Abstract
We propose a secure centralized multi-party quantum key distribution protocol based on four-particle GHZ state. Unlike centralized group session key generated by the third party, this paper uses an election algorithm to select initial participants, and the initial participants generate fairer centralized group session key, reducing dependence on the third party. Using the quantum resource GHZ state combined with unitary operations, a new encoding mode is used to quickly realize multi-party quantum key distribution, and the proposed protocol has lower time complexity. Theoretically, multi-particle GHZ state can be scaled for faster multi-party quantum key distribution. In addition, analysis and comparison show that the proposed protocol can resist common attacks and has feasible efficiency.
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Acknowledgements
This work was supported by the Chongqing Municipal Education Commission Science and Technology Research Program Youth Projects (Grant No. KJQN202202401).
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Chao-nan Wang and Hong-feng Zhu contribute to the research idea; Chao-nan Wang have made significant contributions to the analysis and manuscript preparation; Chao-nan Wang conduct data analysis and write manuscripts; Hong-feng Zhu helped with the analysis through constructive discussions;
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Wang, C., Zhu, H. A Secure Centralized Multi-Party Quantum Key Distribution Protocol with New Encoding Mode. Int J Theor Phys 62, 128 (2023). https://doi.org/10.1007/s10773-023-05398-6
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DOI: https://doi.org/10.1007/s10773-023-05398-6