56 страниц. 2014 год. LAP Lambert Academic Publishing Body Sensor Networks (BSN)consists of tiny devices called bio-sensors. These bio-sensors are fixed on, or near a body for monitoring different vital signs. These bio-sensors sense/process data, make communication among each other/gateway. The security of such networks is of main concern. We proposed a key management scheme based on a complex Discrete Logarithm problem. The proposed scheme uses the threshold complex public key cryptography to achieve low computation cost, utilized less memory, and produced less communication overhead.