›› 2014, Vol. 23 ›› Issue (8): 80303-080303.doi: 10.1088/1674-1056/23/8/080303

• GENERAL • 上一篇    下一篇

Security of a practical semi-device-independent quantum key distribution protocol against collective attacks

汪洋a b, 鲍皖苏a b, 李宏伟a b, 周淳a b, 李源a b   

  1. 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
  • 收稿日期:2013-11-08 修回日期:2014-01-06 出版日期:2014-08-15 发布日期:2014-08-15
  • 基金资助:
    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).

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   

  1. 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
  • Received:2013-11-08 Revised:2014-01-06 Online:2014-08-15 Published:2014-08-15
  • Contact: Bao Wan-Su E-mail:2010thzz@sina.com
  • Supported by:
    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).

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摘要： 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.

关键词: quantum key distribution, semi-device-independent, collective attacks, secret key rate

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.

Key words: quantum key distribution, semi-device-independent, collective attacks, secret key rate

中图分类号:  (Quantum cryptography and communication security)

  • 03.67.Dd
03.67.Hk (Quantum communication)