Clustering-Based Key Renewals for Wireless Sensor Networks

Gicheol WANG  Gihwan CHO 

Publication
IEICE TRANSACTIONS on Communications  Vol.E92-B  No.2  pp.612-615
Publication Date: 2009/02/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Network
Keyword: 
clustering-based key renewal,  dynamic key management,  wireless sensor networks, 

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Summary: 
In the proposed scheme, every sensor establishes communications keys with its neighbors after deployment. They are selectively employed for intra-cluster communications, and the employed keys are determined by local topology of clusters. Thus, our scheme periodically changes the local topology of clusters so as to renew the intra-cluster communication keys. Besides, new Cluster Heads (CHs) easily share a key with the Base Station (BS) by informing the BS of their member information without sending key materials. Simulation results prove that our approach has strong resiliency against the increase of compromised sensors. It also achieves a performance gain in terms of energy.