hkdf.h
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1 /**
2  * @file hkdf.h
3  * @brief HKDF (HMAC-based Key Derivation Function)
4  *
5  * @section License
6  *
7  * Copyright (C) 2010-2018 Oryx Embedded SARL. All rights reserved.
8  *
9  * This file is part of CycloneCrypto Open.
10  *
11  * This program is free software; you can redistribute it and/or
12  * modify it under the terms of the GNU General Public License
13  * as published by the Free Software Foundation; either version 2
14  * of the License, or (at your option) any later version.
15  *
16  * This program is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19  * GNU General Public License for more details.
20  *
21  * You should have received a copy of the GNU General Public License
22  * along with this program; if not, write to the Free Software Foundation,
23  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
24  *
25  * @author Oryx Embedded SARL (www.oryx-embedded.com)
26  * @version 1.9.0
27  **/
28 
29 #ifndef _HKDF_H
30 #define _HKDF_H
31 
32 //Dependencies
33 #include "core/crypto.h"
34 
35 //C++ guard
36 #ifdef __cplusplus
37  extern "C" {
38 #endif
39 
40 //HKDF related functions
41 error_t hkdf(const HashAlgo *hash, const uint8_t *ikm, size_t ikmLen,
42  const uint8_t *salt, size_t saltLen, const uint8_t *info, size_t infoLen,
43  uint8_t *okm, size_t okmLen);
44 
45 error_t hkdfExtract(const HashAlgo *hash, const uint8_t *ikm, size_t ikmLen,
46  const uint8_t *salt, size_t saltLen, uint8_t *prk);
47 
48 error_t hkdfExpand(const HashAlgo *hash, const uint8_t *prk, size_t prkLen,
49  const uint8_t *info, size_t infoLen, uint8_t *okm, size_t okmLen);
50 
51 //C++ guard
52 #ifdef __cplusplus
53  }
54 #endif
55 
56 #endif
error_t hkdf(const HashAlgo *hash, const uint8_t *ikm, size_t ikmLen, const uint8_t *salt, size_t saltLen, const uint8_t *info, size_t infoLen, uint8_t *okm, size_t okmLen)
HKDF key derivation function.
Definition: hkdf.c:61
error_t hkdfExpand(const HashAlgo *hash, const uint8_t *prk, size_t prkLen, const uint8_t *info, size_t infoLen, uint8_t *okm, size_t okmLen)
HKDF expand step.
Definition: hkdf.c:148
uint8_t hash
Definition: tls.h:1363
General definitions for cryptographic algorithms.
error_t hkdfExtract(const HashAlgo *hash, const uint8_t *ikm, size_t ikmLen, const uint8_t *salt, size_t saltLen, uint8_t *prk)
HKDF extract step.
Definition: hkdf.c:95
error_t
Error codes.
Definition: error.h:40
Common interface for hash algorithms.
Definition: crypto.h:1054