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Loss-tolerant measurement-device-independent quantum private queries

Quantum private queries (QPQ) is an important cryptography protocol aiming to protect both the user’s and database’s privacy when the database is queried privately. Recently, a variety of practical QPQ protocols based on quantum key distribution (QKD) have been proposed. However, for QKD-based QPQ t...

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Detalles Bibliográficos
Autores principales: Zhao, Liang-Yuan, Yin, Zhen-Qiang, Chen, Wei, Qian, Yong-Jun, Zhang, Chun-Mei, Guo, Guang-Can, Han, Zheng-Fu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5209688/
https://www.ncbi.nlm.nih.gov/pubmed/28051101
http://dx.doi.org/10.1038/srep39733
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author Zhao, Liang-Yuan
Yin, Zhen-Qiang
Chen, Wei
Qian, Yong-Jun
Zhang, Chun-Mei
Guo, Guang-Can
Han, Zheng-Fu
author_facet Zhao, Liang-Yuan
Yin, Zhen-Qiang
Chen, Wei
Qian, Yong-Jun
Zhang, Chun-Mei
Guo, Guang-Can
Han, Zheng-Fu
author_sort Zhao, Liang-Yuan
collection PubMed
description Quantum private queries (QPQ) is an important cryptography protocol aiming to protect both the user’s and database’s privacy when the database is queried privately. Recently, a variety of practical QPQ protocols based on quantum key distribution (QKD) have been proposed. However, for QKD-based QPQ the user’s imperfect detectors can be subjected to some detector- side-channel attacks launched by the dishonest owner of the database. Here, we present a simple example that shows how the detector-blinding attack can damage the security of QKD-based QPQ completely. To remove all the known and unknown detector side channels, we propose a solution of measurement-device-independent QPQ (MDI-QPQ) with single- photon sources. The security of the proposed protocol has been analyzed under some typical attacks. Moreover, we prove that its security is completely loss independent. The results show that practical QPQ will remain the same degree of privacy as before even with seriously uncharacterized detectors.
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spelling pubmed-52096882017-01-05 Loss-tolerant measurement-device-independent quantum private queries Zhao, Liang-Yuan Yin, Zhen-Qiang Chen, Wei Qian, Yong-Jun Zhang, Chun-Mei Guo, Guang-Can Han, Zheng-Fu Sci Rep Article Quantum private queries (QPQ) is an important cryptography protocol aiming to protect both the user’s and database’s privacy when the database is queried privately. Recently, a variety of practical QPQ protocols based on quantum key distribution (QKD) have been proposed. However, for QKD-based QPQ the user’s imperfect detectors can be subjected to some detector- side-channel attacks launched by the dishonest owner of the database. Here, we present a simple example that shows how the detector-blinding attack can damage the security of QKD-based QPQ completely. To remove all the known and unknown detector side channels, we propose a solution of measurement-device-independent QPQ (MDI-QPQ) with single- photon sources. The security of the proposed protocol has been analyzed under some typical attacks. Moreover, we prove that its security is completely loss independent. The results show that practical QPQ will remain the same degree of privacy as before even with seriously uncharacterized detectors. Nature Publishing Group 2017-01-04 /pmc/articles/PMC5209688/ /pubmed/28051101 http://dx.doi.org/10.1038/srep39733 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Zhao, Liang-Yuan
Yin, Zhen-Qiang
Chen, Wei
Qian, Yong-Jun
Zhang, Chun-Mei
Guo, Guang-Can
Han, Zheng-Fu
Loss-tolerant measurement-device-independent quantum private queries
title Loss-tolerant measurement-device-independent quantum private queries
title_full Loss-tolerant measurement-device-independent quantum private queries
title_fullStr Loss-tolerant measurement-device-independent quantum private queries
title_full_unstemmed Loss-tolerant measurement-device-independent quantum private queries
title_short Loss-tolerant measurement-device-independent quantum private queries
title_sort loss-tolerant measurement-device-independent quantum private queries
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5209688/
https://www.ncbi.nlm.nih.gov/pubmed/28051101
http://dx.doi.org/10.1038/srep39733
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