From 999ae6be3243c7b4a815247199447b53c39a3d65 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:26:58 +0200 Subject: Adding upstream version 1:7.9p1. Signed-off-by: Daniel Baumann --- xmss_wots.h | 64 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 xmss_wots.h (limited to 'xmss_wots.h') diff --git a/xmss_wots.h b/xmss_wots.h new file mode 100644 index 0000000..1eebf3b --- /dev/null +++ b/xmss_wots.h @@ -0,0 +1,64 @@ +#ifdef WITH_XMSS +/* $OpenBSD: xmss_wots.h,v 1.3 2018/02/26 12:14:53 dtucker Exp $ */ +/* +wots.h version 20160722 +Andreas Hülsing +Joost Rijneveld +Public domain. +*/ + +#ifndef WOTS_H +#define WOTS_H + +#ifdef HAVE_STDINT_H +#include "stdint.h" +#endif + +/** + * WOTS parameter set + * + * Meaning as defined in draft-irtf-cfrg-xmss-hash-based-signatures-02 + */ +typedef struct { + uint32_t len_1; + uint32_t len_2; + uint32_t len; + uint32_t n; + uint32_t w; + uint32_t log_w; + uint32_t keysize; +} wots_params; + +/** + * Set the WOTS parameters, + * only m, n, w are required as inputs, + * len, len_1, and len_2 are computed from those. + * + * Assumes w is a power of 2 + */ +void wots_set_params(wots_params *params, int n, int w); + +/** + * WOTS key generation. Takes a 32byte seed for the secret key, expands it to a full WOTS secret key and computes the corresponding public key. + * For this it takes the seed pub_seed which is used to generate bitmasks and hash keys and the address of this WOTS key pair addr + * + * params, must have been initialized before using wots_set params for params ! This is not done in this function + * + * Places the computed public key at address pk. + */ +void wots_pkgen(unsigned char *pk, const unsigned char *sk, const wots_params *params, const unsigned char *pub_seed, uint32_t addr[8]); + +/** + * Takes a m-byte message and the 32-byte seed for the secret key to compute a signature that is placed at "sig". + * + */ +int wots_sign(unsigned char *sig, const unsigned char *msg, const unsigned char *sk, const wots_params *params, const unsigned char *pub_seed, uint32_t addr[8]); + +/** + * Takes a WOTS signature, a m-byte message and computes a WOTS public key that it places at pk. + * + */ +int wots_pkFromSig(unsigned char *pk, const unsigned char *sig, const unsigned char *msg, const wots_params *params, const unsigned char *pub_seed, uint32_t addr[8]); + +#endif +#endif /* WITH_XMSS */ -- cgit v1.2.3