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    Area of Science:

    • Cryptography
    • Information Security
    • Optical Communications

    Background:

    • Simulations for video encryption algorithms overlook practical communication challenges.
    • This gap hinders the evaluation of algorithm effectiveness and security in real-world scenarios.

    Purpose of the Study:

    • To propose a novel video encryption scheme for visible light communication (VLC) environments.
    • To address the limitations of simulation-based evaluations by considering practical communication conditions.

    Main Methods:

    • A modified chaotic Colpitts oscillator for chaos generation.
    • Block scrambling and pixel-level permutation using a customized Josephus problem and column/row shifting.
    • Diffusion via a custom Josephus problem-oriented RNA operation, basic RNA operations, and cipher block chaining (CBC).

    Main Results:

    • The customized Josephus problem permutation demonstrated higher efficiency compared to traditional methods.
    • Column and row shifting permutation proved to be more robust.
    • The proposed RNA operation reduced computational overhead by eliminating key sequence coding and item-to-item operations.

    Conclusions:

    • The developed video encryption scheme is effective and resilient for securing data over VLC channels.
    • This advancement is significant for applications requiring robust secured video data, such as surveillance, medical imaging, and military communication.