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Related Experiment Video

Updated: Feb 19, 2026

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Key on demand (KoD) for software-defined optical networks secured by quantum key distribution (QKD).

Yuan Cao, Yongli Zhao, Carlos Colman-Meixner

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    Summary

    This study integrates quantum key distribution (QKD) with software-defined optical networking (SDON) to enhance cybersecurity. A novel key on demand (KoD) scheme, using a routing, wavelength, and key assignment (RWKA) algorithm, secures control and data channels against cyberattacks.

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    Area of Science:

    • Computer Science
    • Quantum Information Science
    • Network Security

    Background:

    • Software-defined optical networking (SDON) is the future network architecture but is vulnerable to cyberattacks.
    • Data encryption is crucial for security, but secure key exchange remains a challenge.
    • Quantum Key Distribution (QKD) offers a solution for secure key interchange.

    Purpose of the Study:

    • To propose and evaluate a novel scheme for integrating QKD with WDM optical networks to secure SDON architecture.
    • To introduce a key on demand (KoD) scheme enabled by a routing, wavelength, and key assignment (RWKA) algorithm.
    • To enhance the security of both control channels (CChs) and data channels (DChs) in SDON.

    Main Methods:

    • Developed a QKD over SDON with KoD model.
    • Implemented quantum key pools (QKPs) for securing CChs and DChs.
    • Utilized the RWKA algorithm within the KoD scheme for key allocation and updates.
    • Defined a security probability index to measure security gains.

    Main Results:

    • The proposed model enhances the security of CChs and DChs by provisioning sufficient secret keys in QKPs.
    • Key-updating strategies, considering potential cyberattacks, further improve security performance.
    • The KoD scheme effectively balances security requirements with key resource utilization.

    Conclusions:

    • Integrating QKD with SDON using the KoD scheme and RWKA algorithm significantly improves network security.
    • The model provides a robust solution for secure key management in next-generation optical networks.
    • The approach demonstrates a practical method for achieving a favorable security-resource trade-off.