Comment on "Information Leak in Liu et al.'s Quantum Private Comparison and a New Protocol"

被引：0
|
作者：
Wang, Hai-Bin [1 ,2 ]
Liu, Wen-Jie [1 ,2 ]
Chen, Han-Wu [3 ]
Liu, Zhi-Hao [3 ]
机构：
[1] Nanjing Univ Informat Sci Technol, Jiangsu Engn Ctr Network Monitoring, Nanjing 210044, Peoples R China
[2] Nanjing Univ Informat Sci Technol, Sch Comp & Software, Nanjing 210044, Peoples R China
[3] Southeast Univ, Sch Comp Sci & Engn, Nanjing 211189, Peoples R China
来源：
CHINESE JOURNAL OF PHYSICS | 2015年 / 53卷 / 05期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.6122/CJP.20150817
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Recently, a quantum private comparison with equality (QPCE) protocol based on the W state was proposed [W. Liu, Y. B. Wang, and Z. T. Jiang, Opt. Commun. 284, 3160 (2011)], However, Li et al. pointed out that there was a flaw of information leak and proposed a new protocol with EPR pairs [Y. B. Li et al., Eur. Phys. J. D. 66, 110 (2012)]. To fix the flaw, we improve Liu et al.'s protocol by using a special asymmetric W state. Besides, we also find there exists a security loophole in Li et al.'s new protocol, and a feasible solution is presented to fix the loophole.
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页数：4
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