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.

  The Computer Science Department and Information Systems Group (ISG) at UC Irvine welcomes Boon Thau Loo University of Pennsylvania Towards Full-Stack Adaptivity in Permissioned Blockchain Systems October 20, 2023 at 11:00AM DBH 6011   ABSTRACT Permissioned blockchain systems are an emerging instance of untrustworthy distributed databases. As novel smart contracts, modern hardware, and new […]

The Computer Science Department and Information Systems Group (ISG) at UC Irvine welcomes Ken Birman Cornell University Cascade:  A Platform for Fast Edge Intelligence October 27, 2023 at 11:00AM DBH 6011   ABSTRACT There is a growing need to apply machine intelligence and learning at the edge of the cloud.  Doing so would reduce delays […]

ProBE: Proportioning Privacy Budget for Complex Exploratory Decision Support Nada Lahjouji PhD Student, UC, Irvine Abstract Decision support (DS) applications play a crucial role in analyzing large volumes of data to produce valuable insights that facilitate informed decision-making. Such data can, however, contain sensitive information about individuals that requires privacy-preserving mechanisms to prevent data leaks, […]