MATTER: A Wide-Block Tweakable Block Cipher

Roberto Avanzi; Orr Dunkelman; Kazuhiko Minematsu

Paper 2024/1186

MATTER: A Wide-Block Tweakable Block Cipher

Roberto Avanzi

, University of Haifa

Orr Dunkelman

, University of Haifa

Kazuhiko Minematsu

, k-minematsu@nec.com

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.
Keywords: Tweakable Block Ciphers Lightweight Cryptography Wide-Block Ciphers Memory Encryption
Contact author(s): roberto avanzi @ gmail com
orrd @ cs haifa ac il
History: 2024-07-25: revised; 2024-07-23: received; See all versions
Short URL: https://ia.cr/2024/1186
License: CC BY-NC-ND

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}
}