Arma: Byzantine Fault Tolerant Consensus with Horizontal Scalability

Yacov Manevich; Hagar Meir; Kaoutar Elkhiyaoui; Yoav Tock; May Buzaglo

Paper 2024/808

Arma: Byzantine Fault Tolerant Consensus with Horizontal Scalability

Yacov Manevich

, IBM Research - Zurich

Hagar Meir, IBM Research - Haifa

Kaoutar Elkhiyaoui

, IBM Research - Zurich

Yoav Tock, IBM Research - Haifa

May Buzaglo, IBM Research - Haifa

Abstract

Arma is a Byzantine Fault Tolerant (BFT) consensus system designed to achieve horizontal scalability across all hardware resources: network bandwidth, CPU, and disk I/O. As opposed to preceding BFT protocols, Arma separates the dissemination and validation of client transactions from the consensus process, restricting the latter to totally ordering only metadata of batches of transactions. This separation enables each party to distribute compute and storage resources for transaction validation, dissemination and disk I/O among multiple machines, resulting in horizontal scalability. Additionally, Arma ensures censorship resistance by imposing a maximum time limit on the inclusion of client transactions. We built and evaluated two Arma prototypes. The first is an independent system handling over 200,000 transactions per second, the second integrated into Hyperledger Fabric, speeding its consensus by an order of magnitude.

Metadata

Available format(s): PDF
Category: Applications
Publication info: Preprint.
Keywords: Consensus Distributed Systems
Contact author(s): yacov manevich @ ibm com
History: 2024-05-27: approved; 2024-05-24: received; See all versions
Short URL: https://ia.cr/2024/808
License: CC BY

BibTeX

@misc{cryptoeprint:2024/808,
      author = {Yacov Manevich and Hagar Meir and Kaoutar Elkhiyaoui and Yoav Tock and May Buzaglo},
      title = {Arma: Byzantine Fault Tolerant Consensus with Horizontal Scalability},
      howpublished = {Cryptology {ePrint} Archive, Paper 2024/808},
      year = {2024},
      url = {https://eprint.iacr.org/2024/808}
}