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Security of a practical semi-device-independent quantum key distribution protocol against collective attacks |
| Wang Yang (汪洋)a b, Bao Wan-Su (鲍皖苏)a b, Li Hong-Wei (李宏伟)a b, Zhou Chun (周淳)a b, Li Yuan (李源)a b |
a Institute of Cryptographic Engineering, The PLA Information Engineering University, Zhengzhou 450001, China;
b Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China |
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Abstract Similar to device-independent quantum key distribution (DI-QKD), semi-device-independent quantum key distribution (SDI-QKD) provides secure key distribution without any assumptions about the internal workings of the QKD devices. The only assumption is that the dimension of the Hilbert space is bounded. But SDI-QKD can be implemented in a one-way prepare-and-measure configuration without entanglement compared with DI-QKD. We propose a practical SDI-QKD protocol with four preparation states and three measurement bases by considering the maximal violation of dimension witnesses and specific processes of a QKD protocol. Moreover, we prove the security of the SDI-QKD protocol against collective attacks based on the min-entropy and dimension witnesses. We also show a comparison of the secret key rate between the SDI-QKD protocol and the standard QKD.
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Received: 08 November 2013
Revised: 06 January 2014
Accepted manuscript online:
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PACS:
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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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| Fund: Project supported by the National Basic Research Program of China (Grant No. 2013CB338002) and the National Natural Science Foundation of China (Grant Nos. 11304397 and 11204379). |
Corresponding Authors:
Bao Wan-Su
E-mail: 2010thzz@sina.com
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Cite this article:
Wang Yang (汪洋), Bao Wan-Su (鲍皖苏), Li Hong-Wei (李宏伟), Zhou Chun (周淳), Li Yuan (李源) Security of a practical semi-device-independent quantum key distribution protocol against collective attacks 2014 Chin. Phys. B 23 080303
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