Paper 2022/265 Original: eprint.iacr.org/2022/265 ↗
Non-interactive Mimblewimble transactions, revisited
Abstract
Mimblewimble is a cryptocurrency protocol that promises to overcome notorious blockchain scalability issues and provides user privacy. For a long time its wider adoption has been hindered by the lack of non-interactive transactions, that is, payments for which only the sender needs to be online. Yu proposed a way of adding non-interactive transactions to stealth addresses to Mimblewimble, but we show that it is flawed. Building on Yu and integrating ideas from Burkett, we give a fixed scheme and provide a rigorous security analysis in a strenghtening of the previous security model from Eurocrypt'19. Our protocol is considered for implementation by MimbleWimbleCoin and a variant is now deployed as MimbleWimble Extension Blocks (MWEB) in Litecoin.
Metadata
- Available format(s)
PDF- Category
- Cryptographic protocols
- Publication info
- Preprint.
- History
- 2022-11-26: last updated
- 2022-03-02: published
- Short URL
- https://ia.cr/2022/265
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2022/265,
author = {Georg Fuchsbauer and Michele Orrù},
title = {Non-interactive Mimblewimble transactions, revisited},
howpublished = {Cryptology {ePrint} Archive, Paper 2022/265},
year = {2022},
url = {https://eprint.iacr.org/2022/265}
}