METHOD OF GROUP KEY GENERATION AND MANAGEMENT FOR GENERIC OBJECT ORIENTED SUBSTANTIATION EVENTS MODEL

摘要

A method and an apparatus provide dedicated group key distribution in systems employing generic object oriented substation events (GOOSE). The method includes defining a group configuration for the GOOSE system via a plurality of field devices, verifying possession by each field device in the group of an asymmetric key pair, distributing a group key individually to each field group member device by a substation controller via a secure interaction between the substation controller and the group member device, and updating the group key after the group configuration has changed.