Abstract
Semi-quantum private comparison, which authorizes two classical participants to compare the equality of their private information with the cooperation of a semi-honest third party without unveiling privacy. The W-state is more robust against the loss of any single qubit than the GHZ state. In this paper, an efficient and secure semi-quantum private comparison protocol based on W-state is proposed for the first time. The qubit efficiency comparison shows the proposed protocol is more efficient than the similar literature. Moreover, the security of the devised protocol concerning various kinds of outside attack and inside attack is discussed. The security analysis demonstrates that outside eavesdropper, inside dishonest participant and semi-honest third party cannot obtain any private information.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China under Grant 92046001, 61962009, the Fundamental Research Funds for the Central Universities under Grant 2019XD-A02, the Open Research Project of the State Key Laboratory of Media Convergence and Communication under Grant KLMCC2020KF006. We also would like to thank the anonymous reviewers for their detailed review and valuable comments, which have enhanced the quality of this paper.
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Tian, Y., Li, J., Ye, C. et al. W-state-based Semi-quantum Private Comparison. Int J Theor Phys 61, 18 (2022). https://doi.org/10.1007/s10773-022-05005-0
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DOI: https://doi.org/10.1007/s10773-022-05005-0