| Improvement of Security of Three-Party Quantum Secure Direct Communication Based on GHZ States |
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| 引用本文： | 满忠晓 夏云杰. Improvement of Security of Three-Party Quantum Secure Direct Communication Based on GHZ States[J]. 中国物理快报, 2007, 24(1): 15-18 |
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| 作者姓名： | 满忠晓 夏云杰 |
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| 作者单位： | College of Physics and Engineering, Qufu Normal University, Qufu 273165 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 10534030. |
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| 摘 要： | A protocol for three-party quantum secure direct communication based on Greenberger-Horne-Zeilinger （GHZ） states was recently proposed by 3in et al. [Phys. Lett. A 354 （2006） 67] By analysing the protocol we find some security loopholes, e.g. one bit of secret messages of a party （Alice in the original paper） can always be leaked straight to the public without any eavesdropping. These problems suggested previously are discussed and possible solutions are presented to improve the security of the original protocol.
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| 关 键 词： | 安全性 指导 通信 物理 |
| 修稿时间： | 2006-08-10 |
Improvement of Security of Three-Party Quantum Secure Direct Communication Based on GHZ States |
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| MAN Zhong-Xiao,XIA Yun-Jie. Improvement of Security of Three-Party Quantum Secure Direct Communication Based on GHZ States[J]. Chinese Physics Letters, 2007, 24(1): 15-18 |
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| Authors: | MAN Zhong-Xiao XIA Yun-Jie |
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| Affiliation: | College of Physics and Engineering, Qufu Normal University, Qufu 273165 |
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| Abstract: | A protocol for three-party quantum secure direct communication based on Greenberger--Horne--Zeilinger (GHZ) states was recently proposed by Jin it et al. [Phys. Lett. A 354(2006)67] By analysing the protocol we find some security loopholes, e.g. one bit of secret messages of a party (Alice in the original paper) can always be leaked straight to the public without any eavesdropping. These problems suggested previously are discussed and possible solutions are presented to improve the security of the original protocol. |
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| Keywords: | 03.67.Hk 03.65.Ud |
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