Multi-party computation as a service for privacy-preserving distributed applications

Bibliographic Details
Main Author: Carvalho, Miguel João Novo Faísca de
Publication Date: 2024
Format: Master thesis
Language: eng
Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Download full: http://hdl.handle.net/10400.5/98005
Summary: Tese de Mestrado, Engenharia Informática, 2025, Universidade de Lisboa, Faculdade de Ciências
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network_acronym_str RCAP
network_name_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
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spelling Multi-party computation as a service for privacy-preserving distributed applicationsComputação Segura entre ParesPartilha de SegredosTolerância a Faltas BizantinasTeses de mestrado - 2025Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Eletrotécnica, Eletrónica e InformáticaTese de Mestrado, Engenharia Informática, 2025, Universidade de Lisboa, Faculdade de CiênciasMulti-Party Computation (MPC) has recently gained interest as a tool to perform secure, distributed computations. However, current work presents limitations that hinder their practical application, namely not supporting a framework suited for long computations, assuming a fixed participant size, not tolerating faults, and running in strictly synchronous environments. We present MPCServe, a new practical Multi-Party Computation framework that dynamically performs computations while adopting a MPC-as-a-Service model for ease of usage. Our framework allows lightweight clients to outsource their privacy-preserving computations on encrypted data to a set of untrusted servers while guaranteeing computational output in the presence of t Byzantine faults assuming a total of at least n > 3t servers. MPCServe extends COBRA, a confidential Byzantine Fault Tolerance State Machine Replication framework that uses Dynamic Proactive Secret Sharing (DPSS) for storing data with high levels of privacy, integrity, and availability. Leveraging its faulttolerance guarantees and the homomorphic properties of DPSS, MPCServe builds a fluid-style, maliciously secure MPC infrastructure for asynchronous networks that allows servers to join and leave during the computational effort.Ferreira, Bernardo Luís da SilvaBessani, Alysson NevesRepositório da Universidade de LisboaCarvalho, Miguel João Novo Faísca de2025-02-01T15:34:44Z202520242025-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10400.5/98005enginfo: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:RCAAP2025-03-17T16:33:24Zoai:repositorio.ulisboa.pt:10400.5/98005Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-29T04:19:40.813929Repositórios 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 Multi-party computation as a service for privacy-preserving distributed applications
title Multi-party computation as a service for privacy-preserving distributed applications
spellingShingle Multi-party computation as a service for privacy-preserving distributed applications
Carvalho, Miguel João Novo Faísca de
Computação Segura entre Pares
Partilha de Segredos
Tolerância a Faltas Bizantinas
Teses de mestrado - 2025
Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Eletrotécnica, Eletrónica e Informática
title_short Multi-party computation as a service for privacy-preserving distributed applications
title_full Multi-party computation as a service for privacy-preserving distributed applications
title_fullStr Multi-party computation as a service for privacy-preserving distributed applications
title_full_unstemmed Multi-party computation as a service for privacy-preserving distributed applications
title_sort Multi-party computation as a service for privacy-preserving distributed applications
author Carvalho, Miguel João Novo Faísca de
author_facet Carvalho, Miguel João Novo Faísca de
author_role author
dc.contributor.none.fl_str_mv Ferreira, Bernardo Luís da Silva
Bessani, Alysson Neves
Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Carvalho, Miguel João Novo Faísca de
dc.subject.por.fl_str_mv Computação Segura entre Pares
Partilha de Segredos
Tolerância a Faltas Bizantinas
Teses de mestrado - 2025
Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Eletrotécnica, Eletrónica e Informática
topic Computação Segura entre Pares
Partilha de Segredos
Tolerância a Faltas Bizantinas
Teses de mestrado - 2025
Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Eletrotécnica, Eletrónica e Informática
description Tese de Mestrado, Engenharia Informática, 2025, Universidade de Lisboa, Faculdade de Ciências
publishDate 2024
dc.date.none.fl_str_mv 2024
2025-02-01T15:34:44Z
2025
2025-01-01T00:00:00Z
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/10400.5/98005
url http://hdl.handle.net/10400.5/98005
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
_version_ 1833602018628861952

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