Paper 2023/1767 Original: eprint.iacr.org/2023/1767 ↗
The Impact of Hash Primitives and Communication Overhead for Hardware-Accelerated SPHINCS+
Abstract
SPHINCS+ is a signature scheme included in the first NIST post-quantum standard, that bases its security on the underlying hash primitive. As most of the runtime of SPHINCS+ is caused by the evaluation of several hash- and pseudo-random functions, instantiated via the hash primitive, offloading this computation to dedicated hardware accelerators is a natural step. In this work, we evaluate different architectures for hardware acceleration of such a hash primitive with respect to its use-case and evaluate them in the context of SPHINCS+. We attach hardware accelerators for different hash primitives (SHAKE256 and Asconxof for both full and round-reduced versions) to CPU interfaces having different transfer speeds. We show, that for most use-cases, data transfer determines the overall performance if accelerators are equipped with FIFOs.
Metadata
- Available format(s)
PDF- Category
- Implementation
- Publication info
- Preprint.
- History
- 2024-04-04: last updated
- 2023-11-15: published
- Short URL
- https://ia.cr/2023/1767
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2023/1767,
author = {Patrick Karl and Jonas Schupp and Georg Sigl},
title = {The Impact of Hash Primitives and Communication Overhead for Hardware-Accelerated SPHINCS+},
howpublished = {Cryptology {ePrint} Archive, Paper 2023/1767},
year = {2023},
url = {https://eprint.iacr.org/2023/1767}
}