Information security method of industrial control network and security function block
An industrial control network and security function technology, which is applied in the field of security processing methods and security control modules of industrial control networks, and can solve the problems that are difficult to meet the requirements of heterogeneity, distribution, real-time, reliability and stability of industrial control networks. and other issues to achieve the effect of satisfying heterogeneity, ensuring security, and meeting security requirements
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[0010] figure 1 The schematic diagram of the safety function block model is shown. The safety function block includes the safety function block input interface, output interface, safety algorithm module, execution control table, and internal data storage. When the safety service event arrives, the EPA safety trigger event passes through the safety function input The interface inputs the input terminal of the execution control table, and the EPA data flow is directly input into the security algorithm module, and the execution control table (ECC) calls the preset security algorithm strategy. The stream unsigned char (unsigned byte stream) is processed by the encryption / decryption algorithm to complete the encryption of the input data, and the formed EPA encrypted data stream is stored in the internal data storage, and the EPA encrypted data stream is output through the output interface of the security algorithm module. The output interface buffers and processes the encrypted res...
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