Abstract
We present a new multi-party quantum private comparison protocol based on d-dimensional basis states. Different from previous protocols, our protocol have some advantages. n parties can determine wether their private information are equal or not in one time execution of our protocol. Without using the entangled character of d-dimensional basis states, we only need to perform the local unitary operation on particles to encode the information and to get the comparison result. We also discuss that our protocol can withstand various kinds of outside attacks and participant attacks.
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Acknowledgements
We would like to thank the anonymous reviewer for helpful suggestions. This paper is supported by the High Technology Research and Development Program of China (863 Program, 2011AA01A107) and the National Key Technology Research and Development Program of the Ministry of Science and Technology of China (Grant No. 2012BAH37F02-02).
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Liu, W., Wang, YB. & Wang, XM. Multi-party Quantum Private Comparison Protocol Using d-Dimensional Basis States Without Entanglement Swapping. Int J Theor Phys 53, 1085–1091 (2014). https://doi.org/10.1007/s10773-013-1903-x
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DOI: https://doi.org/10.1007/s10773-013-1903-x