Scalable Multiparty Computation with Nearly Optimal Work and Resilience

  • Authors:
  • Ivan Damgård;Yuval Ishai;Mikkel Krøigaard;Jesper Buus Nielsen;Adam Smith

  • Affiliations:
  • University of Aarhus, Denmark;Technion and UCLA,;University of Aarhus, Denmark;University of Aarhus, Denmark;Pennsylvania State University, USA

  • Venue:
  • CRYPTO 2008 Proceedings of the 28th Annual conference on Cryptology: Advances in Cryptology
  • Year:
  • 2008

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Abstract

We present the first general protocol for secure multiparty computation in which the totalamount of work required by nplayers to compute a function fgrows only polylogarithmically with n(ignoring an additive term that depends on nbut not on the complexity of f). Moreover, the protocol is also nearly optimal in terms of resilience, providing computational security against an active, adaptive adversary corrupting a (1/2 茂戮驴 茂戮驴) fraction of the players, for an arbitrary 茂戮驴 0.