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DOI: 10.14569/IJACSA.2012.030127
PDF

Secret Key Agreement Over Multipath Channels Exploiting a Variable-Directional Antenna

Author 1: Valery Korzhik
Author 2: Viktor Yakovlev
Author 3: Yuri Kovajkin
Author 4: Guillermo Morales-Luna

International Journal of Advanced Computer Science and Applications(IJACSA), Volume 3 Issue 1, 2012.

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Abstract: We develop an approach of key distribution protocol(KDP) proposed recently by T.Aono et al., where the security of KDP is only partly estimated in terms of eavesdropper's key bit errors. Instead we calculate the Shannon's information leaking to a wire tapper and also we apply the privacy amplification procedure from the side of the legal users. A more general mathematical model based on the use of Variable-Directional Antenna (VDA) under the condition of multipath wave propagation is proposed. The new method can effectively be used even in noiseless interception channels providing thus a widened area with respect to practical applications. Statistical characteristics of the VDA are investigated by simulation, allowing to specify the model parameters. We prove that the proposed KDP provides both security and reliability of the shared keys even for very short distances between legal users and eavesdroppers. Antenna diversity is proposed as a mean to enhance the KDP security. In order to provide a better performance evaluation of the KDP, it is investigated the use of error correcting codes.

Keywords: wireless communication, wave propagation, cryptography, key distribution

Valery Korzhik, Viktor Yakovlev, Yuri Kovajkin and Guillermo Morales-Luna, “Secret Key Agreement Over Multipath Channels Exploiting a Variable-Directional Antenna ” International Journal of Advanced Computer Science and Applications(IJACSA), 3(1), 2012. http://dx.doi.org/10.14569/IJACSA.2012.030127

@article{Korzhik2012,
title = {Secret Key Agreement Over Multipath Channels Exploiting a Variable-Directional Antenna },
journal = {International Journal of Advanced Computer Science and Applications},
doi = {10.14569/IJACSA.2012.030127},
url = {http://dx.doi.org/10.14569/IJACSA.2012.030127},
year = {2012},
publisher = {The Science and Information Organization},
volume = {3},
number = {1},
author = {Valery Korzhik and Viktor Yakovlev and Yuri Kovajkin and Guillermo Morales-Luna}
}



Copyright Statement: This is an open access article licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, even commercially as long as the original work is properly cited.

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