DAMYSUS: Streamlined BFT Consensus Leveraging Trusted Components

Jérémie Decouchant, David Kozhaya, Vincent Rahli, Jiangshan Yu

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

1 Citation (Scopus)
34 Downloads (Pure)

Abstract

Recently, streamlined Byzantine Fault Tolerant (BFT) consensus protocols, such as HotStuff, have been proposed as a means to circumvent the inefficient view-changes of traditional BFT protocols, such as PBFT. Several works have detailed trusted components, and BFT protocols that leverage them to tolerate a minority of faulty nodes and use a reduced number of communication rounds. Inspired by these works we identify two basic trusted services, respectively called the Checker and Accumulator services, which can be leveraged by streamlined protocols. Based on these services, we design Damysus, a streamlined protocol that improves upon HotStuff's resilience and uses less communication rounds. In addition, we show how the Checker and Accumulator services can be adapted to develop Chained-Damysus, a chained version of Damysus where operations are pipelined for efficiency. We prove the correctness of Damysus and Chained-Damysus, and evaluate their performance showcasing their superiority compared to previous protocols.

Original languageEnglish
Title of host publicationEuroSys 2022 - Proceedings of the 17th European Conference on Computer Systems
PublisherAssociation for Computing Machinery (ACM)
Pages1-16
Number of pages16
ISBN (Electronic)9781450391627
DOIs
Publication statusPublished - 2022
Event17th European Conference on Computer Systems, EuroSys 2022 - Rennes, France
Duration: 5 Apr 2022 → …

Publication series

NameEuroSys 2022 - Proceedings of the 17th European Conference on Computer Systems

Conference

Conference17th European Conference on Computer Systems, EuroSys 2022
Country/TerritoryFrance
CityRennes
Period5/04/22 → …

Keywords

  • Consensus
  • Fault tolerance
  • Trusted component

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