What is it about?
In this work, we improve the confidentiality of visible light communication (VLC) links by proposing a robust key-generation mechanism for optical orthogonal frequency division multiplexing (OFDM) systems in an indoor environment. We propose to generate keys from the bipolar OFDM samples at the output of optical OFDM systems. We suggest to assign a part of cyclic prefix samples located in the region of small channel effect for keys generation during session period.
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Why is it important?
The proposed scheme generates keys for medium access control (MAC) sublayer and physical layer. It provides high computational security against passive eavesdroppers in the physical level, because each signal frame is encrypted by a different key. So, the encryption in MAC level can be turned off without any risk in security. This setting can enhance the system throughput. Also, the implemented method achieves zero bit disagreement rates with key generation on the fly.
Perspectives
Writing this article and getting it published is a suitable and adequate method of reporting new information about the security of visible light communication networks to the scientific community. It is also the stepping stone for the professional career of a research scientist who is interested in security.
Yahya Al-Moliki
King Saud University
Read the Original
This page is a summary of: Robust Key Generation From Optical OFDM Signal in Indoor VLC Networks, IEEE Photonics Technology Letters, November 2016, Institute of Electrical & Electronics Engineers (IEEE),
DOI: 10.1109/lpt.2016.2609683.
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