Efficient Mediated Multiparty Semi-Quantum Secret Sharing Protocol Based on Single-Qubit Reordering

Fuente: arXiv
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Autori principali: Younes, Mustapha Anis, Zebboudj, Sofia, Gharbi, Abdelhakim
Natura: Preprint
Pubblicazione: 2025
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author Younes, Mustapha Anis
Zebboudj, Sofia
Gharbi, Abdelhakim
author_facet Younes, Mustapha Anis
Zebboudj, Sofia
Gharbi, Abdelhakim
contents Typical multiparty semi-quantum secret sharing (MSQSS) protocols require the dealer to possess full quantum capabilities, while the classical users usually need to perform three operations. To address this practical limitation, this paper introduces a new mediated MSQSS protocol that enables Alice, a classical user, to share a secret with $M$ classical Bobs, with the assistance of an untrusted third party (TP) who may attempt any possible attack to steal Alice's secret. Furthermore, the classical participants require only two capabilities instead of three, namely: (a) performing measurements in the $Z$ basis; and (b) reordering qubits. The proposed scheme offers significant advantages over existing mediated QSS protocols: (1) it is the first mediated SQSS protocol to adopt single qubits, instead of entangled states, as the quantum resource, which makes it more practical and easier to implement; (2) It achieves higher qubit efficiency. Security analysis also demonstrates that the protocol is secure against well-known attacks.
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id arxiv_https___arxiv_org_abs_2508_05487
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Efficient Mediated Multiparty Semi-Quantum Secret Sharing Protocol Based on Single-Qubit Reordering
Younes, Mustapha Anis
Zebboudj, Sofia
Gharbi, Abdelhakim
Quantum Physics
Typical multiparty semi-quantum secret sharing (MSQSS) protocols require the dealer to possess full quantum capabilities, while the classical users usually need to perform three operations. To address this practical limitation, this paper introduces a new mediated MSQSS protocol that enables Alice, a classical user, to share a secret with $M$ classical Bobs, with the assistance of an untrusted third party (TP) who may attempt any possible attack to steal Alice's secret. Furthermore, the classical participants require only two capabilities instead of three, namely: (a) performing measurements in the $Z$ basis; and (b) reordering qubits. The proposed scheme offers significant advantages over existing mediated QSS protocols: (1) it is the first mediated SQSS protocol to adopt single qubits, instead of entangled states, as the quantum resource, which makes it more practical and easier to implement; (2) It achieves higher qubit efficiency. Security analysis also demonstrates that the protocol is secure against well-known attacks.
title Efficient Mediated Multiparty Semi-Quantum Secret Sharing Protocol Based on Single-Qubit Reordering
topic Quantum Physics
url https://arxiv.org/abs/2508.05487