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cryp_stm32.h
1 /**
2  ******************************************************************************
3  * @brief Header file of mbed TLS HW crypto (CRYP) implementation.
4  ******************************************************************************
5  * @attention
6  *
7  * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
8  * SPDX-License-Identifier: Apache-2.0
9  * Copyright (C) 2019-2020 STMicroelectronics, All Rights Reserved
10  *
11  * This software component is licensed by ST under Apache 2.0 license,
12  * the "License"; You may not use this file except in compliance with the
13  * License. You may obtain a copy of the License at:
14  * https://opensource.org/licenses/Apache-2.0
15  *
16  ******************************************************************************
17  */
18 
19 /* Define to prevent recursive inclusion -------------------------------------*/
20 #ifndef __CRYP_H
21 #define __CRYP_H
22 
23 #if !(TARGET_STM32L4)
24 #if defined(MBEDTLS_AES_ALT) || defined(MBEDTLS_CCM_ALT) || defined(MBEDTLS_GCM_ALT)
25 
26 #ifdef __cplusplus
27 extern "C" {
28 #endif
29 
30 /* Includes ------------------------------------------------------------------*/
31 #include "cmsis.h"
32 
33 #if defined(MBEDTLS_THREADING_C)
34 #include "mbedtls/threading.h"
35 #endif
36 
37 /* macros --------------------------------------------------------------------*/
38 /*
39  * 32-bit integer manipulation macros (big endian)
40  */
41 #ifndef GET_UINT32_BE
42 #define GET_UINT32_BE(n,b,i) \
43 do { \
44  (n) = ( (uint32_t) (b)[(i) ] << 24 ) \
45  | ( (uint32_t) (b)[(i) + 1] << 16 ) \
46  | ( (uint32_t) (b)[(i) + 2] << 8 ) \
47  | ( (uint32_t) (b)[(i) + 3] ); \
48 } while( 0 )
49 #endif
50 
51 #ifndef PUT_UINT32_BE
52 #define PUT_UINT32_BE(n,b,i) \
53 do { \
54  (b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
55  (b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
56  (b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
57  (b)[(i) + 3] = (unsigned char) ( (n) ); \
58 } while( 0 )
59 #endif
60 
61 /* constants -----------------------------------------------------------------*/
62 #define ST_CRYP_TIMEOUT 1000 /* timeout (in ms) for the crypto processor */
63 
64 /* defines -------------------------------------------------------------------*/
65 /* AES 192 bits key length may be optional in the HW */
66 #if defined CRYP_KEYSIZE_192B
67 #define USE_AES_KEY192 1
68 #else
69 #define USE_AES_KEY192 0
70 #endif /* USE_AES_KEY192 */
71 
72 /* variables -----------------------------------------------------------------*/
73 #if defined(MBEDTLS_THREADING_C)
74 extern mbedtls_threading_mutex_t cryp_mutex;
75 extern unsigned char cryp_mutex_started;
76 #endif /* MBEDTLS_THREADING_C */
77 
78 extern unsigned int cryp_context_count;
79 
80 /* functions prototypes ------------------------------------------------------*/
81 extern void cryp_zeroize(void *v, size_t n);
82 
83 #ifdef __cplusplus
84 }
85 #endif
86 
87 #endif /* MBEDTLS_AES_ALT or MBEDTLS_CCM_ALT or MBEDTLS_GCM_ALT */
88 #endif /* ! TARGET_STM32L4 */
89 #endif /*__CRYP_H */
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