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Updated: Jul 6, 2026

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

Stream cipher based on pseudorandom number generation with optical affine transformation.

T Sasaki, H Togo, J Tanida

    Applied Optics
    |March 18, 2008
    PubMed
    Summary
    This summary is machine-generated.

    We introduce a novel stream cipher for 2-D image encryption using iterative optical transformations and a pseudorandom number generator (PRNG). This method promises efficient, parallel processing for enhanced image security.

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    A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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    Last Updated: Jul 6, 2026

    Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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    A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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    A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

    Published on: September 5, 2019

    Area of Science:

    • Computer Science
    • Optical Engineering
    • Cryptography

    Background:

    • Stream ciphers are crucial for secure data transmission.
    • Existing methods may lack efficiency for large image datasets.
    • Optical processing offers potential for high-speed computation.

    Purpose of the Study:

    • To propose a new stream cipher technique for 2-D image data.
    • To enable implementation via iterative optical transformation.
    • To leverage optical parallel processing for efficiency.

    Main Methods:

    • A novel pseudorandom number generator (PRNG) is developed.
    • The PRNG utilizes iterative 2-D affine transformations.
    • Modulo-n addition of transformed images generates the pseudorandom sequence.

    Main Results:

    • The proposed stream cipher is designed for 2-D image data.
    • Iterative optical transformation is the core implementation method.
    • Performance is evaluated for security strength.

    Conclusions:

    • The proposed stream cipher offers a new approach to image encryption.
    • Optical parallel processing is expected to enhance execution efficiency.
    • Challenges in optical implementation were identified using an optical fractal synthesizer.