License: Creative Commons Attribution 4.0 International license (CC BY 4.0)
When quoting this document, please refer to the following
DOI: 10.4230/LIPIcs.OPODIS.2022.18
URN: urn:nbn:de:0030-drops-176385
URL: http://dagstuhl.sunsite.rwth-aachen.de/volltexte/2023/17638/
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Cohen, Shir ; Keidar, Idit ; Spiegelman, Alexander

Make Every Word Count: Adaptive Byzantine Agreement with Fewer Words

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LIPIcs-OPODIS-2022-18.pdf (0.7 MB)

Abstract

Byzantine Agreement (BA) is a key component in many distributed systems. While Dolev and Reischuk have proven a long time ago that quadratic communication complexity is necessary for worst-case runs, the question of what can be done in practically common runs with fewer failures remained open. In this paper we present the first Byzantine Broadcast algorithm with O(n(f+1)) communication complexity in a model with resilience of n = 2t+1, where 0 ≤ f ≤ t is the actual number of process failures in a run. And for BA with strong unanimity, we present the first optimal-resilience algorithm that has linear communication complexity in the failure-free case and a quadratic cost otherwise.

BibTeX - Entry

@InProceedings{cohen_et_al:LIPIcs.OPODIS.2022.18,
  author =	{Cohen, Shir and Keidar, Idit and Spiegelman, Alexander},
  title =	{{Make Every Word Count: Adaptive Byzantine Agreement with Fewer Words}},
  booktitle =	{26th International Conference on Principles of Distributed Systems (OPODIS 2022)},
  pages =	{18:1--18:21},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-265-5},
  ISSN =	{1868-8969},
  year =	{2023},
  volume =	{253},
  editor =	{Hillel, Eshcar and Palmieri, Roberto and Rivi\`{e}re, Etienne},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/opus/volltexte/2023/17638},
  URN =		{urn:nbn:de:0030-drops-176385},
  doi =		{10.4230/LIPIcs.OPODIS.2022.18},
  annote =	{Keywords: Byzantine Agreement, Byzantine Broadcast, Adaptive communication}
}

Keywords: Byzantine Agreement, Byzantine Broadcast, Adaptive communication
Collection: 26th International Conference on Principles of Distributed Systems (OPODIS 2022)
Issue Date: 2023
Date of publication: 15.02.2023

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