaranteed during the repair process, and at the same time, it must be ensured that the normal production will not be affected due to compatibility issues after the repair of the vulnerabilities

The mechanism based on the virus database detection and killing also has limitations on the industrial Internet. Some plug-and-play storage devices such as U disks make it easier for viruses to spread, leading to security threats such as loss, leakage, and tampering of industrial data. , reducing the security of the device

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