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)‡
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
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.
Received: 29 October 2008
Revised: 05 December 2008
Accepted manuscript online:
Zhang Bin-Bin(张彬彬), Wang Da-Qing(王大庆), Huang Shan-Shan(黄珊珊), and Liu Yu(刘玉) Enhancing the security of quantum secret sharing against multiphoton attack 2009 Chin. Phys. B 18 2149
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