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Efficient Quantum Secure Direct Communication with Authentication |
| LIU Wen-Jie1,2 ,CHEN Han-Wu1, LI Zhi-Qiang1, LIU Zhi-Hao1 |
| 1School of Computer Science and Engineering, Southeast University, Nanjing 2100962School of Computer and Software, Nanjing University of Information Science and Technology, Nanjing 210044 |
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| Cite this article: |
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LIU Wen-Jie, CHEN Han-Wu, LI Zhi-Qiang et al 2008 Chin. Phys. Lett. 25 2354-2357 |
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Abstract Two protocols of quantum direct communication with authentication [Phys. Rev. A 73 (2006) 042305] were recently indicated to be insecure against the authenticator Trent attacks [Phys. Rev. A 75 (2007) 026301]. We present two efficient protocols by using four Pauli operations, which are secure against inner Trent attacks as well as outer Eve attacks. Finally, we generalize them to multiparty quantum direction communication.
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| Keywords:
03.67.Dd
03.67.Hk
03.65.Ud
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Received: 12 December 2007
Published: 26 June 2008
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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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03.65.Ud
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(Entanglement and quantum nonlocality)
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