Electric power information protection method and system based on secure communication protocol

Abstract

The invention belongs to the field of power systems, and provides a power information protection method and system based on a secure communication protocol, and the method comprises the steps: building a hierarchical secure communication protocol which comprises a data confusion layer, an encryption and verification layer and a transmission optimization layer; an acquisition device registers and obtains power grid topological structure information, the acquisition device adjusts the size of an obtained data packet in the data confusion layer according to the power grid topological structure information, and the adjusted data is encrypted in the encryption and verification layer; the intermediate node introduces randomness to the received data in the transmission optimization layer according to a preset rule, and disturbs periodic characteristics; after the data center receives the data packet, the disturbance data is removed on the transmission optimization layer according to the preset rule; decrypting the data subjected to disturbance removal in the encryption and verification layer; original data are recovered in the data confusion layer according to the topological structure information of the power grid; and the integrity of the data is verified through the data signature in the encryption and verification layer.

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