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    This summary is machine-generated.

    This study introduces an optical asymmetric joint transform correlator (JTC) cryptosystem using trapdoor one-way functions. It enhances security and simplifies key management for optical cryptography.

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    Area of Science:

    • Optics and Photonics
    • Cryptography
    • Information Security

    Background:

    • The joint transform correlator (JTC) cryptosystem offers simplicity but faces security risks due to identical encryption/decryption keys.
    • Key distribution and management are critical vulnerabilities in conventional JTC cryptosystems.

    Purpose of the Study:

    • To develop an optical asymmetric JTC cryptosystem addressing key management and security vulnerabilities.
    • To enhance resistance against various cryptanalytic attacks.

    Main Methods:

    • Creation of a novel trapdoor one-way function utilizing image superposition and subtraction.
    • Integration of one-way binary phase modulation with the JTC architecture.
    • Utilization of a structured spiral phase mask (SSPM) with controllable parameters as the JTC key mask.
    • Protection of SSPM structural parameters using the RSA algorithm.

    Main Results:

    • The proposed asymmetric JTC cryptosystem demonstrates enhanced security and improved key distribution/management.
    • Trapdoor one-way functions provide effectiveness, implementability, and robust attack resistance.
    • Integration with RSA ensures alignment with public-key cryptosystem principles.

    Conclusions:

    • The developed optical asymmetric JTC cryptosystem successfully overcomes the limitations of traditional JTC systems.
    • The combination of novel trapdoor functions, SSPM, and RSA offers a secure and manageable solution for optical cryptography.
    • Simulation and experimental results validate the proposed cryptosystem's correctness and feasibility.