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1.8.5 Secure Multi-Party Computation (MPC)

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The MPC refers to a multi-user practice that allocates users to perform joint computation with their concealed facts inputs, not infringement respective input data confidentiality. Here, there is no chance for any opponent to learn the input of an authentic party. The accomplishment of applying MPC in distributed voting, personal request, and personal data recovery has made it a well-liked resolution to numerous real-world troubles. In the last few years, MPC has been broadly applied in blockchain schemes to guard the abuser’s privacy. In [10], Andrychowicz et al. proposed a Bitcoin system with MPC protocol for secured multi-user lotteries without any trusted central authority. If an abuser infringes or hampers with the procedure, then he/she turns into a loser; moreover, her/his Bitcoins are transmitted to the sincere/truthful abusers.

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