Rational Secret Sharing Scheme Based on Reputation Mechanism
Liu Rong-fei · Journal of Guizhou University · 2012
Rational secret sharing is a new hot topic,which is generated at the intersection of game theory and traditional secret sharing.The players choose actions by maximizing their payoff in the rational secret sharing.It is easy to cause the empty threat and non-cooperation in the last round of the secret reconstruction phase.This paper proposed a rational secret sharing scheme based on analyzing the preference of rational players in the reputation system using game theory,and designing the reputation punishment mechanism with the incentive compatibility.It effectively restricts the behavior of the completely rational players by reputation punishment mechanism,and avoids the empty threat.Meanwhile,the secret was reconstructed by the highest reputation player that serves as trusted center.The proposed scheme effectively solves the problem of non-cooperation and collusion of each player in the secret reconstruction phase.