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Improved method of secret key generation based on variations in wireless channel

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3 Author(s)
Abhijit Ambekar ; Wireless Communications and Navigation, University of Kaiserslautern, Germany ; Nandish Kuruvatti ; Hans D. Schotten

We propose an improved method of secret key generation using the variations in wireless channel. We construct reciprocal channel profiles at a pair of transceivers and enhance it using the l1-norm minimization technique. Thereafter preliminary keys are obtained that are synchronized by a localized information reconciliation technique. The privacy of the synchronized keys is enhanced by generating secure hashes. We implement the proposed method on a testbed and validate its performance to show decreased rates of bit disagreement of preliminary keys, at an increased key generation rate.

Published in:

2012 19th International Conference on Systems, Signals and Image Processing (IWSSIP)

Date of Conference:

11-13 April 2012