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Improving the security of multiparty quantum secret splitting and quantum state sharing

Hong-Fu Wang·Xin Ji·Shou Zhang
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Abstract

A protocol for multiparty quantum secret splitting (MQSS) with an ordered $N$ Einstein-Podolsky-Rosen (EPR) pairs and Bell state measurements is recently proposed by Deng {\rm et al.} [Phys. Lett. A 354(2006)190]. We analyzed the security of the protocol and found that this protocol is secure for any other eavesdropper except for the agent Bob who adopts intercept-and-resend attack. Bob can obtain all the information of Alice's alone without being found. We also propose an improved version of the MQSS protocol.

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Hong-Fu Wang, Xin Ji, Shou Zhang. 2006-05-06. Improving the security of multiparty quantum secret splitting and quantum state sharing. https://doi.org/10.1016/j.physleta.2006.04.110

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