Threat-adaptive Byzantine Consensus

Bibliographic Details
Main Author: Rodrigues, Lívio Grifo Jorge
Publication Date: 2023
Format: Master thesis
Language: eng
Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Download full: http://hdl.handle.net/10451/62647
Summary: Tese de mestrado, Engenharia Informática, 2023, Universidade de Lisboa, Faculdade de Ciências
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spelling Threat-adaptive Byzantine ConsensusReplicação de Máquinas de EstadoTolerância a Faltas BizantinasAuditoria em Sistemas Tolerantes a Faltas BizantinasConsensoTeses de mestrado - 2023Departamento de InformáticaTese de mestrado, Engenharia Informática, 2023, Universidade de Lisboa, Faculdade de CiênciasBlockchain technology has sparked renewed interest in planetary-scale Byzantine fault-tolerant (BFT) state machine replication (SMR). While recent works have mainly focused on improving the scalability and throughput of these protocols, few have addressed latency. We present FLASHCONSENSUS, a novel transformation for optimizing the latency of quorum-based BFT consensus protocols. FLASHCONSENSUS uses an adaptive resilience threshold that enables faster transaction ordering when the system contains few faulty replicas. Our construction exploits adaptive weighted replication to automatically assign high voting power to the fastest replicas, forming small quorums that significantly speed up consensus. Even when using small quorums with a low resilience threshold, our protocol still satisfies the standard SMR safety and liveness guarantees, thanks to the careful integration of abortable SMR and BFT forensics techniques. To evaluate the efficacy of our approach, we conducted experiments with 21 replicas deployed on an emulated network resembling the AWS (Amazon Web Services) regions. The results show that FLASHCONSENSUS can order transactions with finality in under 0.4s, which is half the time a PBFT-like protocol takes in the same network and even less than this protocol running on the theoretically best possible internet links (transmitting at 67% of the speed of light). FLASHCONSENSUS represents a significant step forward in the quest for faster, more efficient BFT-based consensus protocols. Our approach has the potential to substantially improve the performance of BFT consensus protocols, which are critical to a wide range of distributed systems applications. By reducing latency, we can make BFT-based systems more responsive, improving the user experience and the overall effectiveness of these systems.Bessani, Alysson Neves, 1978-Cogo, Vinicius VielmoRepositório da Universidade de LisboaRodrigues, Lívio Grifo Jorge2024-02-15T15:54:10Z202320232023-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10451/62647TID:203524195enginfo:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2025-03-17T15:11:13Zoai:repositorio.ulisboa.pt:10451/62647Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-29T03:36:19.680455Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv Threat-adaptive Byzantine Consensus
title Threat-adaptive Byzantine Consensus
spellingShingle Threat-adaptive Byzantine Consensus
Rodrigues, Lívio Grifo Jorge
Replicação de Máquinas de Estado
Tolerância a Faltas Bizantinas
Auditoria em Sistemas Tolerantes a Faltas Bizantinas
Consenso
Teses de mestrado - 2023
Departamento de Informática
title_short Threat-adaptive Byzantine Consensus
title_full Threat-adaptive Byzantine Consensus
title_fullStr Threat-adaptive Byzantine Consensus
title_full_unstemmed Threat-adaptive Byzantine Consensus
title_sort Threat-adaptive Byzantine Consensus
author Rodrigues, Lívio Grifo Jorge
author_facet Rodrigues, Lívio Grifo Jorge
author_role author
dc.contributor.none.fl_str_mv Bessani, Alysson Neves, 1978-
Cogo, Vinicius Vielmo
Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Rodrigues, Lívio Grifo Jorge
dc.subject.por.fl_str_mv Replicação de Máquinas de Estado
Tolerância a Faltas Bizantinas
Auditoria em Sistemas Tolerantes a Faltas Bizantinas
Consenso
Teses de mestrado - 2023
Departamento de Informática
topic Replicação de Máquinas de Estado
Tolerância a Faltas Bizantinas
Auditoria em Sistemas Tolerantes a Faltas Bizantinas
Consenso
Teses de mestrado - 2023
Departamento de Informática
description Tese de mestrado, Engenharia Informática, 2023, Universidade de Lisboa, Faculdade de Ciências
publishDate 2023
dc.date.none.fl_str_mv 2023
2023
2023-01-01T00:00:00Z
2024-02-15T15:54:10Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10451/62647
TID:203524195
url http://hdl.handle.net/10451/62647
identifier_str_mv TID:203524195
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
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