Paper 2023/1262
Phoenixx: Linear consensus with random sampling
Abstract
We present Phoenixx, a round and leader based Byzantine fault tolerant consensus protocol, that operates in the partial synchrony network communications model. Phoenixx combines the three phase approach from HotStuff, with a novel Endorser Sampling, that selects a subset of nodes, called endorsers, to "compress'' the opinion of the network. Unlike traditional sampling approaches that select a subset of the network to run consensus on behalf of the network and disseminate the outcome, Phoenixx still requires participation of the whole network. The endorsers, however, assume a special role as they confirm that at least $2f+1$ validators are in agreement and issue a compressed certificate, attesting the network reached a decision. Phoenixx achieves linear communication complexity, while maintaining safety, liveness, and optimistic responsiveness, without using threshold signatures.
Note: (Updated abstract on the website as it had some bad LaTeX formatting)
Metadata
- Available format(s)
-
PDF
- Category
- Cryptographic protocols
- Publication info
- Preprint.
- Keywords
- BFT consensusblockchainquantum securityscalability
- Contact author(s)
-
david @ chaum com
bernardo @ bitfashioned com
will @ xx network
mario @ bitfashioned com
baltasar @ bitfashioned com - History
- 2023-08-24: revised
- 2023-08-21: received
- See all versions
- Short URL
- https://ia.cr/2023/1262
- License
-
CC BY-NC
BibTeX
@misc{cryptoeprint:2023/1262,
author = {David Chaum and Bernardo Cardoso and William Carter and Mario Yaksetig and Baltasar Aroso},
title = {Phoenixx: Linear consensus with random sampling},
howpublished = {Cryptology {ePrint} Archive, Paper 2023/1262},
year = {2023},
url = {https://eprint.iacr.org/2023/1262}
}
