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Nowadays, wireless senor networks are widely applied in many remote fields such as disaster management and habitat monitoring. Clustered WSN have been proven to outperform their non-clustered counterparts in many aspects. Security is very crucial because these networks usually operate in the hazardous environments and the sensor nodes in these networks are resource-limited. Key management is one of the fundamental protocols to build a secure WSN. In this paper, we propose a light-weight key management scheme for clustered WSN. Our proposed scheme is based on LU decomposition which is less computation, memory, communication cost than the usual schemes. We also present performance analysis.

A Key Management Scheme for Clustered Wireless Senor Network in Remote Field