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Comment on the "Quantum Private Comparison Protocol Based on Bell Entangled States"

International Journal of Theoretical Physics, ISSN: 1572-9575, Vol: 53, Issue: 3, Page: 837-840
2014
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Article Description

Recently, Liu et al. proposed a quantum private comparison (QPC) based on Bell entangled states (Liu et al. in Commun. Theor. Phys. 57(4): 583, 2012). This paper points out a security loophole in Liu et al.'s protocol, in which the third party can disclose the private information of both users. In addition, an improvement is proposed to avoid the loophole. © 2013 Springer Science+Business Media New York.

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