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Recent emergence of electronic culture uplifts healthcare facilities to a newera with the aid of wireless sensor network (WSN) technology. Due to thesensitiveness of medical data, austere privacy and security are inevitable forall parts of healthcare systems. However, the constantly evolving nature andconstrained resources of sensors in WSN inflict unavailability of a lucid lineof defense to ensure perfect security. In order to provide holistic security,protections must be incorporated in every component of healthcare sensornetworks. This paper proposes an efficient security scheme for healthcareapplications of WSN which uses the notion of public key cryptosystem. Ourentire security scheme comprises basically of two parts; a key handshakingscheme based on simple linear operations and the derivation of decryption keyby a receiver node for a particular sender in the network. Our architectureallows both base station to node or node to base station secure communications,and node-to-node secure communications. We consider both the issues ofstringent security and network performance to propose our security scheme.

Securing U-Healthcare Sensor Networks using Public Key Based Scheme