Wireless-Channel Key Distribution Based on Laser Synchronization

Xu, Junpei; Wang, Anbang; Zhang, Xinhui; Mo, Laihong; Zhang, Yuhe; Sun, Yuehui; Qin, Yuwen; Wang, Yuncai

doi:10.3390/e26030181

Open AccessArticle

Wireless-Channel Key Distribution Based on Laser Synchronization

by

Junpei Xu

¹,

Anbang Wang

^1,2,3,

Xinhui Zhang

¹,

Laihong Mo

¹,

Yuhe Zhang

¹,

Yuehui Sun

^1,2,3

,

Yuwen Qin

^1,2,3

and

Yuncai Wang

^1,2,3,*

¹

Institute of Advanced Photonics Technology, School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China

²

Key Laboratory of Photonic Technology for Integrated Sensing and Communication, Ministry of Education of China, Guangdong University of Technology, Guangzhou 510006, China

³

Guangdong Provincial Key Laboratory of Information Photonics Technology, Guangdong University of Technology, Guangzhou 510006, China

^*

Author to whom correspondence should be addressed.

Entropy 2024, 26(3), 181; https://doi.org/10.3390/e26030181

Submission received: 19 January 2024 / Revised: 12 February 2024 / Accepted: 15 February 2024 / Published: 21 February 2024

(This article belongs to the Special Issue Cryptography and Data Security Based on Information Theory)

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Abstract

We propose and experimentally demonstrate a wireless-channel key distribution scheme based on laser synchronization induced by a common wireless random signal. Two semiconductor lasers are synchronized under injection of the drive signal after electrical-optical conversion and emit irregular outputs that are used to generate shared keys. Our proof-of-concept experiment using a complex drive signal achieved a secure key generation rate of up to 150 Mbit/s with a bit error rate below 3.8 × 10⁻³. Numerical simulation results show that the proposed scheme has the potential to achieve a distribution distance of several hundred meters. It is believed that common-signal-induced laser synchronization paves the way for high-speed wireless physical-layer key distribution.

Keywords: wireless security; physical layer security; key distribution; nonlinear systems; laser synchronization

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MDPI and ACS Style

Xu, J.; Wang, A.; Zhang, X.; Mo, L.; Zhang, Y.; Sun, Y.; Qin, Y.; Wang, Y. Wireless-Channel Key Distribution Based on Laser Synchronization. Entropy 2024, 26, 181. https://doi.org/10.3390/e26030181

AMA Style

Xu J, Wang A, Zhang X, Mo L, Zhang Y, Sun Y, Qin Y, Wang Y. Wireless-Channel Key Distribution Based on Laser Synchronization. Entropy. 2024; 26(3):181. https://doi.org/10.3390/e26030181

Chicago/Turabian Style

Xu, Junpei, Anbang Wang, Xinhui Zhang, Laihong Mo, Yuhe Zhang, Yuehui Sun, Yuwen Qin, and Yuncai Wang. 2024. "Wireless-Channel Key Distribution Based on Laser Synchronization" Entropy 26, no. 3: 181. https://doi.org/10.3390/e26030181

APA Style

Xu, J., Wang, A., Zhang, X., Mo, L., Zhang, Y., Sun, Y., Qin, Y., & Wang, Y. (2024). Wireless-Channel Key Distribution Based on Laser Synchronization. Entropy, 26(3), 181. https://doi.org/10.3390/e26030181

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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Wireless-Channel Key Distribution Based on Laser Synchronization

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