中国物理B ›› 2009, Vol. 18 ›› Issue (6): 2149-2153.doi: 10.1088/1674-1056/18/6/007

• GENERAL • 上一篇    下一篇

Enhancing the security of quantum secret sharing against multiphoton attack

张彬彬1, 王大庆1, 黄珊珊2, 刘玉2   

  1. (1)College of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; (2)Department of Electronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
  • 收稿日期:2008-10-29 修回日期:2008-12-05 出版日期:2009-06-20 发布日期:2009-06-20

Enhancing the security of quantum secret sharing against multiphoton attack

Zhang Bin-Bin(张彬彬)a)†, Wang Da-Qing(王大庆)a), Huang Shan-Shan(黄珊珊)b), and Liu Yu(刘玉)b)‡   

  1. a College of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; b Department of Electronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:2008-10-29 Revised:2008-12-05 Online:2009-06-20 Published:2009-06-20

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摘要： It is generally believed that nonorthogonal operations which can realize the state transformation between two nonorthogonal bases may ensure the security of many quantum communication protocols. However, in this paper, we present a powerful attack against quantum secret sharing protocols of these kinds. Applying entangled photons as fake signals, Eve can successfully steal the exact information without being revealed. We also give our effective modification to improve it. Under the suggested checking strategy, even to Eve's most general attack, it is robust and secure.

Abstract: It is generally believed that nonorthogonal operations which can realize the state transformation between two nonorthogonal bases may ensure the security of many quantum communication protocols. However, in this paper, we present a powerful attack against quantum secret sharing protocols of these kinds. Applying entangled photons as fake signals, Eve can successfully steal the exact information without being revealed. We also give our effective modification to improve it. Under the suggested checking strategy, even to Eve's most general attack, it is robust and secure.

Key words: quantum secret sharing, cryptanalysis, entangled photons, security

中图分类号:  (Quantum communication)

  • 03.67.Hk
03.65.Ud (Entanglement and quantum nonlocality) 42.50.Dv (Quantum state engineering and measurements)