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Acordo bizantino mútavel para a Blockchain

Authors: Silva, Fábio Luís Baião da;

Acordo bizantino mútavel para a Blockchain

Abstract

O principal componente de um sistema blockchain e o protocolo de acordo distribuído que tem de ser capaz de tolerar faltas bizantinas na chegada a decisões. Existem muitas implementações de blockchain, cada uma utilizando diferentes protocolos de acordo, porém todos eles revelam limitações. Implementações cujo protocolo é da categoria Proof of, apesar de escalarem, implicam compromissos entre desempenho e coerência. Protocolos ditos tradicionais (e.g. PBFT) são muito restritos na escalabilidade que oferecem, não conseguindo manter o desempenho ao aumentar o numero de participantes. Para além disso, cada protocolo foca-se em características particulares com padrões de comunicação específicos, pelo que para alterar algum destes aspetos e necessário substituir o protocolo de acordo. Neste trabalho propõe-se um protocolo que combina a tolerância a faltas bizantinas com as características do protocolo Mutable Consensus que admite diferentes padrões de comunicação aplicáveis a diferentes ambientes. Adicionalmente, um desses padrões que privilegia uma comunicação por difusão epidémica (gossip) oferece grande escalabilidade, permitindo assim construir um protocolo que também possa escalar.

Country
Portugal
Related Organizations
Keywords

Distributed consensus, Blockchain, Faltas bizantinas, Byzantine faults, Acordo distribuído, Engenharia e Tecnologia::Engenharia Eletrotécnica, Eletrónica e Informática

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green