SPHINCS-256 NIF for Erlang

Version: 1.0.0 (SUPERCOP: 20160910)

Authors: Alexander Færøy (ahf@0x90.dk).

SPHINCS-256 is a high-security post-quantum stateless hash-based signature
scheme. This repository contains the SPHINCS-256 implementation found in the
SUPERCOP performance suite together with an Erlang NIF's for the SPHINCS API.

SPHINCS-256 uses 41 KB signatures, 1 KB public keys, and 1 KB private keys.

For more information about SPHINCS see:

• http://sphincs.cr.yp.to/
• http://bench.cr.yp.to/supercop.html

Example Usage

1. Alice generates a new keypair and sends her public key to Bob.

{ok, #{ secret := Secret, public := Public }} = sphincs:keypair().

2. Alice signs a document and sends it to Bob.

SignedDocument = sphincs:sign(Document, Secret).

3. Bob verifies the signed document from Alice.

sphincs:verify(SignedDocument, Public).

Issues

• It's currently only the ref implementation of BLAKE-256,
  BLAKE-512, ChaCha12 and SPHINCS-256 that have been tested. It would be nice
  to have vectorized versions for higher performance.

• The Erlang bindings of sphincs could use some tests :-)

Modules