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ENCRYPTION METHOD FOR APPLICATION DATA UNIT IN WATER CONSERVANCY INDUSTRIAL CONTROL SYSTEM
ENCRYPTION METHOD FOR APPLICATION DATA UNIT IN WATER CONSERVANCY INDUSTRIAL CONTROL SYSTEM
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机译：水利工业控制系统中应用数据单元的加密方法
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摘要
Disclosed is an encryption method for an application data unit in a water conservancy industrial control system. By means of installing an encryption proxy program between an application program of the water conservancy industrial control system and a field bus communication program, transparent encryption of the application data unit is realized. In the encryption proxy program, an encryption scheme based on a domestic symmetrical encryption algorithm is used to realize the functions of control device identity verification, field bus communication data secrecy, and protocol packet integrity checking, such that an unauthorized illegal device is effectively prevented from monitoring, intercepting and tampering with data monitoring and control information on a channel of the field bus, a high resistance to man-in-the-middle attacks is provided, and security risks caused by invasion into the channel of the field bus in a water conservancy automation control system are reduced. The encryption proxy program can seamlessly access current existing water conservancy industrial control systems, and has a high device compatibility and universality.
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