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On the Resilience of Intrusion-Tolerant Distributed Systems

dc.contributor.authorNeves, Nuno Ferreirapor
dc.contributor.authorVeríssimo, Paulopor
dc.contributor.authorSousa, Paulopor
dc.contributor.authorLopes, Antóniapor
dc.date.accessioned2009-02-10T13:11:51Zpor
dc.date.accessioned2014-11-14T16:23:42Z
dc.date.available2009-02-10T13:11:51Zpor
dc.date.available2014-11-14T16:23:42Z
dc.date.issued2006-09por
dc.description.abstractThe paper starts by introducing a new dimension along which distributed systems resilience may be evaluated - exhaustion-safety. A node-exhaustion-safe intrusion-tolerant distributed system is a system that assuredly does not suffer more than the assumed number of node failures (e.g., crash, Byzantine). We show that it is not possible to build this kind of systems under the asynchronous model. This result follows from the fact that in an asynchronous environment one cannot guarantee that the system terminates its execution before the occurrence of more than the assumed number of faults. After introducing exhaustion-safety, the paper proposes a new paradigm - proactive resilience - to build intrusion-tolerant distributed systems. Proactive resilience is based on architectural hybridization and hybrid distributed system modeling. The Proactive Resilience Model (PRM) is presented and shown to be a way of building node-exhaustion-safe intrusion-tolerant systems. Finally, the paper describes the design of a secret sharing system built according to the PRM. A proof-of-concept prototype of this system is shown to be highly resilient under different attack scenarios.por
dc.identifier.urihttp://hdl.handle.net/10451/14075por
dc.identifier.urihttp://repositorio.ul.pt/handle/10455/2975por
dc.language.isoporpor
dc.publisherDepartment of Informatics, University of Lisbonpor
dc.relation.ispartofseriesdi-fcul-tr-06-14por
dc.subjectIntrusion Tolerancepor
dc.subjectTiming Assumptionspor
dc.subjectProactive Recoverypor
dc.subjectWormholespor
dc.subjectSecret Sharingpor
dc.titleOn the Resilience of Intrusion-Tolerant Distributed Systemspor
dc.typereport
dspace.entity.typePublication
rcaap.rightsopenAccesspor
rcaap.typereportpor

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