3 citations · 6 across the 11 of their papers we have counts for
7 papers · 1 filter
Revisiting Fast Tendermint: An Agreement Violation and Two Repairs
Alejandro Ranchal-Pedrosa
Fast Tendermint reduces Tendermint's good-case latency to two communication steps for n>=5f+1. We show that its published round-change rule violates Agreement: one Byzantine proces…
Hermes: Low Tail-Latency Via Prefix Consensus
Alejandro Ranchal-Pedrosa, Dakai Kang, Neil Giridharan +3
Leader-based BFT protocols finalize through their leaders: a view whose leader is crashed or slow finalizes nothing, and the timeout that ends it admits no good setting. A conserva…
ZLB, a Blockchain Tolerating Colluding Majorities
Alejandro Ranchal-Pedrosa, Vincent Gramoli
The problem of Byzantine consensus has been key to designing secure distributed systems. However, it is particularly difficult, mainly due to the presence of Byzantine processes th…
Basilic: Resilient Optimal Consensus Protocols With Benign and Deceitful Faults
Alejandro Ranchal-Pedrosa, Vincent Gramoli
The problem of Byzantine consensus has been key to designing secure distributed systems. However, it is particularly difficult, mainly due to the presence of Byzantine processes th…
TRAP: The Bait of Rational Players to Solve Byzantine Consensus
Alejandro Ranchal-Pedrosa, Vincent Gramoli
It is impossible to solve the Byzantine consensus problem in an open network of participants if only or less of them are correct. As blockchains need to solve consensus,…
ZLB: A Blockchain to Tolerate Colluding Majorities
Alejandro Ranchal-Pedrosa, Vincent Gramoli
In the general setting, consensus cannot be solved if an adversary controls a third of the system. Yet, blockchain participants typically reach consensus "eventually" despite an ad…
Platypus: a Partially Synchronous Offchain Protocol for Blockchains
Alejandro Ranchal-Pedrosa, Vincent Gramoli
Offchain protocols aim at bypassing the scalability and privacy limitations of classic blockchains by allowing a subset of participants to execute multiple transactions outside the…