Lightweight mediated semi-quantum key distribution protocol with a dishonest third party based on Bell states

Abstract The mediated semi-quantum key distribution (MSQKD) protocol is an important research issue that lets two classical participants share secret keys securely between each other with the help of a third party (TP). However, in the existing MSQKD protocols, there are two improvable issues, namel...

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Autores principales:	Chia-Wei Tsai, Chun-Wei Yang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1b1649ec65a246cb9930d8896208465c
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spelling	oai:doaj.org-article:1b1649ec65a246cb9930d8896208465c2021-12-05T12:14:12ZLightweight mediated semi-quantum key distribution protocol with a dishonest third party based on Bell states10.1038/s41598-021-02614-32045-2322https://doaj.org/article/1b1649ec65a246cb9930d8896208465c2021-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-02614-3https://doaj.org/toc/2045-2322Abstract The mediated semi-quantum key distribution (MSQKD) protocol is an important research issue that lets two classical participants share secret keys securely between each other with the help of a third party (TP). However, in the existing MSQKD protocols, there are two improvable issues, namely (1) the classical participants must be equipped with expensive detectors to avoid Trojan horse attacks and (2) the trustworthiness level of TP must be honest. To the best of our knowledge, none of the existing MSQKD protocols can resolve both these issues. Therefore, this study takes Bell states as the quantum resource to propose a MSQKD protocol, in which the classical participants do not need a Trojan horse detector and the TP is dishonest. Furthermore, the proposed protocol is shown to be secure against well-known attacks and the classical participants only need two quantum capabilities. Therefore, in comparison to the existing MSQKD protocols, the proposed protocol is better practical.Chia-Wei TsaiChun-Wei YangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Chia-Wei Tsai Chun-Wei Yang Lightweight mediated semi-quantum key distribution protocol with a dishonest third party based on Bell states
description	Abstract The mediated semi-quantum key distribution (MSQKD) protocol is an important research issue that lets two classical participants share secret keys securely between each other with the help of a third party (TP). However, in the existing MSQKD protocols, there are two improvable issues, namely (1) the classical participants must be equipped with expensive detectors to avoid Trojan horse attacks and (2) the trustworthiness level of TP must be honest. To the best of our knowledge, none of the existing MSQKD protocols can resolve both these issues. Therefore, this study takes Bell states as the quantum resource to propose a MSQKD protocol, in which the classical participants do not need a Trojan horse detector and the TP is dishonest. Furthermore, the proposed protocol is shown to be secure against well-known attacks and the classical participants only need two quantum capabilities. Therefore, in comparison to the existing MSQKD protocols, the proposed protocol is better practical.
format	article
author	Chia-Wei Tsai Chun-Wei Yang
author_facet	Chia-Wei Tsai Chun-Wei Yang
author_sort	Chia-Wei Tsai
title	Lightweight mediated semi-quantum key distribution protocol with a dishonest third party based on Bell states
title_short	Lightweight mediated semi-quantum key distribution protocol with a dishonest third party based on Bell states
title_full	Lightweight mediated semi-quantum key distribution protocol with a dishonest third party based on Bell states
title_fullStr	Lightweight mediated semi-quantum key distribution protocol with a dishonest third party based on Bell states
title_full_unstemmed	Lightweight mediated semi-quantum key distribution protocol with a dishonest third party based on Bell states
title_sort	lightweight mediated semi-quantum key distribution protocol with a dishonest third party based on bell states
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/1b1649ec65a246cb9930d8896208465c
work_keys_str_mv	AT chiaweitsai lightweightmediatedsemiquantumkeydistributionprotocolwithadishonestthirdpartybasedonbellstates AT chunweiyang lightweightmediatedsemiquantumkeydistributionprotocolwithadishonestthirdpartybasedonbellstates
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Lightweight mediated semi-quantum key distribution protocol with a dishonest third party based on Bell states

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