/*
* hashsig.h
* ---------
* Implementation of draft-mcgrew-hash-sigs-08.txt
*
* Copyright (c) 2018, NORDUnet A/S All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of the NORDUnet nor the names of its contributors may
* be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _HAL_HASHSIG_H_
#define _HAL_HASHSIG_H_
typedef struct hal_hashsig_key hal_hashsig_key_t;
extern const size_t hal_hashsig_key_t_size;
extern hal_error_t hal_hashsig_key_gen(hal_core_t *core,
hal_hashsig_key_t **key_,
const size_t hss_levels,
const hal_lms_algorithm_t lms_type,
const hal_lmots_algorithm_t lmots_type);
extern hal_error_t hal_hashsig_key_delete(const hal_hashsig_key_t * const key);
extern hal_error_t hal_hashsig_private_key_to_der(const hal_hashsig_key_t * const key,
uint8_t *der, size_t *der_len, const size_t der_max);
extern size_t hal_hashsig_private_key_to_der_len(const hal_hashsig_key_t * const key);
extern hal_error_t hal_hashsig_private_key_from_der(hal_hashsig_key_t **key_,
void *keybuf, const size_t keybuf_len,
const uint8_t *der, const size_t der_len);
extern hal_error_t hal_hashsig_public_key_to_der(const hal_hashsig_key_t * const key,
uint8_t *der, size_t *der_len, const size_t der_max);
extern size_t hal_hashsig_public_key_to_der_len(const hal_hashsig_key_t * const key);
extern hal_error_t hal_hashsig_public_key_from_der(hal_hashsig_key_t **key,
void *keybuf, const size_t keybuf_len,
const uint8_t * const der, const size_t der_len);
extern hal_error_t hal_hashsig_sign(hal_core_t *core,
const hal_hashsig_key_t * const key,
const uint8_t * const hash, const size_t hash_len,
uint8_t *signature, size_t *signature_len, const size_t signature_max);
extern hal_error_t hal_hashsig_verify(hal_core_t *core,
const hal_hashsig_key_t * const key,
const uint8_t * const hash, const size_t hash_len,
const uint8_t * const signature, const size_t signature_len);
extern hal_error_t hal_hashsig_key_load_public(hal_hashsig_key_t **key_,
void *keybuf, const size_t keybuf_len,
const size_t L,
const hal_lms_algorithm_t lms_type,
const hal_lmots_algorithm_t lmots_type,
const uint8_t * const I, const size_t I_len,
const uint8_t * const T1, const size_t T1_len);
extern hal_error_t hal_hashsig_key_load_public_xdr(hal_hashsig_key_t **key_,
void *keybuf, const size_t keybuf_len,
const uint8_t * const xdr, const size_t xdr_len);
extern size_t hal_hashsig_signature_len(const size_t L,
const hal_lms_algorithm_t lms_type,
const hal_lmots_algorithm_t lmots_type);
extern size_t hal_hashsig_lmots_private_key_len(const hal_lmots_algorithm_t lmots_type);
extern hal_error_t hal_hashsig_public_key_der_to_xdr(const uint8_t * const der, const size_t der_len,
uint8_t * const xdr, size_t * const xdr_len , const size_t xdr_max);
extern hal_error_t hal_hashsig_ks_init(void);
#endif /* _HAL_HASHSIG_H_ */
