blake2s256.c
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1 /**
2  * @file blake2s256.c
3  * @brief BLAKE2s-256 hash function
4  *
5  * @section License
6  *
7  * SPDX-License-Identifier: GPL-2.0-or-later
8  *
9  * Copyright (C) 2010-2020 Oryx Embedded SARL. All rights reserved.
10  *
11  * This file is part of CycloneCRYPTO Open.
12  *
13  * This program is free software; you can redistribute it and/or
14  * modify it under the terms of the GNU General Public License
15  * as published by the Free Software Foundation; either version 2
16  * of the License, or (at your option) any later version.
17  *
18  * This program is distributed in the hope that it will be useful,
19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21  * GNU General Public License for more details.
22  *
23  * You should have received a copy of the GNU General Public License
24  * along with this program; if not, write to the Free Software Foundation,
25  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
26  *
27  * @author Oryx Embedded SARL (www.oryx-embedded.com)
28  * @version 1.9.8
29  **/
30 
31 //Switch to the appropriate trace level
32 #define TRACE_LEVEL CRYPTO_TRACE_LEVEL
33 
34 //Dependencies
35 #include "core/crypto.h"
36 #include "hash/blake2s256.h"
37 
38 //Check crypto library configuration
39 #if (BLAKE2S256_SUPPORT == ENABLED)
40 
41 //BLAKE2s-256 object identifier (1.3.6.1.4.1.1722.12.2.2.8)
42 const uint8_t blake2s256Oid[11] = {0x43, 0x06, 0x01, 0x04, 0x01, 0x8D, 0x3A, 0x0C, 0x02, 0x02, 0x08};
43 
44 //Common interface for hash algorithms
46 {
47  "BLAKE2s-256",
49  sizeof(blake2s256Oid),
50  sizeof(Blake2s256Context),
54  FALSE,
59  NULL
60 };
61 
62 
63 /**
64  * @brief Digest a message using BLAKE2s-256
65  * @param[in] data Pointer to the message being hashed
66  * @param[in] length Length of the message
67  * @param[out] digest Pointer to the calculated digest
68  * @return Error code
69  **/
70 
71 error_t blake2s256Compute(const void *data, size_t length, uint8_t *digest)
72 {
73  //Compute the unkeyed hash with BLAKE2s-256
74  return blake2sCompute(NULL, 0, data, length, digest, BLAKE2S256_DIGEST_SIZE);
75 }
76 
77 
78 /**
79  * @brief Initialize BLAKE2s-256 hash computation
80  * @param[in] context Pointer to the BLAKE2s context to initialize
81  **/
82 
84 {
85  //Initialize the hashing context
86  blake2sInit(context, NULL, 0, BLAKE2S256_DIGEST_SIZE);
87 }
88 
89 
90 /**
91  * @brief Update BLAKE2s-256 hash computation
92  * @param[in] context Pointer to the BLAKE2s context
93  * @param[in] data Pointer to the buffer being hashed
94  * @param[in] length Length of the buffer
95  **/
96 
97 void blake2s256Update(Blake2s256Context *context, const void *data, size_t length)
98 {
99  //Digest the data
100  blake2sUpdate(context, data, length);
101 }
102 
103 
104 /**
105  * @brief Finish BLAKE2s-256 hash computation
106  * @param[in] context Pointer to the BLAKE2s context
107  * @param[out] digest Calculated digest (optional parameter)
108  **/
109 
110 void blake2s256Final(Blake2s256Context *context, uint8_t *digest)
111 {
112  //Generate the message digest
113  blake2sFinal(context, digest);
114 }
115 
116 #endif
uint8_t length
Definition: coap_common.h:190
void(* HashAlgoInit)(void *context)
Definition: crypto.h:1028
void blake2sFinal(Blake2sContext *context, uint8_t *digest)
Finish the BLAKE2s message digest.
Definition: blake2s.c:243
uint8_t data[]
Definition: ethernet.h:209
void(* HashAlgoUpdate)(void *context, const void *data, size_t length)
Definition: crypto.h:1029
error_t blake2s256Compute(const void *data, size_t length, uint8_t *digest)
Digest a message using BLAKE2s-256.
Definition: blake2s256.c:71
#define FALSE
Definition: os_port.h:46
void blake2s256Final(Blake2s256Context *context, uint8_t *digest)
Finish BLAKE2s-256 hash computation.
Definition: blake2s256.c:110
const HashAlgo blake2s256HashAlgo
Definition: blake2s256.c:45
error_t
Error codes.
Definition: error.h:42
void blake2sUpdate(Blake2sContext *context, const void *data, size_t length)
Update the BLAKE2s context with a portion of the message being hashed.
Definition: blake2s.c:205
#define BLAKE2S256_MIN_PAD_SIZE
Definition: blake2s256.h:43
General definitions for cryptographic algorithms.
#define BLAKE2S256_DIGEST_SIZE
Definition: blake2s256.h:41
BLAKE2s algorithm context.
Definition: blake2s.h:50
void(* HashAlgoFinal)(void *context, uint8_t *digest)
Definition: crypto.h:1030
error_t blake2sCompute(const void *key, size_t keyLen, const void *data, size_t dataLen, uint8_t *digest, size_t digestLen)
Digest a message using BLAKE2s.
Definition: blake2s.c:98
error_t blake2sInit(Blake2sContext *context, const void *key, size_t keyLen, size_t digestLen)
Initialize BLAKE2s message digest context.
Definition: blake2s.c:145
BLAKE2s-256 hash function.
const uint8_t blake2s256Oid[11]
Definition: blake2s256.c:42
void blake2s256Update(Blake2s256Context *context, const void *data, size_t length)
Update BLAKE2s-256 hash computation.
Definition: blake2s256.c:97
Common interface for hash algorithms.
Definition: crypto.h:1062
error_t(* HashAlgoCompute)(const void *data, size_t length, uint8_t *digest)
Definition: crypto.h:1027
void blake2s256Init(Blake2s256Context *context)
Initialize BLAKE2s-256 hash computation.
Definition: blake2s256.c:83
#define BLAKE2S256_BLOCK_SIZE
Definition: blake2s256.h:39