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Cryptanalysis and Improvement of a Quantum Network System of QSS-QDC Using χ-Type Entangled States

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2012 Chinese Physical Society and IOP Publishing Ltd
, , Citation Gao Gan et al 2012 Chinese Phys. Lett. 29 110305 DOI 10.1088/0256-307X/29/11/110305

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1 Department of Electrical Engineering, Tongling University, Tongling 244000

2 Jiang Huai College of Anhui University, Hefei 230031

3 School of Electrical Engineering and Information, Anhui University of Technology, Maanshan 243002

Dates

  1. Received 31 May 2012
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0256-307X/29/11/110305

Abstract

In the paper [Chin. Phys. Lett. 29 (2012) 050303] of Hong et al., two quantum secret sharing protocols were proposed. We study the security of the second protocol and find that it is insecure. Acting as the communication center, Trent may eavesdrop Alice's secret messages without introducing any error. Finally, a feasible improvement of the second protocol is given.

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10.1088/0256-307X/29/11/110305