{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,7]],"date-time":"2026-02-07T10:59:14Z","timestamp":1770461954297,"version":"3.49.0"},"reference-count":34,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2022,1,21]],"date-time":"2022-01-21T00:00:00Z","timestamp":1642723200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003621","name":"Ministry of Science ICT and Future Planning","doi-asserted-by":"publisher","award":["2021-0-01810"],"award-info":[{"award-number":["2021-0-01810"]}],"id":[{"id":"10.13039\/501100003621","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cryptography"],"abstract":"<jats:p>Based on the addressability of quantum superposition and its unitary transformation, a network-compatible, unconditionally secured key distribution protocol is presented for arbitrary networking in a classical regime with potential applications of one-time-pad cryptography. The network capability is due to the addressable unitary transformation between arbitrary point-to-point connections in a network through commonly shared double transmission channels. The unconditional security is due to address-sensitive eavesdropping randomness via network authentication. The proposed protocol may offer a solid platform of unconditionally secured classical cryptography for mass-data communications in a conventional network, which would be otherwise impossible.<\/jats:p>","DOI":"10.3390\/cryptography6010004","type":"journal-article","created":{"date-parts":[[2022,1,23]],"date-time":"2022-01-23T20:32:52Z","timestamp":1642969972000},"page":"4","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Network-Compatible Unconditionally Secured Classical Key Distribution via Quantum Superposition-Induced Deterministic Randomness"],"prefix":"10.3390","volume":"6","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3609-8508","authenticated-orcid":false,"given":"Byoung S.","family":"Ham","sequence":"first","affiliation":[{"name":"School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju 61005, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,1,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1","DOI":"10.53829\/ntr201108fa1","article-title":"Ultrahigh-speed ultrahigh-capacity transport network technology for cost-effective core and metro networks","volume":"9","author":"Matsuoka","year":"2011","journal-title":"NTT Tech. Rev."},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Arora, S., and Barak, B. (2009). Computational Complexity, Cambridge University Press.","DOI":"10.1017\/CBO9780511804090"},{"key":"ref_3","unstructured":"Swenson, C. (2008). Modern Cryptanalysis, Wiley."},{"key":"ref_4","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_5","doi-asserted-by":"crossref","unstructured":"Pljonkin, A., Petrov, D., Sabantina, L., and Dakhkilgova, K. (2021). Nonclassical Attack on a Quantum Key Distribution System. Entropy, 23.","DOI":"10.3390\/e23050509"},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Pljonkin, A.P. (2021). Vulnerability of the Synchronization Process in the Quantum Key Distribution System in Research Anthology on Advancements in Quantum Technology, IGI Global Commerce.","DOI":"10.4018\/978-1-7998-8593-1.ch015"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"120","DOI":"10.1145\/359340.359342","article-title":"A method for obtaining digital signatures and public-key cryptosystems","volume":"21","author":"Rivest","year":"1978","journal-title":"Commun. ACM"},{"key":"ref_8","first-page":"57","article-title":"Recommendation for Key Management Part 3: Application-Specific Key Management Guidance","volume":"800","author":"Barker","year":"2015","journal-title":"NIST Spec. Publ."},{"key":"ref_9","unstructured":"Papernot, N., McDaniel, P., Sinha, A., and Wellman, M. (2016). SoK: Towards the science of security and privacy in machine learning. arXiv."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"145","DOI":"10.1103\/RevModPhys.74.145","article-title":"Quantum cryptography","volume":"74","author":"Gisin","year":"2002","journal-title":"Rev. Mod. Phys."},{"key":"ref_11","first-page":"8","article-title":"Withdrawn: Quantum cryptography: Public key distribution and coin tossing","volume":"175","author":"Bennett","year":"2011","journal-title":"Theor. Comput. Sci."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"130406","DOI":"10.1103\/PhysRevLett.111.130406","article-title":"Detection-loophole-free test of quantum nonlocality and applications","volume":"111","author":"Christensen","year":"2013","journal-title":"Phys. Rev. Lett."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"012330","DOI":"10.1103\/PhysRevA.98.012330","article-title":"Quantum key distribution with distinguishable decoy states","volume":"98","author":"Huang","year":"2018","journal-title":"Phys. Rev. A"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"250505","DOI":"10.1103\/PhysRevLett.117.250505","article-title":"Insecurity of detector-device-independent quantum key distribution","volume":"117","author":"Sajeed","year":"2016","journal-title":"Phys. Rev. Lett."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"802","DOI":"10.1038\/299802a0","article-title":"A single quantum cannot be cloned","volume":"299","author":"Wootters","year":"1982","journal-title":"Nature"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"413","DOI":"10.1038\/35106500","article-title":"Long-distance quantum communication with atomic ensembles and linear optics","volume":"414","author":"Duan","year":"2001","journal-title":"Nature"},{"key":"ref_17","unstructured":"Vernam, G.S. (1919). Secrete Signaling System. (1,310,719), U.S. Patent."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"093012","DOI":"10.1088\/1367-2630\/aa8487","article-title":"Multi-partite entanglement can speed up quantum key distribution in networks","volume":"19","author":"Epping","year":"2017","journal-title":"New J. Phys."},{"key":"ref_19","first-page":"689","article-title":"Multi-partite quantum cryptographic protocols with noisy GHZ states","volume":"7","author":"Chen","year":"2007","journal-title":"Quantum Inf. Comput."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"10387","DOI":"10.1364\/OE.19.010387","article-title":"Field test of quatum key distribution in the Tokyo QKD network","volume":"19","author":"Sasaki","year":"2011","journal-title":"Opt. Exp."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"24260","DOI":"10.1364\/OE.26.024260","article-title":"Large scale quantum key distribution: Challenges and solutions [invited]","volume":"26","author":"Zhang","year":"2018","journal-title":"Opt. Exp."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"43","DOI":"10.1038\/nature23655","article-title":"Satellite-to-ground quantum key distribution","volume":"549","author":"Liao","year":"2017","journal-title":"Nature"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"11687","DOI":"10.1038\/s41598-020-68038-7","article-title":"Unconditionally secured classical cryptography using quantum superposition and unitary transformation","volume":"10","author":"Ham","year":"2020","journal-title":"Sci. Rep."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"1900","DOI":"10.1038\/s41598-021-81522-y","article-title":"Analysis of phase noise effects in a coupled Mach-Zhender interferometer for a much stabilized free-space optical link","volume":"11","author":"Ham","year":"2021","journal-title":"Sci. Rep."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"7309","DOI":"10.1038\/s41598-020-64441-2","article-title":"The origin of anticorrelation for photon bunching on a beam splitter","volume":"10","author":"Ham","year":"2020","journal-title":"Sci. Rep."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"22","DOI":"10.1063\/1.881360","article-title":"Multiparticle Interferometry and the Superposition Principle","volume":"46","author":"Greenberger","year":"1993","journal-title":"Phys. Today"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"1764","DOI":"10.1364\/OL.36.001764","article-title":"Stable single-photon interference in a 1 km fiber-optic Mach\u2013Zehnder interferometer with continuous phase adjustment","volume":"36","author":"Xavier","year":"2011","journal-title":"Opt. Lett."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"061102","DOI":"10.1103\/PhysRevLett.116.061102","article-title":"Observation of gravitational waves from binary black hole merger Phys","volume":"116","author":"Abbott","year":"2016","journal-title":"Rev. Lett."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"7639","DOI":"10.1364\/OPEX.13.007637","article-title":"Investigation of self-phase modulation based optical regeneration in single mode As2Se3 chalcogenide glass fiber","volume":"13","author":"Fu","year":"2005","journal-title":"Opt. Express."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"3121","DOI":"10.1103\/PhysRevLett.68.3121","article-title":"Quantum cryptography using any two nonorthogonal states","volume":"68","author":"Bennett","year":"1992","journal-title":"Phys. Rev. Lett."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"656","DOI":"10.1002\/j.1538-7305.1949.tb00928.x","article-title":"Communication Theory of Secrecy Systems","volume":"28","author":"Shannon","year":"1949","journal-title":"Bell Syst. Tech. J."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"486","DOI":"10.1109\/JLT.2011.2173793","article-title":"High-Capacity Space-Division-Multiplexed DWDM Transmissions Using Multicore Fiber","volume":"30","author":"Zhu","year":"2011","journal-title":"J. Light. Technol."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"79","DOI":"10.1119\/1.1286663","article-title":"An introduction to Pound\u2013Drever\u2013Hall laser frequency stabilization","volume":"69","author":"Black","year":"2001","journal-title":"Am. J. Phys."},{"key":"ref_34","first-page":"1101308","article-title":"Long-term stabilization of fiber laser using phase-locking technique with ul-tra-low phase noise and phase drift","volume":"20","author":"Hou","year":"2014","journal-title":"IEEE J. Sel. Top. Quantum Elec."}],"container-title":["Cryptography"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2410-387X\/6\/1\/4\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T22:05:36Z","timestamp":1760133936000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2410-387X\/6\/1\/4"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,1,21]]},"references-count":34,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2022,3]]}},"alternative-id":["cryptography6010004"],"URL":"https:\/\/doi.org\/10.3390\/cryptography6010004","relation":{},"ISSN":["2410-387X"],"issn-type":[{"value":"2410-387X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,1,21]]}}}