Nibbling MAYO: Optimized Implementations for AVX2 and Cortex-M4

Abstract: MAYO is a popular high-calorie condiment as well as an auspicious candidate in the ongoing NIST competition for additional post-quantum signature schemes achieving competitive signature and public key sizes. In this work, we present high-speed implementations of MAYO using the AVX2 and Armv7E-M instruction sets targeting recent x86 platforms and the Arm Cortex-M4. Moreover, the main contribution of our work is showing that MAYO can be even faster when switching from a bitsliced representation of keys to a nibble-sliced representation. While the bitsliced representation was primarily motivated by faster arithmetic on microcontrollers, we show that it is not necessary for achieving high performance on Cortex-M4. On Cortex-M4, we instead propose to implement the large matrix multiplications of MAYO using the Method of the Four Russians (M4R), which allows us to achieve better performance than when using the bitsliced approach. This results in up to 21% faster signing. For AVX2, the ch.... https://tches.iacr.org/index.php/TCHES/article/view/11427

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch

Bibliographic citation
Nibbling MAYO: Optimized Implementations for AVX2 and Cortex-M4 ; volume:2024 ; number:2 ; year:2024
IACR transactions on cryptographic hardware and embedded systems ; 2024, Heft 2 (2024)

Creator
Beullens, Ward
Campos, Fabio
Celi, Sofía
Hess, Basil
Kannwischer, Matthias J.

DOI
10.46586/tches.v2024.i2.252-275
URN
urn:nbn:de:101:1-2024032018001073860517
Rights
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
14.08.2025, 10:44 AM CEST

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Associated

  • Beullens, Ward
  • Campos, Fabio
  • Celi, Sofía
  • Hess, Basil
  • Kannwischer, Matthias J.

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