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Nonclassical Attack on a Quantum Key Distribution System

The article is focused on research of an attack on the quantum key distribution system and proposes a countermeasure method. Particularly noteworthy is that this is not a classic attack on a quantum protocol. We describe an attack on the process of calibration. Results of the research show that quan...

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Autores principales: Pljonkin, Anton, Petrov, Dmitry, Sabantina, Lilia, Dakhkilgova, Kamila
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8146243/
https://www.ncbi.nlm.nih.gov/pubmed/33922561
http://dx.doi.org/10.3390/e23050509
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author Pljonkin, Anton
Petrov, Dmitry
Sabantina, Lilia
Dakhkilgova, Kamila
author_facet Pljonkin, Anton
Petrov, Dmitry
Sabantina, Lilia
Dakhkilgova, Kamila
author_sort Pljonkin, Anton
collection PubMed
description The article is focused on research of an attack on the quantum key distribution system and proposes a countermeasure method. Particularly noteworthy is that this is not a classic attack on a quantum protocol. We describe an attack on the process of calibration. Results of the research show that quantum key distribution systems have vulnerabilities not only in the protocols, but also in other vital system components. The described type of attack does not affect the cryptographic strength of the received keys and does not point to the vulnerability of the quantum key distribution protocol. We also propose a method for autocompensating optical communication system development, which protects synchronization from unauthorized access. The proposed method is based on the use of sync pulses attenuated to a photon level in the process of detecting a time interval with a signal. The paper presents the results of experimental studies that show the discrepancies between the theoretical and real parameters of the system. The obtained data allow the length of the quantum channel to be calculated with high accuracy.
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spelling pubmed-81462432021-05-26 Nonclassical Attack on a Quantum Key Distribution System Pljonkin, Anton Petrov, Dmitry Sabantina, Lilia Dakhkilgova, Kamila Entropy (Basel) Article The article is focused on research of an attack on the quantum key distribution system and proposes a countermeasure method. Particularly noteworthy is that this is not a classic attack on a quantum protocol. We describe an attack on the process of calibration. Results of the research show that quantum key distribution systems have vulnerabilities not only in the protocols, but also in other vital system components. The described type of attack does not affect the cryptographic strength of the received keys and does not point to the vulnerability of the quantum key distribution protocol. We also propose a method for autocompensating optical communication system development, which protects synchronization from unauthorized access. The proposed method is based on the use of sync pulses attenuated to a photon level in the process of detecting a time interval with a signal. The paper presents the results of experimental studies that show the discrepancies between the theoretical and real parameters of the system. The obtained data allow the length of the quantum channel to be calculated with high accuracy. MDPI 2021-04-23 /pmc/articles/PMC8146243/ /pubmed/33922561 http://dx.doi.org/10.3390/e23050509 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Pljonkin, Anton
Petrov, Dmitry
Sabantina, Lilia
Dakhkilgova, Kamila
Nonclassical Attack on a Quantum Key Distribution System
title Nonclassical Attack on a Quantum Key Distribution System
title_full Nonclassical Attack on a Quantum Key Distribution System
title_fullStr Nonclassical Attack on a Quantum Key Distribution System
title_full_unstemmed Nonclassical Attack on a Quantum Key Distribution System
title_short Nonclassical Attack on a Quantum Key Distribution System
title_sort nonclassical attack on a quantum key distribution system
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8146243/
https://www.ncbi.nlm.nih.gov/pubmed/33922561
http://dx.doi.org/10.3390/e23050509
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