Paper 2024/1235
Blue fish, red fish, live fish, dead fish
Abstract
We show that the DAG-based consensus protocol Tusk [DKSS22] does not achieve liveness, at least under certain reasonable assumptions on the implementation that are consistent with its specification. In addition, we give a simple 2-round variation of Tusk with lower latency and strong liveness properties, but with suboptimal resilience. We also show that another 2-round protocol, GradedDAG [DZX+24], which has optimal resilience, also has liveness problems analogous to Tusk.
Metadata
- Available format(s)
-
PDF
- Category
- Cryptographic protocols
- Publication info
- Preprint.
- Keywords
- asynchronyconsensus
- Contact author(s)
- victor @ shoup net
- History
- 2024-08-06: revised
- 2024-08-03: received
- See all versions
- Short URL
- https://ia.cr/2024/1235
- License
-
CC BY-NC-ND
BibTeX
@misc{cryptoeprint:2024/1235,
author = {Victor Shoup},
title = {Blue fish, red fish, live fish, dead fish},
howpublished = {Cryptology {ePrint} Archive, Paper 2024/1235},
year = {2024},
url = {https://eprint.iacr.org/2024/1235}
}
