Efficient Group Key Management and Authentication for Body Sensor Networks
Wireless Body Sensor Networks (BSN) are being used to continuously monitor the patient's conditions and recovery progress. It is very important to secure the confidentiality, integrity and authenticity of the patient's health record in such applications. In this paper, the authors propose a novel key distribution and management scheme that uses key-chains to establish group keys for body sensor networks. This scheme caters for efficient group key update and re-keying in order to adapt to membership changes. They also present a lightweight approach to enable sensor-to-sensor authentication in the BSNs.