From 25505898530a333011f4fd5cbc841ad6b26c089c Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 16:40:04 +0200 Subject: Adding upstream version 1:9.2p1. Signed-off-by: Daniel Baumann --- xmss_fast.h | 111 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 111 insertions(+) create mode 100644 xmss_fast.h (limited to 'xmss_fast.h') diff --git a/xmss_fast.h b/xmss_fast.h new file mode 100644 index 0000000..2ffba70 --- /dev/null +++ b/xmss_fast.h @@ -0,0 +1,111 @@ +#ifdef WITH_XMSS +/* $OpenBSD: xmss_fast.h,v 1.2 2018/02/26 03:56:44 dtucker Exp $ */ +/* +xmss_fast.h version 20160722 +Andreas Hülsing +Joost Rijneveld +Public domain. +*/ + +#include "xmss_wots.h" + +#ifndef XMSS_H +#define XMSS_H +typedef struct{ + unsigned int level; + unsigned long long subtree; + unsigned int subleaf; +} leafaddr; + +typedef struct{ + wots_params wots_par; + unsigned int n; + unsigned int h; + unsigned int k; +} xmss_params; + +typedef struct{ + xmss_params xmss_par; + unsigned int n; + unsigned int h; + unsigned int d; + unsigned int index_len; +} xmssmt_params; + +typedef struct{ + unsigned int h; + unsigned int next_idx; + unsigned int stackusage; + unsigned char completed; + unsigned char *node; +} treehash_inst; + +typedef struct { + unsigned char *stack; + unsigned int stackoffset; + unsigned char *stacklevels; + unsigned char *auth; + unsigned char *keep; + treehash_inst *treehash; + unsigned char *retain; + unsigned int next_leaf; +} bds_state; + +/** + * Initialize BDS state struct + * parameter names are the same as used in the description of the BDS traversal + */ +void xmss_set_bds_state(bds_state *state, unsigned char *stack, int stackoffset, unsigned char *stacklevels, unsigned char *auth, unsigned char *keep, treehash_inst *treehash, unsigned char *retain, int next_leaf); +/** + * Initializes parameter set. + * Needed, for any of the other methods. + */ +int xmss_set_params(xmss_params *params, int n, int h, int w, int k); +/** + * Initialize xmssmt_params struct + * parameter names are the same as in the draft + * + * Especially h is the total tree height, i.e. the XMSS trees have height h/d + */ +int xmssmt_set_params(xmssmt_params *params, int n, int h, int d, int w, int k); +/** + * Generates a XMSS key pair for a given parameter set. + * Format sk: [(32bit) idx || SK_SEED || SK_PRF || PUB_SEED || root] + * Format pk: [root || PUB_SEED] omitting algo oid. + */ +int xmss_keypair(unsigned char *pk, unsigned char *sk, bds_state *state, xmss_params *params); +/** + * Signs a message. + * Returns + * 1. an array containing the signature followed by the message AND + * 2. an updated secret key! + * + */ +int xmss_sign(unsigned char *sk, bds_state *state, unsigned char *sig_msg, unsigned long long *sig_msg_len, const unsigned char *msg,unsigned long long msglen, const xmss_params *params); +/** + * Verifies a given message signature pair under a given public key. + * + * Note: msg and msglen are pure outputs which carry the message in case verification succeeds. The (input) message is assumed to be within sig_msg which has the form (sig||msg). + */ +int xmss_sign_open(unsigned char *msg,unsigned long long *msglen, const unsigned char *sig_msg,unsigned long long sig_msg_len, const unsigned char *pk, const xmss_params *params); + +/* + * Generates a XMSSMT key pair for a given parameter set. + * Format sk: [(ceil(h/8) bit) idx || SK_SEED || SK_PRF || PUB_SEED || root] + * Format pk: [root || PUB_SEED] omitting algo oid. + */ +int xmssmt_keypair(unsigned char *pk, unsigned char *sk, bds_state *states, unsigned char *wots_sigs, xmssmt_params *params); +/** + * Signs a message. + * Returns + * 1. an array containing the signature followed by the message AND + * 2. an updated secret key! + * + */ +int xmssmt_sign(unsigned char *sk, bds_state *state, unsigned char *wots_sigs, unsigned char *sig_msg, unsigned long long *sig_msg_len, const unsigned char *msg, unsigned long long msglen, const xmssmt_params *params); +/** + * Verifies a given message signature pair under a given public key. + */ +int xmssmt_sign_open(unsigned char *msg, unsigned long long *msglen, const unsigned char *sig_msg, unsigned long long sig_msg_len, const unsigned char *pk, const xmssmt_params *params); +#endif +#endif /* WITH_XMSS */ -- cgit v1.2.3