Paper 2024/1186 Original: eprint.iacr.org/2024/1186 ↗
MATTER: A Wide-Block Tweakable Block Cipher
Abstract
In this note, we introduce the MATTER Tweakable Block Cipher, designed principally for low latency in low-area hardware implementations, but that can also be implemented in an efficient and compact way in software. MATTER is a 512-bit wide balanced Feistel network with three to six rounds, using the ASCON permutation as the round function. The Feistel network defines a keyed, non-tweakable core, which is made tweakable by using the encryption of the tweak as its key. Key and tweak are 320-bit inputs. MATTER is particularly suitable for use in an OCB-like mode of operation, with an encrypted checksum for authentication.
Metadata
- Available format(s)
PDF- Category
- Secret-key cryptography
- Publication info
- Preprint.
- History
- 2024-07-25: last updated
- 2024-07-23: published
- Short URL
- https://ia.cr/2024/1186
- License
- https://creativecommons.org/licenses/by-nc-nd/4.0/
BibTeX
@misc{cryptoeprint:2024/1186,
author = {Roberto Avanzi and Orr Dunkelman and Kazuhiko Minematsu},
title = {MATTER: A Wide-Block Tweakable Block Cipher},
howpublished = {Cryptology {ePrint} Archive, Paper 2024/1186},
year = {2024},
url = {https://eprint.iacr.org/2024/1186}
}