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2018 ; 8
(1
): 11115
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Rational quantum secret sharing
#MMPMID30042486
Qin H
; Tang WKS
; Tso R
Sci Rep
2018[Jul]; 8
(1
): 11115
PMID30042486
show ga
The traditional quantum secret sharing does not succeed in the presence of
rational participants. A rational participant's motivation is to maximize his
utility, and will try to get the secret alone. Therefore, in the reconstruction,
no rational participant will send his share to others. To tackle with this
problem, we propose a rational quantum secret sharing scheme in this paper. We
adopt the game theory to analyze the behavior of rational participants and design
a protocol to prevent them from deviating from the protocol. As proved, the
rational participants can gain their maximal utilities when they perform the
protocol faithfully, and the Nash equilibrium of the protocol is achieved.
Compared to the traditional quantum secret sharing schemes, our scheme is fairer
and more robust in practice.