Transcription of Practical Byzantine Fault Tolerance
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AppearsintheProceedingsoftheThird SymposiumonOperatingSystemsDesignandImpl ementation,New Orleans,USA,February1999 PracticalByzantineFaultToleranceMiguelCa stroandBarbaraLiskovLaboratoryforCompute rScience,MassachusettsInstituteofTechnol ogy,545 TechnologySquare, Cambridge, ,thealgorithmdescribedinthispaperis Practical :it worksinasynchronousenvironmentslike theInternetandincorporatesseveralimporta ntoptimizationsthatimprove thatourserviceis only3%slowerthana ,thenumberofsoftwareerrorsis ( ,arbitrary)behavior, new,practicalalgorithmforstatemachinerep lication[17, 34] totalofreplicasaresimultaneouslyfaulty.
clients cannot break those invariants. The safety property is insufficient to guard against faulty clients, e.g., in a filesystem a faulty client can write garbage data to some shared file. However, we limit the amount of damage a faulty client can do …
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