Secure industrial control system communication method
An industrial control system and communication method technology, applied in transmission systems, electrical components, etc., can solve problems such as lack of authentication, authorization and encryption and other security protection mechanisms, industrial control systems cannot operate normally, and system security cannot be guaranteed. The effect of ensuring efficiency and practicability, protecting integrity and confidentiality, and enhancing security protection capabilities
Active Publication Date: 2015-07-29
SHENYANG ZHONGKE AOWEI SCI & TECH CO LTD
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Problems solved by technology
Although these protocols have been widely used, they lack security protection mechanisms such as authentication, authorization, and encryption because they were originally designed for industrial control systems in isolated environments without considering security.
As the third-generation industrial control system tends to be networked and intelligent, general communication protocols will not be able to guarantee the security of the system. Malicious attackers can steal, tamper and forge data in the system, and even modify device parameters to make the entire system Industrial control systems are not functioning properly
Method used
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Embodiment Construction
[0038] The present invention will be further described in detail below in conjunction with the examples.
[0039] The present invention designs a communication protocol for a secure industrial control system based on a three-layer network model, which consists of a data link layer, a secure transport layer and an application layer, such as figure 1 .
[0040] Communication protocol of the present invention comprises the following steps:
[0041] (1) The main site application layer completes the encapsulation of control commands and data. The system administrator issues remote device status change commands through the human-computer interaction client, such as changing the engine speed and changing the sensor acquisition frequency;
[0042] (2) The secure transport layer of the main site receives the request message or response message from the application layer, securely encapsulates the message, encrypts the data and attaches a message authentication code, and transmits it ...
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The invention relates to a secure industrial control system communication method which includes the steps: packaging commands / data into an application layer message by an application layer of a master site; receiving and then encrypting the application layer message and packaging the application layer message into a transmission layer message by a secure transmission layer; converting the received transmission layer message into a data link layer frame and transmitting the data link layer frame to a slave site by a data link layer; receiving the commands / data by the slave site, firstly un-packaging the commands / data into the transmission layer message and transmitting the transmission layer message to the secure transmission layer by the data link layer; decrypting and un-packaging the transmission layer message into the application layer message and transmitting the application layer message to the application layer by the secure transmission layer; extracting the message by the application layer to obtain the commands / data. Communication data security can be effectively ensured, data confidentiality is ensured by encryption, message authentication codes are verified to determine whether the data are tampered or not, and the method is excellent in practicability.
Description
technical field [0001] The invention relates to a safety method for data communication between devices in an industrial control system, belonging to the technical field of network information safety. Background technique [0002] With the continuous advancement of the integration process of industrialization and informationization, it will become an inevitable trend to widely apply electronic information technology to all aspects of industrial production. The industrial control system will also gradually break through the closed nature of the past, and adopt standard and common communication protocols and hardware and software systems, thus facing traditional information security threats such as viruses, Trojans, hackers, and denial of service. Moreover, since industrial control systems are mostly used in important national infrastructure industries such as electric power, transportation, petrochemical industry, and nuclear industry, the social impact and economic losses cau...
Claims
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IPC IPC(8): H04L29/06
Inventor 肖琳祝烈煌杨震杜方孙金
Owner SHENYANG ZHONGKE AOWEI SCI & TECH CO LTD