Abstract
We propose a new quantum private comparison protocol with the help of a semi-honest third party (TP), enabling two participants to compare the equality of their private inputs without exposing any information about their respective private inputs. Different from previous protocols, our protocol utilizes the properties of entanglement swapping between three-particle W-Class state and Bell state. The presented protocol can ensure correctness, fairness and security. Meanwhile, all the quantum particles undergo a one-way transmission, and all the participants including TP are just required having the ability to perform Bell-state measurement and exclusive-or operation which make our protocol more feasible and efficient. At last, the security of this protocol with respect to various kinds of attacks is analyzed in detail.
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Acknowledgments
This work is supported by the National Natural Science Foundation of China (Grant No. 61472048, No. 61402058, No. 61472046, No. 61202082, No. 61370194), the Beijing Natural Science Foundation (4152038), the China Postdoctoral Science Foundation funded project No. 2014M561826.
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Li, J., Jia, L., Zhou, HF. et al. Secure Quantum Private Comparison Protocol Based on the Entanglement Swapping Between Three-Particle W-Class State and Bell State. Int J Theor Phys 55, 1710–1718 (2016). https://doi.org/10.1007/s10773-015-2810-0
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DOI: https://doi.org/10.1007/s10773-015-2810-0