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Measurement mechanism-based credible PLC starting method

A credible and mechanism technology, applied in the program control, program control, electrical program control and other directions in the sequence/logic controller, can solve the problem that the research on the trusted boot of embedded devices is in its infancy, so as to ensure the trusted boot. Effect

Active Publication Date: 2017-05-31
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Generally speaking, the research on trusted security of industrial control system terminals has achieved some phased results, but the research on trusted startup of embedded devices is still in its infancy.

Method used

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  • Measurement mechanism-based credible PLC starting method
  • Measurement mechanism-based credible PLC starting method
  • Measurement mechanism-based credible PLC starting method

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Embodiment Construction

[0041]In order to make the object, technical solution and advantages of the present invention clearer and clearer, the present invention will be described in further detail below with reference to the accompanying drawings and examples, but the present invention is not limited to these examples.

[0042] PLC (Programmable Logic Controller) is a programmable logic controller that uses a type of programmable memory for its internal storage of programs, execution of user-oriented instructions such as logic operations, sequence control, timing, counting and arithmetic operations, and Control any type of machinery or production process via digital or analog input / output.

[0043] According to the structure, programmable logic controllers are divided into two types: integral type and modular type; according to the application environment, they are divided into two types: on-site installation and control room installation; bit, 64 bit, etc. From the application point of view, usuall...

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Abstract

The invention discloses a measurement mechanism-based credible PLC starting method. The measurement mechanism-based credible PLC starting method comprises the following steps: performing firmware verification initialization; reading firmware information for calculating PLC; performing one-by-one verification and storage; performing operating stating stage verification. The method provided by the invention adopts an industrial-grade chip with a trusted function as a hardware calculation core, the PLC extends the Flash bus to be loaded by the hardware of the method provided by the invention, the hardware of the method provided by the invention identifies necessary starting information, the necessary starting file of the PLC system is subjected to integrity verification by an integrity verification method, and the PLC system is guaranteed to be in a credible state after being started. By the method, a safe and credible industrial control system operating environment can be built on the basis of guaranteeing the accuracy and the practicability of terminal equipment safety.

Description

technical field [0001] The invention relates to the application technical field of computer programmable logic controllers, in particular to a trusted PLC startup method based on a measurement mechanism. Background technique [0002] Industrial Control Systems (ICS) are composed of various automation control components and process control components for real-time data acquisition and monitoring. Its components include Supervisory Control and Data Acquisition System (SCADA), Distributed Control System (DCS), Programmable Logic Controller (PLC), Remote Terminal Unit (RTU), Intelligent Electronic Devices (IED), and the interface technology that ensures the communication of each component . [0003] As of September 10, 2015, China National Information Security Vulnerability Database (CNNVD), Common Vulnerabilities&Exposures (CVE), The Industrial Control Systems Cyber ​​Emergency Response Team (ICS-CERT US Industrial Control System Emergency Response Team) publicly released info...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/44G06F21/44
CPCG06F9/4401G06F21/44G06F9/44589G06F21/575G05B19/05G06F9/4416G06F8/61G05B19/0426
Inventor 曾鹏尚文利赵剑明万明乔全胜
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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