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Cryptanalysis and Improvement of Quantum Secret Sharing Protocol between Multiparty and Multiparty with Single Photons and Unitary Transformations |
| LIN Song1, WEN Qiao-Yan2, LIU Xiao-Fen1 |
| 1Key Lab of Network Security and Cryptography, Fujian Normal University, Fuzhou 3500072State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876 |
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| Cite this article: |
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LIN Song, WEN Qiao-Yan, LIU Xiao-Fen 2009 Chin. Phys. Lett. 26 120307 |
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Abstract In a recent paper [Yan F L et al. Chin.Phys.Lett. 25(2008)1187], a quantum secret sharing the protocol between multiparty and multiparty with single photons and unitary transformations was presented. We analyze the security of the protocol and find that a dishonest participant can eavesdrop the key by using a special attack. Finally, we give a description of this strategy and put forward an improved version of this protocol which can stand against this kind of attack.
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| Keywords:
03.67.Dd
03.67.Hk
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Received: 02 June 2009
Published: 27 November 2009
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| PACS: |
03.67.Dd
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(Quantum cryptography and communication security)
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03.67.Hk
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(Quantum communication)
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