Resource-Efficient Security for Medical Body Sensor Networks

Authors:
Oscar Garcia Morchon;Heribert Baldus;David Sanchez Sanchez
Affiliations:
Philips Research Laboratories, Aachen;Philips Research Laboratories, Aachen;Universitat Pompeu Fabra, Barcelona
Venue:
BSN '06 Proceedings of the International Workshop on Wearable and Implantable Body Sensor Networks
Year:
2006

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ACM Transactions on Sensor Networks (TOSN)

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Abstract

Key management is a fundamental service for medical body sensor network (BSN) security. It provides and manages the cryptographic keys to enable essential security services such as confidentiality, integrity and authentication. In the medical context, the design of a key management service must be consistent with the strict operational and security requirements of healthcare as well as with the resource restrictions of BSN technology. The Deterministic Pairwise Key Pre-distribution Scheme (DPKPS) allows direct pairwise key establishment in sensor networks. We present a consistent key management service for hospital BSNs based on the DPKPS. We also describe a practical implementation specifically adapted to the strict resource-constraints of the popular MICAz sensor platform. Our performance analysis demonstrates that this key management service enables advanced BSN security services at an extremely low-power and low-memory cost.