Cryptanalysis and Improvement of a Quantum Network System of QSS-QDC Using χ-Type Entangled States
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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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GAO Gan, FANG Ming, CHENG Mu-Tian. Cryptanalysis and Improvement of a Quantum Network System of QSS-QDC Using χ-Type Entangled States[J]. Chin. Phys. Lett., 2012, 29(11): 110305. DOI: 10.1088/0256-307X/29/11/110305
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GAO Gan, FANG Ming, CHENG Mu-Tian. Cryptanalysis and Improvement of a Quantum Network System of QSS-QDC Using χ-Type Entangled States[J]. Chin. Phys. Lett., 2012, 29(11): 110305. DOI: 10.1088/0256-307X/29/11/110305
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GAO Gan, FANG Ming, CHENG Mu-Tian. Cryptanalysis and Improvement of a Quantum Network System of QSS-QDC Using χ-Type Entangled States[J]. Chin. Phys. Lett., 2012, 29(11): 110305. DOI: 10.1088/0256-307X/29/11/110305
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GAO Gan, FANG Ming, CHENG Mu-Tian. Cryptanalysis and Improvement of a Quantum Network System of QSS-QDC Using χ-Type Entangled States[J]. Chin. Phys. Lett., 2012, 29(11): 110305. DOI: 10.1088/0256-307X/29/11/110305
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