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hkdf.h
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9/*
10 * Copyright The Mbed TLS Contributors
11 * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
12 *
13 * This file is provided under the Apache License 2.0, or the
14 * GNU General Public License v2.0 or later.
15 *
16 * **********
17 * Apache License 2.0:
18 *
19 * Licensed under the Apache License, Version 2.0 (the "License"); you may
20 * not use this file except in compliance with the License.
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23 * http://www.apache.org/licenses/LICENSE-2.0
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51 */
52#ifndef MBEDTLS_HKDF_H
53#define MBEDTLS_HKDF_H
54
55#if !defined(MBEDTLS_CONFIG_FILE)
56#include "config.h"
57#else
58#include MBEDTLS_CONFIG_FILE
59#endif
60
61#include "md.h"
62
67#define MBEDTLS_ERR_HKDF_BAD_INPUT_DATA -0x5F80
68/* \} name */
69
70#ifdef __cplusplus
71extern "C" {
72#endif
73
98int mbedtls_hkdf( const mbedtls_md_info_t *md, const unsigned char *salt,
99 size_t salt_len, const unsigned char *ikm, size_t ikm_len,
100 const unsigned char *info, size_t info_len,
101 unsigned char *okm, size_t okm_len );
102
128 const unsigned char *salt, size_t salt_len,
129 const unsigned char *ikm, size_t ikm_len,
130 unsigned char *prk );
131
158int mbedtls_hkdf_expand( const mbedtls_md_info_t *md, const unsigned char *prk,
159 size_t prk_len, const unsigned char *info,
160 size_t info_len, unsigned char *okm, size_t okm_len );
161
162#ifdef __cplusplus
163}
164#endif
165
166#endif /* hkdf.h */
#define md
Definition: compat-1.3.h:2013
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)
Expand the supplied prk into several additional pseudorandom keys, which is the output of the HKDF.
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)
Take the input keying material ikm and extract from it a fixed-length pseudorandom key prk.
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)
This is the HMAC-based Extract-and-Expand Key Derivation Function (HKDF).
This file contains the generic message-digest wrapper.