Abstract
In Deng, Li, and Zhou (Phys. Lett. A 373:399, 2009), the authors propose two improved efficient high-capacity quantum secret sharing schemes to solve the problems existed in the Letter (Phys. Lett. A 372:1957, 2008), they claim that these two schemes are secure and efficient. However, we point out here that these two improved schemes are not secure as one agent can obtain all the information without the help from the other agent. We further modify this three-party quantum secret sharing scheme and make it really secure. In the end, we also give a method to generalize our quantum secret sharing scheme to arbitrary multi-party scheme.
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Zhu, ZC., Zhang, YQ. & Fu, AM. Comment on “Reply to Comment on ‘Efficient High-Capacity Quantum Secret Sharing with Two-Photon Entanglement’ ”. Int J Theor Phys 50, 308–313 (2011). https://doi.org/10.1007/s10773-010-0524-x
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DOI: https://doi.org/10.1007/s10773-010-0524-x