Fully Polynomial Byzantine Agreement for Processors in Rounds

  • Authors:
  • Juan A. Garay;Yoram Moses

  • Affiliations:
  • -;-

  • Venue:
  • SIAM Journal on Computing
  • Year:
  • 1998

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Abstract

This paper presents a polynomial-time protocol for reaching Byzantine agreement in t + 1 rounds whenever n 3t, where n is the number of processors and t is an a priori upper bound on the number of failures. This resolves an open problem presented by Pease, Shostak, and Lamport in 1980. An early-stopping variant of this protocol is also presented, reaching agreement in a number of rounds that is proportional to the number of processors that actually fail.