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Cryptanalysis and Improvement of a Quantum Secret Sharing Protocol between Multiparty and Multiparty with Single Photons and Unitary Transformations |
ZHU Zhen-Chao1,2, ZHANG Yu-Qing2 |
| 1Key Lab of Computer Networks and Information Security of Ministry of Education, Xidian University, Xi'an 710071 2National Computer Network Intrusion Protection Center, Graduate University, Chinese Academy of Sciences, Beijing 100049 |
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| Cite this article: |
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ZHU Zhen-Chao, ZHANG Yu-Qing 2010 Chin. Phys. Lett. 27 060303 |
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Abstract In a recent paper [Chin. Phys. Lett 25(2008)1187], a quantum secret sharing scheme between multiparty and multiparty was presented. We show that the protocol is not secure because the last member in Alice's group can illegally obtain most secret messages without introducing any error. Finally, a possible way to avoid the security flaw is suggested.
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| Keywords:
03.67.Dd
03.67.HK
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Received: 10 November 2009
Published: 25 May 2010
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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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