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Volume 11
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10.3390/app11093767
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Article

Quantum Key Distribution Networks: Challenges and Future Research Issues in Security

by
Chia-Wei Tsai
1,
Chun-Wei Yang
2,
Jason Lin
3,
Yao-Chung Chang
1,* and
Ruay-Shiung Chang
4
1
Department of Computer Science and Information Engineering, National Taitung University, No. 369, University Rd., Taitung 95092, Taiwan
2
Master Program for Digital Health Innovation, College of Humanities and Sciences, China Medical University, No. 100, Sec. 1, Jingmao Rd., Beitun Dist., Taichung 406040, Taiwan
3
Department of Computer Science and Engineering, National Chung Hsing University, No. 145, Xingda Rd., South District, Taichung 40227, Taiwan
4
Department of Institute of Information and Decision Sciences, National Taipei University of Business, No.321, Sec. 1, Jinan Rd., Jhongjheng Dist., Taipei City 100025, Taiwan
*
Author to whom correspondence should be addressed.
Appl. Sci. 2021, 11(9), 3767; https://doi.org/10.3390/app11093767
Submission received: 30 March 2021 / Revised: 17 April 2021 / Accepted: 19 April 2021 / Published: 22 April 2021
(This article belongs to the Special Issue Quantum Communications and Quantum Networks)
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Abstract

A quantum key distribution (QKD) network is proposed to allow QKD protocols to be the infrastructure of the Internet for distributing unconditional security keys instead of existing public-key cryptography based on computationally complex mathematical problems. Numerous countries and research institutes have invested enormous resources to execute correlation studies on QKD networks. Thus, in this study, we surveyed existing QKD network studies and practical field experiments to summarize the research results (e.g., type and architecture of QKD networks, key generating rate, maximum communication distance, and routing protocol). Furthermore, we highlight the three challenges and future research issues in the security of QKD networks and then provide some feasible resolution strategies for these challenges.
Keywords: quantum key distribution; quantum key distribution network; unconditional security quantum key distribution; quantum key distribution network; unconditional security

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MDPI and ACS Style

Tsai, C.-W.; Yang, C.-W.; Lin, J.; Chang, Y.-C.; Chang, R.-S. Quantum Key Distribution Networks: Challenges and Future Research Issues in Security. Appl. Sci. 2021, 11, 3767. https://doi.org/10.3390/app11093767

AMA Style

Tsai C-W, Yang C-W, Lin J, Chang Y-C, Chang R-S. Quantum Key Distribution Networks: Challenges and Future Research Issues in Security. Applied Sciences. 2021; 11(9):3767. https://doi.org/10.3390/app11093767

Chicago/Turabian Style

Tsai, Chia-Wei, Chun-Wei Yang, Jason Lin, Yao-Chung Chang, and Ruay-Shiung Chang. 2021. "Quantum Key Distribution Networks: Challenges and Future Research Issues in Security" Applied Sciences 11, no. 9: 3767. https://doi.org/10.3390/app11093767

APA Style

Tsai, C.-W., Yang, C.-W., Lin, J., Chang, Y.-C., & Chang, R.-S. (2021). Quantum Key Distribution Networks: Challenges and Future Research Issues in Security. Applied Sciences, 11(9), 3767. https://doi.org/10.3390/app11093767

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