Two new Controlled not Gate Based Quantum Secret Sharing Protocols without Entanglement Attenuation |
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| Authors: | Zhen-Chao Zhu Ai-Qun Hu An-Min Fu |
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| Affiliation: | 1.Information Security Research Center,Southeast University,Nanjing,China;2.State Key Laboratory of Information Security, Institute of Information Engineering,Chinese Academy of Sciences,Beijing,China;3.School of Computer Science and Technology,Nanjing University of Science and Technology,Nanjing,China |
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| Abstract: | In this paper, we propose two new controlled not gate based quantum secret sharing protocols. In these two protocols, each photon only travels once, which guarantees the agents located in long distance can be able to derive the dealer’s secret without suffering entanglement attenuation problem. The protocols are secure against trojan horse attack, intercept-resend attack, entangle-measure attack and entanglement-swapping attack. The theoretical efficiency for qubits of these two protocols can approach 100 %, except those used for eavesdropping checking, all entangled states can be used for final secret sharing. |
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