Comment on “Proactive quantum secret sharing”
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In the paper, Qin and Dai (Quantum Inf Process 14:4237–4244, 2015) proposed a proactive quantum secret sharing scheme. We study the security of the proposed scheme and find that it is not secure. In the distribution phase of the proposed scheme, two dishonest participants may collaborate to eavesdrop the secret of the dealer without introducing any error.
KeywordsEavesdropping Quantum secret sharing Bell state
The author Gao thanks his parents for their encouragements. This work is supported by the 2014-year Program for Excellent Youth Talents in University of Anhui Province, the Talent Scientific Research Fundation of Tongling University under grant No. 2015tlxyrc01 and the Program for Academic Leader Reserve Candidates in Tongling University under grant No. 2014tlxyxs30.