hkdf.h

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/*
 *  Copyright The Mbed TLS Contributors
 *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
 *
 *  This file is provided under the Apache License 2.0, or the
 *  GNU General Public License v2.0 or later.
 *
 *  **********
 *  Apache License 2.0:
 *
 *  Licensed under the Apache License, Version 2.0 (the "License"); you may
 *  not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
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 *  **********
 *
 *  **********
 *  GNU General Public License v2.0 or later:
 *
 *  This program 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 2 of the License, or
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 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 */
#ifndef MBEDTLS_HKDF_H
#define MBEDTLS_HKDF_H
 
#if !defined(MBEDTLS_CONFIG_FILE)
#include "config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
 
#include "md.h"
 
#define MBEDTLS_ERR_HKDF_BAD_INPUT_DATA  -0x5F80  
/* \} name */
 
#ifdef __cplusplus
extern "C" {
#endif
 
int mbedtls_hkdf( const mbedtls_md_info_t *md, const unsigned char *salt,
                  size_t salt_len, const unsigned char *ikm, size_t ikm_len,
                  const unsigned char *info, size_t info_len,
                  unsigned char *okm, size_t okm_len );
 
int mbedtls_hkdf_extract( const mbedtls_md_info_t *md,
                          const unsigned char *salt, size_t salt_len,
                          const unsigned char *ikm, size_t ikm_len,
                          unsigned char *prk );
 
int mbedtls_hkdf_expand( const mbedtls_md_info_t *md, const unsigned char *prk,
                         size_t prk_len, const unsigned char *info,
                         size_t info_len, unsigned char *okm, size_t okm_len );
 
#ifdef __cplusplus
}
#endif
 
#endif /* hkdf.h */