Paper 2015/1042 Original: eprint.iacr.org/2015/1042 ↗
ARMed SPHINCS -- Computing a 41KB signature in 16KB of RAM
Abstract
This paper shows that it is feasible to implement the stateless hash-based signature scheme SPHINCS-256 on an embedded microprocessor with memory even smaller than a signature and limited computing power. We demonstrate that it is possible to generate and verify the 41\,KB signature on an ARM Cortex M3 that only has 16\,KB of memory available. We provide benchmarks for our implementation which show that this can be used in practice. To analyze the costs of using the stateless SPHINCS scheme instead of its stateful alternatives, we also implement XMSS$^{MT}$ on this platform and give a comparison.
Metadata
- Available format(s)
PDF- Category
- Implementation
- Publication info
- Preprint.
- History
- 2016-02-03: last updated
- 2015-10-28: published
- Short URL
- https://ia.cr/2015/1042
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2015/1042,
author = {Andreas Hülsing and Joost Rijneveld and Peter Schwabe},
title = {ARMed SPHINCS -- Computing a 41KB signature in 16KB of RAM},
howpublished = {Cryptology {ePrint} Archive, Paper 2015/1042},
year = {2015},
url = {https://eprint.iacr.org/2015/1042}
}