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Cryptanalysis of Quantum Secure Direct Communication and Authentication Scheme via Bell States |
| GAO Fei**, QIN Su-Juan, GUO Fen-Zhuo, WEN Qiao-Yan
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State 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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GAO Fei, QIN Su-Juan, GUO Fen-Zhuo et al 2011 Chin. Phys. Lett. 28 020303 |
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Abstract The security of the quantum secure direct communication (QSDC) and authentication protocol based on Bell states is analyzed. It is shown that an eavesdropper can invalidate the authentication function, and implement a successful man-in-the-middle attack, where he/she can obtain or even modify the transmitted secret without introducing any error. The particular attack strategy is demonstrated and an improved protocol is presented.
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| Keywords:
03.67.Hk
03.65.Ud
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Received: 07 July 2010
Published: 30 January 2011
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| PACS: |
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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