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Secure key generation encryption scheme based on index parameter updates.

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    This study introduces a novel secure key generation and encryption scheme using index parameter updates and chaotic encryption via a 7-dimensional cellular neural network (7D-CNN). The method achieves high-speed, secure optical data transmission with a massive key space.

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    Area of Science:

    • Optical Communications
    • Information Security
    • Signal Processing

    Background:

    • Secure key generation is crucial for modern communication systems.
    • Existing encryption methods face challenges in speed and key space.
    • Optical communication systems require robust security measures.

    Purpose of the Study:

    • To propose a novel secure key generation and encryption scheme for optical communication.
    • To enhance data security using chaotic encryption and a large key space.
    • To achieve high-speed and low-delay encrypted data transmission.

    Main Methods:

    • A secure key generation scheme based on mutual coupling index parameter updates.
    • Chaotic encryption of data using a 7-dimensional cellular neural network (7D-CNN) chaotic system.
    • Transmission of encrypted signals over a 7-core optical fiber.

    Main Results:

    • Successful demonstration of 110.1Gb/s encrypted 16QAM signal transmission over 2 km of 7-core optical fiber.
    • Achieved a massive key space of 10^1,680, a world-leading level.
    • Minimal impact on receiver sensitivity (0.6 dB cost).

    Conclusions:

    • The proposed scheme offers a flexible, high-speed, and secure digital encryption mode.
    • It provides a low-cost, high-security optical communication transmission solution.
    • The scheme is interoperable with existing optical communication systems.