Constant-round multiparty computation using a black-box pseudorandom generator

  • Authors:
  • Ivan Damgård;Yuval Ishai

  • Affiliations:
  • Aarhus University;Technion

  • Venue:
  • CRYPTO'05 Proceedings of the 25th annual international conference on Advances in Cryptology
  • Year:
  • 2005

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Abstract

We present a constant-round protocol for general secure multiparty computation which makes a black-box use of a pseudorandom generator. In particular, the protocol does not require expensive zero-knowledge proofs and its communication complexity does not depend on the computational complexity of the underlying cryptographic primitive. Our protocol withstands an active, adaptive adversary corrupting a minority of the parties. Previous constant-round protocols of this type were only known in the semi-honest model or for restricted classes of functionalities.