shake256.h
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1 /**
2  * @file shake256.h
3  * @brief SHAKE256 extendable-output function (XOF)
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 _SHAKE256_H
30 #define _SHAKE256_H
31 
32 //Dependencies
33 #include "core/crypto.h"
34 #include "xof/keccak.h"
35 
36 //C++ guard
37 #ifdef __cplusplus
38  extern "C" {
39 #endif
40 
41 
42 /**
43  * @brief SHAKE256 algorithm context
44  **/
45 
47 
48 
49 //SHAKE256 related constants
50 extern const uint8_t shake256Oid[9];
51 
52 //SHAKE256 related functions
53 error_t shake256Compute(const void *input, size_t inputLen,
54  uint8_t *output, size_t outputLen);
55 
56 void shake256Init(Shake256Context *context);
57 void shake256Absorb(Shake256Context *context, const void *input, size_t length);
58 void shake256Final(Shake256Context *context);
59 void shake256Squeeze(Shake256Context *context, uint8_t *output, size_t length);
60 
61 //C++ guard
62 #ifdef __cplusplus
63  }
64 #endif
65 
66 #endif
error_t shake256Compute(const void *input, size_t inputLen, uint8_t *output, size_t outputLen)
Digest a message using SHAKE256.
Definition: shake256.c:58
KeccakContext Shake256Context
SHAKE256 algorithm context.
Definition: shake256.h:46
General definitions for cryptographic algorithms.
Keccak sponge function.
void shake256Init(Shake256Context *context)
Initialize SHAKE256 context.
Definition: shake256.c:90
void shake256Squeeze(Shake256Context *context, uint8_t *output, size_t length)
Extract data from the squeezing phase.
Definition: shake256.c:130
Keccak context.
Definition: keccak.h:105
void shake256Absorb(Shake256Context *context, const void *input, size_t length)
Absorb data.
Definition: shake256.c:104
void shake256Final(Shake256Context *context)
Finish absorbing phase.
Definition: shake256.c:116
error_t
Error codes.
Definition: error.h:40
uint8_t length
Definition: dtls_misc.h:140
const uint8_t shake256Oid[9]
Definition: shake256.c:46