Mbed TLS v2.28.9
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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 OR GPL-2.0-or-later
12 */
13#ifndef MBEDTLS_HKDF_H
14#define MBEDTLS_HKDF_H
15
16#if !defined(MBEDTLS_CONFIG_FILE)
17#include "mbedtls/config.h"
18#else
19#include MBEDTLS_CONFIG_FILE
20#endif
21
22#include "mbedtls/md.h"
23
29#define MBEDTLS_ERR_HKDF_BAD_INPUT_DATA -0x5F80
32#ifdef __cplusplus
33extern "C" {
34#endif
35
60int mbedtls_hkdf(const mbedtls_md_info_t *md, const unsigned char *salt,
61 size_t salt_len, const unsigned char *ikm, size_t ikm_len,
62 const unsigned char *info, size_t info_len,
63 unsigned char *okm, size_t okm_len);
64
90 const unsigned char *salt, size_t salt_len,
91 const unsigned char *ikm, size_t ikm_len,
92 unsigned char *prk);
93
120int mbedtls_hkdf_expand(const mbedtls_md_info_t *md, const unsigned char *prk,
121 size_t prk_len, const unsigned char *info,
122 size_t info_len, unsigned char *okm, size_t okm_len);
123
124#ifdef __cplusplus
125}
126#endif
127
128#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:78