Mobility

Secret Key Generation Rate Vs. Reconciliation Cost Using Wireless Channel Characteristics in Body Area Networks

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Executive Summary

In this paper, the authors investigate the feasibility of real-time derivation of cryptographic keys in body area networks using unique characteristics of the underlying wireless channel. They perform experiments to confirm that motion does indeed provide significant highly correlated randomness on either end of the wireless link between base-station and mobile mote to enable real-time key generation. Furthermore, they demonstrate that channel characteristics for a dynamic body area network consist of two different components, a fast and a slow component, each of which make a qualitatively different contribution to key generation.

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