METHOD FOR MANAGING A SECURITY KEY OF A SUPERVISORY CONTROL AND DATA ACQUISITION SYSTEM AND AN APPARATUS THEREOF, PARTICULARLY USING HIERARCHICAL SECURITY KEY MANAGEMENT

摘要

PURPOSE: A method for managing a security key of a supervisory control and data acquisition system and an apparatus thereof are provided to enhance the communication security by using hierarchical security key management.;CONSTITUTION: A reception unit(510) receives a security key change request from nodes which constitute an SCADA(Supervisory Control And Data Acquisition) system, and a generation unit(530) generates a security key of update node placed in a root of the node. A distribution unit(540) distribute a security key for the update nodes, and the node have a local key hierarchy. The nodes judge the intrusion by using pattern analysis, and the node request the change of the security key when judging the intrusion.;COPYRIGHT KIPO 2010