Patent ID: 8707435
Filing Date: 2014-04-22
Classification: H04L,H04W

Abstract:
1. A method for identifying compromised nodes in a ZigBee network comprising a general trust center, divided into a plurality of security domains, each security domain being associated with a different root keying material, and each node being identified by an identifier, the method comprising: upon detecting a node entering a security domain, the general trust center distributing to the node at least one keying material share corresponding to the entered security domain, and upon detecting corruption of at least two of the plurality of security domains, determining, for each corrupted security domain, based on information registered by a base station, a respective set of nodes having received the at least one keying material share corresponding to the corrupted security domain, comparing the respective set of nodes corresponding to the at least two corrupted security domains and identifying common nodes as being compromised.