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/* ext_lms.h
*
* Copyright (C) 2006-2026 wolfSSL Inc.
*
* This file is part of wolfSSL.
*
* wolfSSL is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* wolfSSL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
*/
#ifndef EXT_LMS_H
#define EXT_LMS_H
#if defined(WOLFSSL_HAVE_LMS) && defined(HAVE_LIBLMS)
#include <wolfssl/wolfcrypt/lms.h>
/* hash-sigs LMS HSS includes */
#include <hss.h>
#if defined(WOLFSSL_WC_LMS)
#error "This code is incompatible with wolfCrypt's implementation of LMS."
#endif
/*
* The hash-sigs LMS lib supports from MIN_HSS_LEVELS to MAX_HSS_LEVELS
* number of levels of Merkle trees. It allows for the tree height and
* winternitz parameter to be unique per level.
*/
/* hss structs */
typedef struct hss_working_key hss_working_key;
typedef struct hss_extra_info hss_extra_info;
struct LmsKey {
unsigned levels; /* Number of tree levels. */
param_set_t lm_type[MAX_HSS_LEVELS]; /* Height param per level. */
param_set_t lm_ots_type[MAX_HSS_LEVELS]; /* Winternitz param per level. */
unsigned char pub[HSS_MAX_PUBLIC_KEY_LEN];
#ifndef WOLFSSL_LMS_VERIFY_ONLY
hss_working_key * working_key;
wc_lms_write_private_key_cb write_private_key; /* Callback to write/update key. */
wc_lms_read_private_key_cb read_private_key; /* Callback to read key. */
void * context; /* Context arg passed to callbacks. */
hss_extra_info info;
#endif /* ifndef WOLFSSL_LMS_VERIFY_ONLY */
enum wc_LmsState state;
};
#endif /* WOLFSSL_HAVE_LMS */
#endif /* EXT_LMS_H */