Dynamic hyperchaotic key generation using optical orthogonal frequency division multiplexing‐based visible light communication networks.

This paper introduces an optical orthogonal frequency division multiplexing (OFDM)‐based hyperchaotic key generation encryption approach that can improve confidentiality in visible light communication (VLC) networks. Using a hyperchaotic four‐dimensional method, the bipolar real‐valued OFDM signal can be used for constructing dynamic cipher keys modified at every frame over the communication time, resulting in a superior degree of protection against malicious attacks. In accordance with our findings, this approach decreases the ratio of peak‐to‐average power of the transmitted signal, and enhances the bit error rate efficiency and secrecy capacity of the OFDM‐based VLC network, which improves confidentiality. © 2022 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC. [ABSTRACT FROM AUTHOR]