Reference : Guru: Universal Reputation Module for Distributed Consensus Protocols
Reports : Internal report
Engineering, computing & technology : Computer science
Security, Reliability and Trust
http://hdl.handle.net/10993/31586
Guru: Universal Reputation Module for Distributed Consensus Protocols
English
Biryukov, Alex mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Computer Science and Communications Research Unit (CSC) > ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)]
Feher, Daniel [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
Khovratovich, Dmitry [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > Computer Science and Communications Research Unit (CSC) >]
30-Jun-2017
University of Luxembourg
16
Luxembourg
Luxembourg
[en] consensus ; distributed ; cryptocurrency ; blockchain
[en] In this paper we describe how to couple reputation systems with distributed consensus protocols to provide high-throughput highly-scalable consensus for large peer-to-peer networks of untrusted validators.

We introduce reputation module Guru, which can be laid on top of various consensus protocols such as PBFT or HoneyBadger. It ranks nodes based on the outcomes of consensus rounds run by a small committee, and adaptively selects the committee based on the current reputation. The protocol can also take external reputation ranking as input. Guru can tolerate larger threshold of malicious nodes (up to slightly above 1/2) compared to the 1/3 limit of BFT consensus algorithms.
Researchers ; Professionals ; Students ; General public
http://hdl.handle.net/10993/31586

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