Improvement and Flexible Multiparty Extension of Semi-Quantum Key Agreement Protocol

Zhou et al. (Int. J. Theor. Phys. 59, 663-676 2020 ) introduced a three-party semi-quantum key agreement protocol utilizing four-qubit cluster states. However, we found it has security vulnerabilities, quantum resource wastage, and limitations on the number of participants. To address these concerns...

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Bibliographic Details
Published in:International journal of theoretical physics 2023-11, Vol.62 (11), Article 252
Main Authors: Xu, Xuejiao, Lou, Xiaoping
Format: Article
Language:English
Subjects:
Elementary Particles
Mathematical and Computational Physics
Physics
Physics and Astronomy
Quantum Field Theory
Quantum Physics
Theoretical
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Summary:Zhou et al. (Int. J. Theor. Phys. 59, 663-676 2020 ) introduced a three-party semi-quantum key agreement protocol utilizing four-qubit cluster states. However, we found it has security vulnerabilities, quantum resource wastage, and limitations on the number of participants. To address these concerns, we propose an improved protocol using GHZ-like states, which can resist double C-Not attack and conserve quantum resources. Additionally, we extend the improved scheme to multiparty key agreement in circle-type, which offers high efficiency and is well-suited for flexible dynamic networks.
ISSN:1572-9575
1572-9575
DOI:10.1007/s10773-023-05504-8