This repository contains the reference code of SPHINCS-256, accompanying the EUROCRYPT 2015 paper "SPHINCS: practical stateless hash-based signatures", by Daniel J. Bernstein, Daira Hopwood, Andreas Hülsing, Tanja Lange, Ruben Niederhagen, Louiza Papachristodoulou, Michael Schneider, Peter Schwabe and Zooko Wilcox-O'Hearn. It was extracted from SUPERCOP-20171218.
The SPHINCS-256 code was placed in the public domain as per Section 1 of the SPHINCS paper.