| COMMENTS AND ERRATA |
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Comment on "A Quantum Network System of QSS-QDC Using χ-Type Entangled States" [Chin. Phys. Lett. 29 (2012) 050303] |
| LIU Zhi-Hao1, CHEN Han-Wu1**, LIU Wen-Jie2, XU Juan1 |
1School of Computer Science and Engineering, Southeast University, Nanjing 211189
2School of Computer and Software, Nanjing University of Information Science & Technology, Nanjing 210044
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| Cite this article: |
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LIU Zhi-Hao, CHEN Han-Wu, LIU Wen-Jie et al 2013 Chin. Phys. Lett. 30 039901 |
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Abstract Two quantum secret sharing (QSS) protocols in a multiuser quantum direct communication (QDC) network system were put forward by Hong et al. [Chin. Phys. Lett. 29 (2012) 050303]. However, we find that either agent (Bob or Charlie) alone can obtain half the information about the sender's secret without collaboration with the other, which does not satisfy the security requirement of QSS. Moreover, the secret message sent by Alice in the second protocol can be eavesdropped on or its communication can be disturbed by the builder of quantum channels (Trent).
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Received: 22 May 2012
Published: 29 March 2013
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| PACS: |
99.10.-x
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(Errata and other corrections)
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03.67.Hk
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(Quantum communication)
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03.67.Dd
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(Quantum cryptography and communication security)
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03.67.Ac
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(Quantum algorithms, protocols, and simulations)
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Abstract
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