Check out the new USENIX Web site.
USENIX, The Advanced Computing Systems Association

NSDI '08 Abstract

Pp. 175188 of the Proceedings

Nysiad: Practical Protocol Transformation to Tolerate Byzantine Failures

Chi Ho and Robbert van Renesse, Cornell University; Mark Bickford, ATC-NY; Danny Dolev, Hebrew University of Jerusalem

Abstract

The paper presents and evaluates Nysiad, a system that implements a new technique for transforming a scalable distributed system or network protocol tolerant only of crash failures into one that tolerates arbitrary failures, including such failures as freeloading and malicious attacks. The technique assigns to each host a certain number of guard hosts, optionally chosen from the available collection of hosts, and assumes that no more than a configurable number of guards of a host are faulty. Nysiad then enforces that a host either follows the system's protocol and handles all its inputs fairly, or ceases to produce output messages altogether--a behavior that the system tolerates. We have applied Nysiad to a link-based routing protocol and an overlay multicast protocol, and present measurements of running the resulting protocols on a simulated network.
  • View the full text of this paper in HTML and PDF. Listen to the presentation in MP3 format.

    The Proceedings are published as a collective work, 2008 by the USENIX Association. All Rights Reserved. Rights to individual papers remain with the author or the author's employer. Permission is granted for the noncommercial reproduction of the complete work for educational or research purposes. USENIX acknowledges all trademarks within this paper.
To become a USENIX member, please see our Membership Information.

Last changed: 11 Aug 2008 mn