MiniSHAKE

Guido Bertoni; Joan Daemen; Seth Hoffert; Silvia Mella; Michaël Peeters; Gilles Van Assche; Ronny Van Keer

Paper 2026/2363 Original: eprint.iacr.org/2026/2363 ↗

MiniSHAKE

Guido Bertoni

Joan Daemen

Seth Hoffert

Silvia Mella

Michaël Peeters

Gilles Van Assche

Ronny Van Keer

Abstract

The overwhelming majority of the Keccak instances standardized and used in practice today make use of the Keccak-$f$ [1600] permutation or reduced-round versions of it. There are a few use cases where using a smaller permutation width would be beneficial, notably when one has to hash many very short messages. To address this, the present note defines instances that use the Keccak-$p$[800, $n_r = 12$] permutation, collectively under the name MiniSHAKE.

Metadata

Available format(s): PDF
Category: Secret-key cryptography
Publication info: Preprint.
History: 2026-10-05: last updated; 2026-10-05: published
Short URL: https://ia.cr/2026/2363
License: https://creativecommons.org/licenses/by/4.0/

BibTeX

@misc{cryptoeprint:2026/2363,
      author = {Guido Bertoni and Joan Daemen and Seth Hoffert and Silvia Mella and Michaël Peeters and Gilles Van Assche and Ronny Van Keer},
      title = {MiniSHAKE},
      howpublished = {Cryptology {ePrint} Archive, Paper 2026/2363},
      year = {2026},
      url = {https://eprint.iacr.org/2026/2363}
}