mbed TLS v2.28.4
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hkdf.h
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1
9/*
10 * Copyright The Mbed TLS Contributors
11 * SPDX-License-Identifier: Apache-2.0
12 *
13 * Licensed under the Apache License, Version 2.0 (the "License"); you may
14 * not use this file except in compliance with the License.
15 * You may obtain a copy of the License at
16 *
17 * http://www.apache.org/licenses/LICENSE-2.0
18 *
19 * Unless required by applicable law or agreed to in writing, software
20 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
21 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
22 * See the License for the specific language governing permissions and
23 * limitations under the License.
24 */
25#ifndef MBEDTLS_HKDF_H
26#define MBEDTLS_HKDF_H
27
28#if !defined(MBEDTLS_CONFIG_FILE)
29#include "mbedtls/config.h"
30#else
31#include MBEDTLS_CONFIG_FILE
32#endif
33
34#include "mbedtls/md.h"
35
41#define MBEDTLS_ERR_HKDF_BAD_INPUT_DATA -0x5F80
44#ifdef __cplusplus
45extern "C" {
46#endif
47
72int mbedtls_hkdf(const mbedtls_md_info_t *md, const unsigned char *salt,
73 size_t salt_len, const unsigned char *ikm, size_t ikm_len,
74 const unsigned char *info, size_t info_len,
75 unsigned char *okm, size_t okm_len);
76
102 const unsigned char *salt, size_t salt_len,
103 const unsigned char *ikm, size_t ikm_len,
104 unsigned char *prk);
105
132int mbedtls_hkdf_expand(const mbedtls_md_info_t *md, const unsigned char *prk,
133 size_t prk_len, const unsigned char *info,
134 size_t info_len, unsigned char *okm, size_t okm_len);
135
136#ifdef __cplusplus
137}
138#endif
139
140#endif /* hkdf.h */
#define md
Configuration options (set of defines)
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.
struct mbedtls_md_info_t mbedtls_md_info_t
Definition md.h:90