Fair Computation of General Functions in Presence of Immoral Majority

  • Authors:
  • Shafi Goldwasser;Leonid A. Levin

  • Affiliations:
  • -;-

  • Venue:
  • CRYPTO '90 Proceedings of the 10th Annual International Cryptology Conference on Advances in Cryptology
  • Year:
  • 1990

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Abstract

This paper describes a method for n players, a majority of which may be faulty, to compute correctly, privately, and fairly any computable function f(x1,... ,xn) where xi, is the input of the i-th. player. The method uses as a building block an oblivious transfer primitive.Previous methods achieved these properties, only for boolean functions, which, in particular, precluded composition of such protocols.We also propose a simpler definition of security for multi-player protocols which still implies previous definitions of privacy and correctness.