27-07-2011 дата публикации
Номер: CN0102137095A
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The invention discloses an industrial control system data exchange safety protection method and a system and a device thereof. The method comprises the following steps: the receiving end of an industrial control system extracts a payload and a complete check code from a compound control message, the complete check code is a signature or summary information, and the summary information is generated according to the payload and a secret; according to the payload, new summary information is acquired; and according to the complete check code, a public key or a secret, the new summary information is subject to the complete verification. In the technical field of the invention, data source certification, complete protection and replay attack prevention are carried out to interactive messages, the control center (main station) and the controlled terminal (substation) of an industrial control system can carry out verification to the identity of a message sender, so that the condition that malicious ...
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