stm32l0xx_crypto.c
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1 /**
2  * @file stm32l0xx_crypto.c
3  * @brief STM32L0 hardware cryptographic accelerator
4  *
5  * @section License
6  *
7  * SPDX-License-Identifier: GPL-2.0-or-later
8  *
9  * Copyright (C) 2010-2024 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 2.4.0
29  **/
30 
31 //Switch to the appropriate trace level
32 #define TRACE_LEVEL CRYPTO_TRACE_LEVEL
33 
34 //Dependencies
35 #include "core/crypto.h"
39 #include "debug.h"
40 
41 //Global variables
43 
44 
45 /**
46  * @brief Initialize hardware cryptographic accelerator
47  * @return Error code
48  **/
49 
51 {
52  error_t error;
53 
54  //Initialize status code
55  error = NO_ERROR;
56 
57  //Create a mutex to prevent simultaneous access to the hardware
58  //cryptographic accelerator
60  {
61  //Failed to create mutex
62  error = ERROR_OUT_OF_RESOURCES;
63  }
64 
65 #if (STM32L0XX_CRYPTO_TRNG_SUPPORT == ENABLED)
66  //Check status code
67  if(!error)
68  {
69  //Initialize TRNG module
70  error = trngInit();
71  }
72 #endif
73 
74 #if (STM32L0XX_CRYPTO_CIPHER_SUPPORT == ENABLED && AES_SUPPORT == ENABLED)
75  //Check status code
76  if(!error)
77  {
78  //Initialize CRYP module
79  error = crypInit();
80  }
81 #endif
82 
83  //Return status code
84  return error;
85 }
error_t crypInit(void)
CRYP module initialization.
error_t trngInit(void)
TRNG module initialization.
General definitions for cryptographic algorithms.
Debugging facilities.
error_t
Error codes.
Definition: error.h:43
@ ERROR_OUT_OF_RESOURCES
Definition: error.h:64
@ NO_ERROR
Success.
Definition: error.h:44
bool_t osCreateMutex(OsMutex *mutex)
Create a mutex object.
OsMutex stm32l0xxCryptoMutex
error_t stm32l0xxCryptoInit(void)
Initialize hardware cryptographic accelerator.
STM32L0 hardware cryptographic accelerator.
STM32L0 cipher hardware accelerator.
STM32L0 true random number generator.
Mutex object.