{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,2]],"date-time":"2026-06-02T04:57:55Z","timestamp":1780376275201,"version":"3.54.1"},"reference-count":30,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2022,10,24]],"date-time":"2022-10-24T00:00:00Z","timestamp":1666569600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100012166","name":"National Key R&amp;D Program of China","doi-asserted-by":"publisher","award":["2020YFE0200600"],"award-info":[{"award-number":["2020YFE0200600"]}],"id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Entropy"],"abstract":"<jats:p>As the foundation of quantum secure communication, the quantum key distribution (QKD) network is impossible to construct by using the operation mechanism of traditional networks. In the meantime, most of the existing QKD network routing schemes do not fit some specific quantum key practicality scenarios. Aiming at the special scenario of high concurrency and large differences in application requirements, we propose a new quantum key distribution network routing scheme based on application priority ranking (APR-QKDN). Firstly, the proposed APR-QKDN scheme comprehensively uses the application\u2019s priority, the total amount of key requirements, and the key update rate for prioritizing a large number of concurrent requests. The resource utilization and service efficiency of the network are improved by adjusting the processing order of requests. Secondly, the queuing strategy of the request comprehensively considers the current network resource situation. This means the same key request may adopt different evaluation strategies based on different network resource environments. Finally, the performance of the APR-QKDN routing scheme is compared with the existing schemes through simulation experiments. The results show that the success rate of application key requests of the APR-QKDN routing scheme is improved by at least 5% in the scenario of high concurrency.<\/jats:p>","DOI":"10.3390\/e24111519","type":"journal-article","created":{"date-parts":[[2022,10,24]],"date-time":"2022-10-24T10:09:23Z","timestamp":1666606163000},"page":"1519","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["APR-QKDN: A Quantum Key Distribution Network Routing Scheme Based on Application Priority Ranking"],"prefix":"10.3390","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7202-4939","authenticated-orcid":false,"given":"Liquan","family":"Chen","sequence":"first","affiliation":[{"name":"School of Cyber Science and Engineering, Southeast University, Nanjing 210096, China"},{"name":"Purple Mountain Laboratories for Network and Communication Security, Nanjing 211118, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ziyan","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Cyber Science and Engineering, Southeast University, Nanjing 210096, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mengnan","family":"Zhao","sequence":"additional","affiliation":[{"name":"School of Cyber Science and Engineering, Southeast University, Nanjing 210096, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6718-8875","authenticated-orcid":false,"given":"Kunliang","family":"Yu","sequence":"additional","affiliation":[{"name":"School of Cyber Science and Engineering, Southeast University, Nanjing 210096, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Suhui","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Cyber Science and Engineering, Southeast University, Nanjing 210096, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,10,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"151","DOI":"10.1049\/qtc2.12044","article-title":"Towards the Industrialisation of Quantum Key Distribution in Communication Networks: A Short Survey","volume":"3","author":"Liu","year":"2022","journal-title":"IET Quantum Commun."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"22","DOI":"10.1007\/s11128-019-2517-x","article-title":"A Generic Quantum Protocol for One-Sided Secure Two-Party Classical Computations","volume":"19","author":"Shi","year":"2019","journal-title":"Quantum Inf. Process."},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Beckwith, L., and Diehl, W. (2020, January 9\u201311). New Directions for NewHope: Improving Performance of Post-Quantum Cryptography through Algorithm-Level Pipelining. Proceedings of the 2020 International Conference on Field-Programmable Technology (ICFPT), Maui, HI, USA.","DOI":"10.1109\/ICFPT51103.2020.00025"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"8725","DOI":"10.1364\/OE.418323","article-title":"Experimental Underwater Quantum Key Distribution","volume":"29","author":"Feng","year":"2021","journal-title":"Opt. Express"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"012606","DOI":"10.1103\/PhysRevA.103.012606","article-title":"Bennett-Brassard 1984 Quantum Key Distribution Using Conjugate Homodyne Detection","volume":"103","author":"Qi","year":"2021","journal-title":"Phys. Rev. A"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"1012","DOI":"10.1364\/AOP.361502","article-title":"Advances in Quantum Cryptography","volume":"12","author":"Pirandola","year":"2020","journal-title":"Adv. Opt. Photon."},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Aji, A., Jain, K., and Krishnan, P. (2021, January 1\u20133). A Survey of Quantum Key Distribution (QKD) Network Simulation Platforms. Proceedings of the 2021 2nd Global Conference for Advancement in Technology (GCAT), Bangalore, India.","DOI":"10.1109\/GCAT52182.2021.9587708"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"59","DOI":"10.1109\/MNET.2012.6246754","article-title":"Quantum Networking and Internetworking","volume":"26","author":"Meter","year":"2012","journal-title":"IEEE Netw."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"2049","DOI":"10.1109\/OJCOMS.2021.3106659","article-title":"Quantum Key Distribution Secured Optical Networks: A Survey","volume":"2","author":"Sharma","year":"2021","journal-title":"IEEE Open J. Commun. Soc."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"31","DOI":"10.1109\/LCOMM.2021.3124902","article-title":"QoS-Aware Secrecy Rate Maximization in Untrusted NOMA With Trusted Relay","volume":"26","author":"Amin","year":"2022","journal-title":"IEEE Commun. Lett."},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"Guerrini, S., Chiani, M., and Conti, A. (2018, January 9\u201313). Secure Key Throughput of Intermittent Trusted-Relay QKD Protocols. Proceedings of the 2018 IEEE Globecom Workshops (GC Wkshps), Abu Dhabi, United Arab Emirates.","DOI":"10.1109\/GLOCOMW.2018.8644402"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"2701","DOI":"10.1109\/JSAC.2021.3064662","article-title":"Hybrid Trusted\/Untrusted Relay-Based Quantum Key Distribution over Optical Backbone Networks","volume":"39","author":"Cao","year":"2021","journal-title":"IEEE J. Sel. Areas Commun."},{"key":"ref_13","doi-asserted-by":"crossref","unstructured":"Wen, X., Li, Q., Wang, H., Yang, H., and Bai, H. (2017). A Bayesian Based Finite-Size Effect Analysis of QKD, Springer International Publishing.","DOI":"10.1007\/978-3-319-50212-0_20"},{"key":"ref_14","doi-asserted-by":"crossref","unstructured":"Van Assche, G. (2006). Quantum Cryptography and Secret-Key Distillation, Cambridge University Press.","DOI":"10.1017\/CBO9780511617744"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"1301","DOI":"10.1103\/RevModPhys.81.1301","article-title":"The Security of Practical Quantum Key Distribution","volume":"81","author":"Scarani","year":"2009","journal-title":"Rev. Mod. Phys."},{"key":"ref_16","doi-asserted-by":"crossref","unstructured":"Ali, A. (2021, January 14\u201318). A Pragmatic Analysis of Pre- and Post-Quantum Cyber Security Scenarios. Proceedings of the 2021 International Bhurban Conference on Applied Sciences and Technologies (IBCAST), Islamabad, Pakistan.","DOI":"10.1109\/IBCAST51254.2021.9393278"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"5750","DOI":"10.1038\/s41467-021-25954-0","article-title":"Entropic Singularities Give Rise to Quantum Transmission","volume":"12","author":"Siddhu","year":"2021","journal-title":"Nat. Commun."},{"key":"ref_18","doi-asserted-by":"crossref","unstructured":"Yu, X., Ning, X., Zhu, Q., Lv, J., Zhao, Y., Zhang, H., and Zhang, J. (2021). Multi-Dimensional Routing, Wavelength, and Timeslot Allocation (RWTA) in Quantum Key Distribution Optical Networks (QKD-ON). Appl. Sci., 11.","DOI":"10.3390\/app11010348"},{"key":"ref_19","first-page":"565","article-title":"Research and Design of QKD Network Random Routing Algorithm Based on Backtracking","volume":"50","author":"Xu","year":"2021","journal-title":"J. Univ. Electron. Sci. Technol. China"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"26453","DOI":"10.1364\/OE.25.026453","article-title":"Key on Demand (KoD) for Software-Defined Optical Networks Secured by Quantum Key Distribution (QKD)","volume":"25","author":"Cao","year":"2017","journal-title":"Opt. Express"},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Ma, W., Liu, L., Chen, B., Gao, M., Chen, H., and Wu, J. (2020, January 24\u201327). Routing, Wavelength and Time-Slot Assignment Approaches with Security Level in QKD-Enabled Optical Networks. Proceedings of the 2020 Asia Communications and Photonics Conference (ACP) and International Conference on Information Photonics and Optical Communications (IPOC), Beijing, China.","DOI":"10.1364\/ACPC.2020.M4A.187"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"309","DOI":"10.1007\/s11128-021-03246-2","article-title":"ADA-QKDN: A New Quantum Key Distribution Network Routing Scheme Based on Application Demand Adaptation","volume":"20","author":"Chen","year":"2021","journal-title":"Quantum Inf. Process."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"3530","DOI":"10.1109\/JLT.2022.3153992","article-title":"Secret-Key Provisioning with Collaborative Routing in Partially-Trusted-Relay-Based Quantum-Key-Distribution-Secured Optical Networks","volume":"40","author":"Yu","year":"2022","journal-title":"J. Light. Technol."},{"key":"ref_24","doi-asserted-by":"crossref","unstructured":"Sharma, P., Bhatia, V., and Prakash, S. (2020, January 14\u201317). Priority Order-Based Key Distribution in QKD-Secured Optical Networks. Proceedings of the 2020 IEEE International Conference on Advanced Networks and Telecommunications Systems (ANTS), New Delhi, India.","DOI":"10.1109\/ANTS50601.2020.9342761"},{"key":"ref_25","doi-asserted-by":"crossref","unstructured":"Zhang, K., Yu, X., Wang, Y., Li, Y., Zhao, Y., and Zhang, J. (2021, January 23\u201327). Service Priority Based Cross-Layer Routing and Resource Allocation in Quantum Key Distribution Enabled Optical Networks (QKD-ON). Proceedings of the 2021 19th International Conference on Optical Communications and Networks (ICOCN), Qufu, China.","DOI":"10.1109\/ICOCN53177.2021.9563868"},{"key":"ref_26","doi-asserted-by":"crossref","unstructured":"Chen, L., Chen, Q., Zhao, M., Chen, J., Liu, S., and Zhao, Y. (2022). DDKA-QKDN: Dynamic On-Demand Key Allocation Scheme for Quantum Internet of Things Secured by QKD Network. Entropy, 24.","DOI":"10.3390\/e24020149"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"102755","DOI":"10.1016\/j.yofte.2021.102755","article-title":"Efficient Ordering Policy for Secret Key Assignment in Quantum Key Distribution-Secured Optical Networks","volume":"68","author":"Sharma","year":"2022","journal-title":"Opt. Fiber Technol."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"2350","DOI":"10.1080\/09500340.2017.1360956","article-title":"The QKD Network: Model and Routing Scheme","volume":"64","author":"Yang","year":"2017","journal-title":"J. Mod. Opt."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"33","DOI":"10.1109\/CC.2018.8300270","article-title":"Quantum Key Distribution Network: Optimal Secret-Key-Aware Routing Method for Trust Relaying","volume":"15","author":"Yang","year":"2018","journal-title":"China Commun."},{"key":"ref_30","doi-asserted-by":"crossref","unstructured":"Yao, J., Wang, Y., Li, Q., Mao, H., El-Latif, A.A.A., and Chen, N. (2022). An Efficient Routing Protocol for Quantum Key Distribution Networks. 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