Journal
QUANTUM INFORMATION PROCESSING
Volume 17, Issue 2, Pages -Publisher
SPRINGER
DOI: 10.1007/s11128-017-1788-3
Keywords
Quantum private comparison; Malicious third party; Statistics attack
Funding
- Ministry of Science and Technology of the Republic of China, Taiwan [MOST 105-2221-E-006-162 -MY2]
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Recently, Sun et al. (Quantum Inf Process: 14:2125-2133, 2015) proposed a quantum private comparison protocol allowing two participants to compare the equality of their secrets via a malicious third party (TP). They designed an interesting trap comparison method to prevent the TP from knowing the final comparison result. However, this study shows that the malicious TP can use the statistics attack to reveal the comparison result. A simple modification is hence proposed to solve this problem.
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