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This paper considers an application of the quantum stream cipher (QSC) Y-00. QSC Y-00 can provide secure long-haul and high-capacity data transmission in optical networks. Post-quantum cryptography (PQC) can provide quantum-resistant authentication and key-establishment. We propose a secure link architecture for optical communication networks using QSC Y-00 and PQC. Further, we report a field experiment using the optical fibers embedded along a railway truck between two train stations to demonstrate user authentication, key-establishment, and secure data communication with the intensity modulation-based Y-00 transceivers and PQC. Finally, we discuss the further applications of the proposed secure link architecture.
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(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Kentaro Kato, Fumio Futami, Ken Tanizawa, "Quantum-enhanced secure-link architecture with quantum stream cipher Y-00 and post-quantum cryptography: basic structure and experiment," Proc. SPIE 12692, Quantum Communications and Quantum Imaging XXI, 126920C (3 October 2023); https://doi.org/10.1117/12.2677258