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Suyash Gupta(UC Berkeley): Dissecting BFT Consensus: In Trusted Components we Trust!
October 13, 2023 @ 1:00 pm - 5:00 pm
The Information Systems Group (ISG) at UC Irvine welcomes
Suyash Gupta
UC Berkeley
Dissecting BFT Consensus: In Trusted Components we Trust!
ABSTRACT
The growing interest in reliable multi-party applications has fostered widespread adoption of Byzantine Fault-Tolerant (bft) consensus protocols. Existing bft protocols need f more replicas than Paxos-style protocols to prevent equivocation attacks. trust-bft protocols seek to minimize this cost by making use of trusted components at replicas. This paper makes two contributions. First, we analyze the design of existing trust-bft protocols and uncover three fundamental limitations that preclude most practical deployments. Some of these limitations are fundamental, while others are linked to the state of trusted components today. Second, we introduce a novel suite of consensus protocols, FlexiTrust, that attempts to sidestep these issues. We show that our FlexiTrust protocols achieve up to 185% more throughput than their trust-bft counterparts.
BIO
Suyash Gupta is a postdoctoral researcher at the SkyLab, University of California, Berkeley. He is also the Lead Architect of ResilientDB fabric. Prior to joining Berkeley, he received his Ph.D. degree from University of California, Davis. He also holds two Master of Science degrees; one from Purdue University and another from Indian Institute of Technology Madras. His current research focuses on attaining safe and efficient, fault tolerant distributed consensus and communication. He has also co-authored a book on fault-tolerant distributed transaction processing at Morgan & Claypool. He has been awarded the Best Graduate Researcher Award for 2021 by UC Davis and Best Paper Award at EuroSys’23. In his free time, Suyash likes to code and his team won Best Hacker Award at BostonHacks, HackIllinois, and HackPrinceton, among others.