esp32_crypto.c
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1 /**
2  * @file esp32_crypto.c
3  * @brief ESP32 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 "esp_private/periph_ctrl.h"
36 #include "core/crypto.h"
42 #include "debug.h"
43 
44 //Global variables
46 
47 
48 /**
49  * @brief Initialize hardware cryptographic accelerator
50  * @return Error code
51  **/
52 
54 {
55  error_t error;
56 
57  //Initialize status code
58  error = NO_ERROR;
59 
60  //Create a mutex to prevent simultaneous access to the hardware
61  //cryptographic accelerator
63  {
64  //Failed to create mutex
65  error = ERROR_OUT_OF_RESOURCES;
66  }
67 
68  //Check status code
69  if(!error)
70  {
71 #if (ESP32_CRYPTO_TRNG_SUPPORT == ENABLED)
72  //Initialize RNG module
73  esp32RngInit();
74 #endif
75 
76 #if (ESP32_CRYPTO_HASH_SUPPORT == ENABLED)
77  //Initialize SHA module
78  esp32ShaInit();
79 #endif
80 
81 #if (ESP32_CRYPTO_CIPHER_SUPPORT == ENABLED && AES_SUPPORT == ENABLED)
82  //Initialize AES module
83  esp32AesInit();
84 #endif
85 
86 #if (ESP32_CRYPTO_PKC_SUPPORT == ENABLED)
87  //Initialize RSA module
88  esp32RsaInit();
89 #endif
90  }
91 
92  //Return status code
93  return error;
94 }
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
OsMutex esp32CryptoMutex
Definition: esp32_crypto.c:45
error_t esp32CryptoInit(void)
Initialize hardware cryptographic accelerator.
Definition: esp32_crypto.c:53
ESP32 hardware cryptographic accelerator.
void esp32AesInit(void)
AES module initialization.
ESP32 cipher hardware accelerator.
void esp32ShaInit(void)
SHA module initialization.
ESP32 hash hardware accelerator.
void esp32RsaInit(void)
RSA module initialization.
ESP32 public-key hardware accelerator.
void esp32RngInit(void)
RNG module initialization.
ESP32 true random number generator.
bool_t osCreateMutex(OsMutex *mutex)
Create a mutex object.
Mutex object.