Eavesdropping on the improved three-party quantum secret sharing protocol |
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| Authors: | Gan Gao |
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| Institution: | Department of Electrical Engineering, Tongling University, Tongling 244000, China |
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| Abstract: | Lin et al. Song Lin, Fei Gao, Qiao-yan Wen, Fu-chen Zhu, Opt. Commun. 281 (2008) 4553] pointed out that the multiparty quantum secret sharing protocol Zhan-jun Zhang, Gan Gao, Xin Wang, Lian-fang Han, Shou-hua Shi, Opt. Commun. 269 (2007) 418] is not secure and proposed an improved three-party quantum secret sharing protocol. In this paper, we study the security of the improved three-party quantum secret sharing protocol and find that it is still not secure. Finally, a further improved three-party quantum secret sharing protocol is proposed. |
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| Keywords: | Bell state comparison Entanglement swapping Quantum secret sharing |
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