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cs.DC2019
Revisiting EZBFT: A Decentralized Byzantine Fault Tolerant Protocol with Speculation
Nibesh Shrestha, Mohan Kumar
In this note, we revisit EZBFT[2] and present safety, liveness and execution consistency violations in the protocol. To demonstrate these violations, we present simple scenarios, i…
cs.DC2019★ 2 cited
Revisiting hBFT: Speculative Byzantine Fault Tolerance with Minimum Cost
Nibesh Shrestha, Mohan Kumar, SiSi Duan
FaB Paxos[5] sets a lower bound of 5f + 1 replicas for any two-step consensus protocols tolerating f byzantine failures. Yet, hBFT[3] promises a two-step consensus protocol with on…