fix LPC812 PWM
Fork of mbed-dev by
targets/cmsis/TARGET_STM/TARGET_STM32F4/stm32f4xx_hal_cryp_ex.c@19:112740acecfa, 2015-11-10 (annotated)
- Committer:
- mbed_official
- Date:
- Tue Nov 10 09:30:11 2015 +0000
- Revision:
- 19:112740acecfa
- Parent:
- 0:9b334a45a8ff
Synchronized with git revision 7218418919aeaf775fb8d386ea7ee0dfc0c80ff9
Full URL: https://github.com/mbedmicro/mbed/commit/7218418919aeaf775fb8d386ea7ee0dfc0c80ff9/
DISCO_F469NI - add disco F469NI support
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
bogdanm | 0:9b334a45a8ff | 1 | /** |
bogdanm | 0:9b334a45a8ff | 2 | ****************************************************************************** |
bogdanm | 0:9b334a45a8ff | 3 | * @file stm32f4xx_hal_cryp_ex.c |
bogdanm | 0:9b334a45a8ff | 4 | * @author MCD Application Team |
mbed_official | 19:112740acecfa | 5 | * @version V1.4.1 |
mbed_official | 19:112740acecfa | 6 | * @date 09-October-2015 |
bogdanm | 0:9b334a45a8ff | 7 | * @brief Extended CRYP HAL module driver |
bogdanm | 0:9b334a45a8ff | 8 | * This file provides firmware functions to manage the following |
bogdanm | 0:9b334a45a8ff | 9 | * functionalities of CRYP extension peripheral: |
bogdanm | 0:9b334a45a8ff | 10 | * + Extended AES processing functions |
bogdanm | 0:9b334a45a8ff | 11 | * |
bogdanm | 0:9b334a45a8ff | 12 | @verbatim |
bogdanm | 0:9b334a45a8ff | 13 | ============================================================================== |
bogdanm | 0:9b334a45a8ff | 14 | ##### How to use this driver ##### |
bogdanm | 0:9b334a45a8ff | 15 | ============================================================================== |
bogdanm | 0:9b334a45a8ff | 16 | [..] |
bogdanm | 0:9b334a45a8ff | 17 | The CRYP Extension HAL driver can be used as follows: |
bogdanm | 0:9b334a45a8ff | 18 | (#)Initialize the CRYP low level resources by implementing the HAL_CRYP_MspInit(): |
bogdanm | 0:9b334a45a8ff | 19 | (##) Enable the CRYP interface clock using __HAL_RCC_CRYP_CLK_ENABLE() |
bogdanm | 0:9b334a45a8ff | 20 | (##) In case of using interrupts (e.g. HAL_CRYPEx_AESGCM_Encrypt_IT()) |
bogdanm | 0:9b334a45a8ff | 21 | (+++) Configure the CRYP interrupt priority using HAL_NVIC_SetPriority() |
bogdanm | 0:9b334a45a8ff | 22 | (+++) Enable the CRYP IRQ handler using HAL_NVIC_EnableIRQ() |
bogdanm | 0:9b334a45a8ff | 23 | (+) In CRYP IRQ handler, call HAL_CRYP_IRQHandler() |
bogdanm | 0:9b334a45a8ff | 24 | (##) In case of using DMA to control data transfer (e.g. HAL_AES_ECB_Encrypt_DMA()) |
bogdanm | 0:9b334a45a8ff | 25 | (+++) Enable the DMAx interface clock using __DMAx_CLK_ENABLE() |
bogdanm | 0:9b334a45a8ff | 26 | (+++) Configure and enable two DMA streams one for managing data transfer from |
bogdanm | 0:9b334a45a8ff | 27 | memory to peripheral (input stream) and another stream for managing data |
bogdanm | 0:9b334a45a8ff | 28 | transfer from peripheral to memory (output stream) |
bogdanm | 0:9b334a45a8ff | 29 | (+++) Associate the initialized DMA handle to the CRYP DMA handle |
bogdanm | 0:9b334a45a8ff | 30 | using __HAL_LINKDMA() |
bogdanm | 0:9b334a45a8ff | 31 | (+++) Configure the priority and enable the NVIC for the transfer complete |
bogdanm | 0:9b334a45a8ff | 32 | interrupt on the two DMA Streams. The output stream should have higher |
bogdanm | 0:9b334a45a8ff | 33 | priority than the input stream HAL_NVIC_SetPriority() and HAL_NVIC_EnableIRQ() |
bogdanm | 0:9b334a45a8ff | 34 | (#)Initialize the CRYP HAL using HAL_CRYP_Init(). This function configures mainly: |
bogdanm | 0:9b334a45a8ff | 35 | (##) The data type: 1-bit, 8-bit, 16-bit and 32-bit |
bogdanm | 0:9b334a45a8ff | 36 | (##) The key size: 128, 192 and 256. This parameter is relevant only for AES |
bogdanm | 0:9b334a45a8ff | 37 | (##) The encryption/decryption key. Its size depends on the algorithm |
bogdanm | 0:9b334a45a8ff | 38 | used for encryption/decryption |
bogdanm | 0:9b334a45a8ff | 39 | (##) The initialization vector (counter). It is not used ECB mode. |
bogdanm | 0:9b334a45a8ff | 40 | (#)Three processing (encryption/decryption) functions are available: |
bogdanm | 0:9b334a45a8ff | 41 | (##) Polling mode: encryption and decryption APIs are blocking functions |
bogdanm | 0:9b334a45a8ff | 42 | i.e. they process the data and wait till the processing is finished |
bogdanm | 0:9b334a45a8ff | 43 | e.g. HAL_CRYPEx_AESGCM_Encrypt() |
bogdanm | 0:9b334a45a8ff | 44 | (##) Interrupt mode: encryption and decryption APIs are not blocking functions |
bogdanm | 0:9b334a45a8ff | 45 | i.e. they process the data under interrupt |
bogdanm | 0:9b334a45a8ff | 46 | e.g. HAL_CRYPEx_AESGCM_Encrypt_IT() |
bogdanm | 0:9b334a45a8ff | 47 | (##) DMA mode: encryption and decryption APIs are not blocking functions |
bogdanm | 0:9b334a45a8ff | 48 | i.e. the data transfer is ensured by DMA |
bogdanm | 0:9b334a45a8ff | 49 | e.g. HAL_CRYPEx_AESGCM_Encrypt_DMA() |
bogdanm | 0:9b334a45a8ff | 50 | (#)When the processing function is called at first time after HAL_CRYP_Init() |
bogdanm | 0:9b334a45a8ff | 51 | the CRYP peripheral is initialized and processes the buffer in input. |
bogdanm | 0:9b334a45a8ff | 52 | At second call, the processing function performs an append of the already |
bogdanm | 0:9b334a45a8ff | 53 | processed buffer. |
bogdanm | 0:9b334a45a8ff | 54 | When a new data block is to be processed, call HAL_CRYP_Init() then the |
bogdanm | 0:9b334a45a8ff | 55 | processing function. |
bogdanm | 0:9b334a45a8ff | 56 | (#)In AES-GCM and AES-CCM modes are an authenticated encryption algorithms |
bogdanm | 0:9b334a45a8ff | 57 | which provide authentication messages. |
bogdanm | 0:9b334a45a8ff | 58 | HAL_AES_GCM_Finish() and HAL_AES_CCM_Finish() are used to provide those |
bogdanm | 0:9b334a45a8ff | 59 | authentication messages. |
bogdanm | 0:9b334a45a8ff | 60 | Call those functions after the processing ones (polling, interrupt or DMA). |
bogdanm | 0:9b334a45a8ff | 61 | e.g. in AES-CCM mode call HAL_CRYPEx_AESCCM_Encrypt() to encrypt the plain data |
bogdanm | 0:9b334a45a8ff | 62 | then call HAL_CRYPEx_AESCCM_Finish() to get the authentication message |
bogdanm | 0:9b334a45a8ff | 63 | @note: For CCM Encrypt/Decrypt API's, only DataType = 8-bit is supported by this version. |
bogdanm | 0:9b334a45a8ff | 64 | @note: The HAL_CRYPEx_AESGCM_xxxx() implementation is limited to 32bits inputs data length |
bogdanm | 0:9b334a45a8ff | 65 | (Plain/Cyphertext, Header) compared with GCM standards specifications (800-38D). |
bogdanm | 0:9b334a45a8ff | 66 | (#)Call HAL_CRYP_DeInit() to deinitialize the CRYP peripheral. |
bogdanm | 0:9b334a45a8ff | 67 | |
bogdanm | 0:9b334a45a8ff | 68 | @endverbatim |
bogdanm | 0:9b334a45a8ff | 69 | ****************************************************************************** |
bogdanm | 0:9b334a45a8ff | 70 | * @attention |
bogdanm | 0:9b334a45a8ff | 71 | * |
bogdanm | 0:9b334a45a8ff | 72 | * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2> |
bogdanm | 0:9b334a45a8ff | 73 | * |
bogdanm | 0:9b334a45a8ff | 74 | * Redistribution and use in source and binary forms, with or without modification, |
bogdanm | 0:9b334a45a8ff | 75 | * are permitted provided that the following conditions are met: |
bogdanm | 0:9b334a45a8ff | 76 | * 1. Redistributions of source code must retain the above copyright notice, |
bogdanm | 0:9b334a45a8ff | 77 | * this list of conditions and the following disclaimer. |
bogdanm | 0:9b334a45a8ff | 78 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
bogdanm | 0:9b334a45a8ff | 79 | * this list of conditions and the following disclaimer in the documentation |
bogdanm | 0:9b334a45a8ff | 80 | * and/or other materials provided with the distribution. |
bogdanm | 0:9b334a45a8ff | 81 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
bogdanm | 0:9b334a45a8ff | 82 | * may be used to endorse or promote products derived from this software |
bogdanm | 0:9b334a45a8ff | 83 | * without specific prior written permission. |
bogdanm | 0:9b334a45a8ff | 84 | * |
bogdanm | 0:9b334a45a8ff | 85 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
bogdanm | 0:9b334a45a8ff | 86 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
bogdanm | 0:9b334a45a8ff | 87 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
bogdanm | 0:9b334a45a8ff | 88 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
bogdanm | 0:9b334a45a8ff | 89 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
bogdanm | 0:9b334a45a8ff | 90 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
bogdanm | 0:9b334a45a8ff | 91 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
bogdanm | 0:9b334a45a8ff | 92 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
bogdanm | 0:9b334a45a8ff | 93 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
bogdanm | 0:9b334a45a8ff | 94 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
bogdanm | 0:9b334a45a8ff | 95 | * |
bogdanm | 0:9b334a45a8ff | 96 | ****************************************************************************** |
bogdanm | 0:9b334a45a8ff | 97 | */ |
bogdanm | 0:9b334a45a8ff | 98 | |
bogdanm | 0:9b334a45a8ff | 99 | /* Includes ------------------------------------------------------------------*/ |
bogdanm | 0:9b334a45a8ff | 100 | #include "stm32f4xx_hal.h" |
bogdanm | 0:9b334a45a8ff | 101 | |
bogdanm | 0:9b334a45a8ff | 102 | /** @addtogroup STM32F4xx_HAL_Driver |
bogdanm | 0:9b334a45a8ff | 103 | * @{ |
bogdanm | 0:9b334a45a8ff | 104 | */ |
bogdanm | 0:9b334a45a8ff | 105 | |
bogdanm | 0:9b334a45a8ff | 106 | /** @defgroup CRYPEx CRYPEx |
bogdanm | 0:9b334a45a8ff | 107 | * @brief CRYP Extension HAL module driver. |
bogdanm | 0:9b334a45a8ff | 108 | * @{ |
bogdanm | 0:9b334a45a8ff | 109 | */ |
bogdanm | 0:9b334a45a8ff | 110 | |
bogdanm | 0:9b334a45a8ff | 111 | #ifdef HAL_CRYP_MODULE_ENABLED |
bogdanm | 0:9b334a45a8ff | 112 | |
mbed_official | 19:112740acecfa | 113 | #if defined(STM32F437xx) || defined(STM32F439xx) || defined(STM32F479xx) |
bogdanm | 0:9b334a45a8ff | 114 | |
bogdanm | 0:9b334a45a8ff | 115 | /* Private typedef -----------------------------------------------------------*/ |
bogdanm | 0:9b334a45a8ff | 116 | /* Private define ------------------------------------------------------------*/ |
bogdanm | 0:9b334a45a8ff | 117 | /** @addtogroup CRYPEx_Private_define |
bogdanm | 0:9b334a45a8ff | 118 | * @{ |
bogdanm | 0:9b334a45a8ff | 119 | */ |
bogdanm | 0:9b334a45a8ff | 120 | #define CRYPEx_TIMEOUT_VALUE 1 |
bogdanm | 0:9b334a45a8ff | 121 | /** |
bogdanm | 0:9b334a45a8ff | 122 | * @} |
bogdanm | 0:9b334a45a8ff | 123 | */ |
bogdanm | 0:9b334a45a8ff | 124 | |
bogdanm | 0:9b334a45a8ff | 125 | /* Private macro -------------------------------------------------------------*/ |
bogdanm | 0:9b334a45a8ff | 126 | /* Private variables ---------------------------------------------------------*/ |
bogdanm | 0:9b334a45a8ff | 127 | /* Private function prototypes -----------------------------------------------*/ |
bogdanm | 0:9b334a45a8ff | 128 | /** @defgroup CRYPEx_Private_Functions_prototypes CRYP Private Functions Prototypes |
bogdanm | 0:9b334a45a8ff | 129 | * @{ |
bogdanm | 0:9b334a45a8ff | 130 | */ |
bogdanm | 0:9b334a45a8ff | 131 | static void CRYPEx_GCMCCM_SetInitVector(CRYP_HandleTypeDef *hcryp, uint8_t *InitVector); |
bogdanm | 0:9b334a45a8ff | 132 | static void CRYPEx_GCMCCM_SetKey(CRYP_HandleTypeDef *hcryp, uint8_t *Key, uint32_t KeySize); |
bogdanm | 0:9b334a45a8ff | 133 | static HAL_StatusTypeDef CRYPEx_GCMCCM_ProcessData(CRYP_HandleTypeDef *hcryp, uint8_t *Input, uint16_t Ilength, uint8_t *Output, uint32_t Timeout); |
bogdanm | 0:9b334a45a8ff | 134 | static HAL_StatusTypeDef CRYPEx_GCMCCM_SetHeaderPhase(CRYP_HandleTypeDef *hcryp, uint8_t* Input, uint16_t Ilength, uint32_t Timeout); |
bogdanm | 0:9b334a45a8ff | 135 | static void CRYPEx_GCMCCM_DMAInCplt(DMA_HandleTypeDef *hdma); |
bogdanm | 0:9b334a45a8ff | 136 | static void CRYPEx_GCMCCM_DMAOutCplt(DMA_HandleTypeDef *hdma); |
bogdanm | 0:9b334a45a8ff | 137 | static void CRYPEx_GCMCCM_DMAError(DMA_HandleTypeDef *hdma); |
bogdanm | 0:9b334a45a8ff | 138 | static void CRYPEx_GCMCCM_SetDMAConfig(CRYP_HandleTypeDef *hcryp, uint32_t inputaddr, uint16_t Size, uint32_t outputaddr); |
bogdanm | 0:9b334a45a8ff | 139 | /** |
bogdanm | 0:9b334a45a8ff | 140 | * @} |
bogdanm | 0:9b334a45a8ff | 141 | */ |
bogdanm | 0:9b334a45a8ff | 142 | |
bogdanm | 0:9b334a45a8ff | 143 | /* Private functions ---------------------------------------------------------*/ |
bogdanm | 0:9b334a45a8ff | 144 | /** @addtogroup CRYPEx_Private_Functions |
bogdanm | 0:9b334a45a8ff | 145 | * @{ |
bogdanm | 0:9b334a45a8ff | 146 | */ |
bogdanm | 0:9b334a45a8ff | 147 | |
bogdanm | 0:9b334a45a8ff | 148 | /** |
bogdanm | 0:9b334a45a8ff | 149 | * @brief DMA CRYP Input Data process complete callback. |
bogdanm | 0:9b334a45a8ff | 150 | * @param hdma: DMA handle |
bogdanm | 0:9b334a45a8ff | 151 | * @retval None |
bogdanm | 0:9b334a45a8ff | 152 | */ |
bogdanm | 0:9b334a45a8ff | 153 | static void CRYPEx_GCMCCM_DMAInCplt(DMA_HandleTypeDef *hdma) |
bogdanm | 0:9b334a45a8ff | 154 | { |
bogdanm | 0:9b334a45a8ff | 155 | CRYP_HandleTypeDef* hcryp = ( CRYP_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; |
bogdanm | 0:9b334a45a8ff | 156 | |
bogdanm | 0:9b334a45a8ff | 157 | /* Disable the DMA transfer for input Fifo request by resetting the DIEN bit |
bogdanm | 0:9b334a45a8ff | 158 | in the DMACR register */ |
bogdanm | 0:9b334a45a8ff | 159 | hcryp->Instance->DMACR &= (uint32_t)(~CRYP_DMACR_DIEN); |
bogdanm | 0:9b334a45a8ff | 160 | |
bogdanm | 0:9b334a45a8ff | 161 | /* Call input data transfer complete callback */ |
bogdanm | 0:9b334a45a8ff | 162 | HAL_CRYP_InCpltCallback(hcryp); |
bogdanm | 0:9b334a45a8ff | 163 | } |
bogdanm | 0:9b334a45a8ff | 164 | |
bogdanm | 0:9b334a45a8ff | 165 | /** |
bogdanm | 0:9b334a45a8ff | 166 | * @brief DMA CRYP Output Data process complete callback. |
bogdanm | 0:9b334a45a8ff | 167 | * @param hdma: DMA handle |
bogdanm | 0:9b334a45a8ff | 168 | * @retval None |
bogdanm | 0:9b334a45a8ff | 169 | */ |
bogdanm | 0:9b334a45a8ff | 170 | static void CRYPEx_GCMCCM_DMAOutCplt(DMA_HandleTypeDef *hdma) |
bogdanm | 0:9b334a45a8ff | 171 | { |
bogdanm | 0:9b334a45a8ff | 172 | CRYP_HandleTypeDef* hcryp = ( CRYP_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; |
bogdanm | 0:9b334a45a8ff | 173 | |
bogdanm | 0:9b334a45a8ff | 174 | /* Disable the DMA transfer for output Fifo request by resetting the DOEN bit |
bogdanm | 0:9b334a45a8ff | 175 | in the DMACR register */ |
bogdanm | 0:9b334a45a8ff | 176 | hcryp->Instance->DMACR &= (uint32_t)(~CRYP_DMACR_DOEN); |
bogdanm | 0:9b334a45a8ff | 177 | |
bogdanm | 0:9b334a45a8ff | 178 | /* Enable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 179 | __HAL_CRYP_DISABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 180 | |
bogdanm | 0:9b334a45a8ff | 181 | /* Change the CRYP peripheral state */ |
bogdanm | 0:9b334a45a8ff | 182 | hcryp->State = HAL_CRYP_STATE_READY; |
bogdanm | 0:9b334a45a8ff | 183 | |
bogdanm | 0:9b334a45a8ff | 184 | /* Call output data transfer complete callback */ |
bogdanm | 0:9b334a45a8ff | 185 | HAL_CRYP_OutCpltCallback(hcryp); |
bogdanm | 0:9b334a45a8ff | 186 | } |
bogdanm | 0:9b334a45a8ff | 187 | |
bogdanm | 0:9b334a45a8ff | 188 | /** |
bogdanm | 0:9b334a45a8ff | 189 | * @brief DMA CRYP communication error callback. |
bogdanm | 0:9b334a45a8ff | 190 | * @param hdma: DMA handle |
bogdanm | 0:9b334a45a8ff | 191 | * @retval None |
bogdanm | 0:9b334a45a8ff | 192 | */ |
bogdanm | 0:9b334a45a8ff | 193 | static void CRYPEx_GCMCCM_DMAError(DMA_HandleTypeDef *hdma) |
bogdanm | 0:9b334a45a8ff | 194 | { |
bogdanm | 0:9b334a45a8ff | 195 | CRYP_HandleTypeDef* hcryp = ( CRYP_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; |
bogdanm | 0:9b334a45a8ff | 196 | hcryp->State= HAL_CRYP_STATE_READY; |
bogdanm | 0:9b334a45a8ff | 197 | HAL_CRYP_ErrorCallback(hcryp); |
bogdanm | 0:9b334a45a8ff | 198 | } |
bogdanm | 0:9b334a45a8ff | 199 | |
bogdanm | 0:9b334a45a8ff | 200 | /** |
bogdanm | 0:9b334a45a8ff | 201 | * @brief Writes the Key in Key registers. |
bogdanm | 0:9b334a45a8ff | 202 | * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 203 | * the configuration information for CRYP module |
bogdanm | 0:9b334a45a8ff | 204 | * @param Key: Pointer to Key buffer |
bogdanm | 0:9b334a45a8ff | 205 | * @param KeySize: Size of Key |
bogdanm | 0:9b334a45a8ff | 206 | * @retval None |
bogdanm | 0:9b334a45a8ff | 207 | */ |
bogdanm | 0:9b334a45a8ff | 208 | static void CRYPEx_GCMCCM_SetKey(CRYP_HandleTypeDef *hcryp, uint8_t *Key, uint32_t KeySize) |
bogdanm | 0:9b334a45a8ff | 209 | { |
bogdanm | 0:9b334a45a8ff | 210 | uint32_t keyaddr = (uint32_t)Key; |
bogdanm | 0:9b334a45a8ff | 211 | |
bogdanm | 0:9b334a45a8ff | 212 | switch(KeySize) |
bogdanm | 0:9b334a45a8ff | 213 | { |
bogdanm | 0:9b334a45a8ff | 214 | case CRYP_KEYSIZE_256B: |
bogdanm | 0:9b334a45a8ff | 215 | /* Key Initialisation */ |
bogdanm | 0:9b334a45a8ff | 216 | hcryp->Instance->K0LR = __REV(*(uint32_t*)(keyaddr)); |
bogdanm | 0:9b334a45a8ff | 217 | keyaddr+=4; |
bogdanm | 0:9b334a45a8ff | 218 | hcryp->Instance->K0RR = __REV(*(uint32_t*)(keyaddr)); |
bogdanm | 0:9b334a45a8ff | 219 | keyaddr+=4; |
bogdanm | 0:9b334a45a8ff | 220 | hcryp->Instance->K1LR = __REV(*(uint32_t*)(keyaddr)); |
bogdanm | 0:9b334a45a8ff | 221 | keyaddr+=4; |
bogdanm | 0:9b334a45a8ff | 222 | hcryp->Instance->K1RR = __REV(*(uint32_t*)(keyaddr)); |
bogdanm | 0:9b334a45a8ff | 223 | keyaddr+=4; |
bogdanm | 0:9b334a45a8ff | 224 | hcryp->Instance->K2LR = __REV(*(uint32_t*)(keyaddr)); |
bogdanm | 0:9b334a45a8ff | 225 | keyaddr+=4; |
bogdanm | 0:9b334a45a8ff | 226 | hcryp->Instance->K2RR = __REV(*(uint32_t*)(keyaddr)); |
bogdanm | 0:9b334a45a8ff | 227 | keyaddr+=4; |
bogdanm | 0:9b334a45a8ff | 228 | hcryp->Instance->K3LR = __REV(*(uint32_t*)(keyaddr)); |
bogdanm | 0:9b334a45a8ff | 229 | keyaddr+=4; |
bogdanm | 0:9b334a45a8ff | 230 | hcryp->Instance->K3RR = __REV(*(uint32_t*)(keyaddr)); |
bogdanm | 0:9b334a45a8ff | 231 | break; |
bogdanm | 0:9b334a45a8ff | 232 | case CRYP_KEYSIZE_192B: |
bogdanm | 0:9b334a45a8ff | 233 | hcryp->Instance->K1LR = __REV(*(uint32_t*)(keyaddr)); |
bogdanm | 0:9b334a45a8ff | 234 | keyaddr+=4; |
bogdanm | 0:9b334a45a8ff | 235 | hcryp->Instance->K1RR = __REV(*(uint32_t*)(keyaddr)); |
bogdanm | 0:9b334a45a8ff | 236 | keyaddr+=4; |
bogdanm | 0:9b334a45a8ff | 237 | hcryp->Instance->K2LR = __REV(*(uint32_t*)(keyaddr)); |
bogdanm | 0:9b334a45a8ff | 238 | keyaddr+=4; |
bogdanm | 0:9b334a45a8ff | 239 | hcryp->Instance->K2RR = __REV(*(uint32_t*)(keyaddr)); |
bogdanm | 0:9b334a45a8ff | 240 | keyaddr+=4; |
bogdanm | 0:9b334a45a8ff | 241 | hcryp->Instance->K3LR = __REV(*(uint32_t*)(keyaddr)); |
bogdanm | 0:9b334a45a8ff | 242 | keyaddr+=4; |
bogdanm | 0:9b334a45a8ff | 243 | hcryp->Instance->K3RR = __REV(*(uint32_t*)(keyaddr)); |
bogdanm | 0:9b334a45a8ff | 244 | break; |
bogdanm | 0:9b334a45a8ff | 245 | case CRYP_KEYSIZE_128B: |
bogdanm | 0:9b334a45a8ff | 246 | hcryp->Instance->K2LR = __REV(*(uint32_t*)(keyaddr)); |
bogdanm | 0:9b334a45a8ff | 247 | keyaddr+=4; |
bogdanm | 0:9b334a45a8ff | 248 | hcryp->Instance->K2RR = __REV(*(uint32_t*)(keyaddr)); |
bogdanm | 0:9b334a45a8ff | 249 | keyaddr+=4; |
bogdanm | 0:9b334a45a8ff | 250 | hcryp->Instance->K3LR = __REV(*(uint32_t*)(keyaddr)); |
bogdanm | 0:9b334a45a8ff | 251 | keyaddr+=4; |
bogdanm | 0:9b334a45a8ff | 252 | hcryp->Instance->K3RR = __REV(*(uint32_t*)(keyaddr)); |
bogdanm | 0:9b334a45a8ff | 253 | break; |
bogdanm | 0:9b334a45a8ff | 254 | default: |
bogdanm | 0:9b334a45a8ff | 255 | break; |
bogdanm | 0:9b334a45a8ff | 256 | } |
bogdanm | 0:9b334a45a8ff | 257 | } |
bogdanm | 0:9b334a45a8ff | 258 | |
bogdanm | 0:9b334a45a8ff | 259 | /** |
bogdanm | 0:9b334a45a8ff | 260 | * @brief Writes the InitVector/InitCounter in IV registers. |
bogdanm | 0:9b334a45a8ff | 261 | * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 262 | * the configuration information for CRYP module |
bogdanm | 0:9b334a45a8ff | 263 | * @param InitVector: Pointer to InitVector/InitCounter buffer |
bogdanm | 0:9b334a45a8ff | 264 | * @retval None |
bogdanm | 0:9b334a45a8ff | 265 | */ |
bogdanm | 0:9b334a45a8ff | 266 | static void CRYPEx_GCMCCM_SetInitVector(CRYP_HandleTypeDef *hcryp, uint8_t *InitVector) |
bogdanm | 0:9b334a45a8ff | 267 | { |
bogdanm | 0:9b334a45a8ff | 268 | uint32_t ivaddr = (uint32_t)InitVector; |
bogdanm | 0:9b334a45a8ff | 269 | |
bogdanm | 0:9b334a45a8ff | 270 | hcryp->Instance->IV0LR = __REV(*(uint32_t*)(ivaddr)); |
bogdanm | 0:9b334a45a8ff | 271 | ivaddr+=4; |
bogdanm | 0:9b334a45a8ff | 272 | hcryp->Instance->IV0RR = __REV(*(uint32_t*)(ivaddr)); |
bogdanm | 0:9b334a45a8ff | 273 | ivaddr+=4; |
bogdanm | 0:9b334a45a8ff | 274 | hcryp->Instance->IV1LR = __REV(*(uint32_t*)(ivaddr)); |
bogdanm | 0:9b334a45a8ff | 275 | ivaddr+=4; |
bogdanm | 0:9b334a45a8ff | 276 | hcryp->Instance->IV1RR = __REV(*(uint32_t*)(ivaddr)); |
bogdanm | 0:9b334a45a8ff | 277 | } |
bogdanm | 0:9b334a45a8ff | 278 | |
bogdanm | 0:9b334a45a8ff | 279 | /** |
bogdanm | 0:9b334a45a8ff | 280 | * @brief Process Data: Writes Input data in polling mode and read the Output data. |
bogdanm | 0:9b334a45a8ff | 281 | * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 282 | * the configuration information for CRYP module |
bogdanm | 0:9b334a45a8ff | 283 | * @param Input: Pointer to the Input buffer. |
bogdanm | 0:9b334a45a8ff | 284 | * @param Ilength: Length of the Input buffer, must be a multiple of 16 |
bogdanm | 0:9b334a45a8ff | 285 | * @param Output: Pointer to the returned buffer |
bogdanm | 0:9b334a45a8ff | 286 | * @param Timeout: Timeout value |
bogdanm | 0:9b334a45a8ff | 287 | * @retval None |
bogdanm | 0:9b334a45a8ff | 288 | */ |
bogdanm | 0:9b334a45a8ff | 289 | static HAL_StatusTypeDef CRYPEx_GCMCCM_ProcessData(CRYP_HandleTypeDef *hcryp, uint8_t *Input, uint16_t Ilength, uint8_t *Output, uint32_t Timeout) |
bogdanm | 0:9b334a45a8ff | 290 | { |
bogdanm | 0:9b334a45a8ff | 291 | uint32_t tickstart = 0; |
bogdanm | 0:9b334a45a8ff | 292 | uint32_t i = 0; |
bogdanm | 0:9b334a45a8ff | 293 | uint32_t inputaddr = (uint32_t)Input; |
bogdanm | 0:9b334a45a8ff | 294 | uint32_t outputaddr = (uint32_t)Output; |
bogdanm | 0:9b334a45a8ff | 295 | |
bogdanm | 0:9b334a45a8ff | 296 | for(i=0; (i < Ilength); i+=16) |
bogdanm | 0:9b334a45a8ff | 297 | { |
bogdanm | 0:9b334a45a8ff | 298 | /* Write the Input block in the IN FIFO */ |
bogdanm | 0:9b334a45a8ff | 299 | hcryp->Instance->DR = *(uint32_t*)(inputaddr); |
bogdanm | 0:9b334a45a8ff | 300 | inputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 301 | hcryp->Instance->DR = *(uint32_t*)(inputaddr); |
bogdanm | 0:9b334a45a8ff | 302 | inputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 303 | hcryp->Instance->DR = *(uint32_t*)(inputaddr); |
bogdanm | 0:9b334a45a8ff | 304 | inputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 305 | hcryp->Instance->DR = *(uint32_t*)(inputaddr); |
bogdanm | 0:9b334a45a8ff | 306 | inputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 307 | |
bogdanm | 0:9b334a45a8ff | 308 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 309 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 310 | |
bogdanm | 0:9b334a45a8ff | 311 | while(HAL_IS_BIT_CLR(hcryp->Instance->SR, CRYP_FLAG_OFNE)) |
bogdanm | 0:9b334a45a8ff | 312 | { |
bogdanm | 0:9b334a45a8ff | 313 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 314 | if(Timeout != HAL_MAX_DELAY) |
bogdanm | 0:9b334a45a8ff | 315 | { |
bogdanm | 0:9b334a45a8ff | 316 | if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) |
bogdanm | 0:9b334a45a8ff | 317 | { |
bogdanm | 0:9b334a45a8ff | 318 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 319 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 320 | |
bogdanm | 0:9b334a45a8ff | 321 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 322 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 323 | |
bogdanm | 0:9b334a45a8ff | 324 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 325 | } |
bogdanm | 0:9b334a45a8ff | 326 | } |
bogdanm | 0:9b334a45a8ff | 327 | } |
bogdanm | 0:9b334a45a8ff | 328 | /* Read the Output block from the OUT FIFO */ |
bogdanm | 0:9b334a45a8ff | 329 | *(uint32_t*)(outputaddr) = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 330 | outputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 331 | *(uint32_t*)(outputaddr) = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 332 | outputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 333 | *(uint32_t*)(outputaddr) = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 334 | outputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 335 | *(uint32_t*)(outputaddr) = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 336 | outputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 337 | } |
bogdanm | 0:9b334a45a8ff | 338 | /* Return function status */ |
bogdanm | 0:9b334a45a8ff | 339 | return HAL_OK; |
bogdanm | 0:9b334a45a8ff | 340 | } |
bogdanm | 0:9b334a45a8ff | 341 | |
bogdanm | 0:9b334a45a8ff | 342 | /** |
bogdanm | 0:9b334a45a8ff | 343 | * @brief Sets the header phase |
bogdanm | 0:9b334a45a8ff | 344 | * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 345 | * the configuration information for CRYP module |
bogdanm | 0:9b334a45a8ff | 346 | * @param Input: Pointer to the Input buffer. |
bogdanm | 0:9b334a45a8ff | 347 | * @param Ilength: Length of the Input buffer, must be a multiple of 16 |
bogdanm | 0:9b334a45a8ff | 348 | * @param Timeout: Timeout value |
bogdanm | 0:9b334a45a8ff | 349 | * @retval None |
bogdanm | 0:9b334a45a8ff | 350 | */ |
bogdanm | 0:9b334a45a8ff | 351 | static HAL_StatusTypeDef CRYPEx_GCMCCM_SetHeaderPhase(CRYP_HandleTypeDef *hcryp, uint8_t* Input, uint16_t Ilength, uint32_t Timeout) |
bogdanm | 0:9b334a45a8ff | 352 | { |
bogdanm | 0:9b334a45a8ff | 353 | uint32_t tickstart = 0; |
bogdanm | 0:9b334a45a8ff | 354 | uint32_t loopcounter = 0; |
bogdanm | 0:9b334a45a8ff | 355 | uint32_t headeraddr = (uint32_t)Input; |
bogdanm | 0:9b334a45a8ff | 356 | |
bogdanm | 0:9b334a45a8ff | 357 | /***************************** Header phase *********************************/ |
bogdanm | 0:9b334a45a8ff | 358 | if(hcryp->Init.HeaderSize != 0) |
bogdanm | 0:9b334a45a8ff | 359 | { |
bogdanm | 0:9b334a45a8ff | 360 | /* Select header phase */ |
bogdanm | 0:9b334a45a8ff | 361 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_HEADER); |
bogdanm | 0:9b334a45a8ff | 362 | /* Enable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 363 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 364 | |
bogdanm | 0:9b334a45a8ff | 365 | for(loopcounter = 0; (loopcounter < hcryp->Init.HeaderSize); loopcounter+=16) |
bogdanm | 0:9b334a45a8ff | 366 | { |
bogdanm | 0:9b334a45a8ff | 367 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 368 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 369 | |
bogdanm | 0:9b334a45a8ff | 370 | while(HAL_IS_BIT_CLR(hcryp->Instance->SR, CRYP_FLAG_IFEM)) |
bogdanm | 0:9b334a45a8ff | 371 | { |
bogdanm | 0:9b334a45a8ff | 372 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 373 | if(Timeout != HAL_MAX_DELAY) |
bogdanm | 0:9b334a45a8ff | 374 | { |
bogdanm | 0:9b334a45a8ff | 375 | if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) |
bogdanm | 0:9b334a45a8ff | 376 | { |
bogdanm | 0:9b334a45a8ff | 377 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 378 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 379 | |
bogdanm | 0:9b334a45a8ff | 380 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 381 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 382 | |
bogdanm | 0:9b334a45a8ff | 383 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 384 | } |
bogdanm | 0:9b334a45a8ff | 385 | } |
bogdanm | 0:9b334a45a8ff | 386 | } |
bogdanm | 0:9b334a45a8ff | 387 | /* Write the Input block in the IN FIFO */ |
bogdanm | 0:9b334a45a8ff | 388 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 389 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 390 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 391 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 392 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 393 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 394 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 395 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 396 | } |
bogdanm | 0:9b334a45a8ff | 397 | |
bogdanm | 0:9b334a45a8ff | 398 | /* Wait until the complete message has been processed */ |
bogdanm | 0:9b334a45a8ff | 399 | |
bogdanm | 0:9b334a45a8ff | 400 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 401 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 402 | |
bogdanm | 0:9b334a45a8ff | 403 | while((hcryp->Instance->SR & CRYP_FLAG_BUSY) == CRYP_FLAG_BUSY) |
bogdanm | 0:9b334a45a8ff | 404 | { |
bogdanm | 0:9b334a45a8ff | 405 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 406 | if(Timeout != HAL_MAX_DELAY) |
bogdanm | 0:9b334a45a8ff | 407 | { |
bogdanm | 0:9b334a45a8ff | 408 | if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) |
bogdanm | 0:9b334a45a8ff | 409 | { |
bogdanm | 0:9b334a45a8ff | 410 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 411 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 412 | |
bogdanm | 0:9b334a45a8ff | 413 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 414 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 415 | |
bogdanm | 0:9b334a45a8ff | 416 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 417 | } |
bogdanm | 0:9b334a45a8ff | 418 | } |
bogdanm | 0:9b334a45a8ff | 419 | } |
bogdanm | 0:9b334a45a8ff | 420 | } |
bogdanm | 0:9b334a45a8ff | 421 | /* Return function status */ |
bogdanm | 0:9b334a45a8ff | 422 | return HAL_OK; |
bogdanm | 0:9b334a45a8ff | 423 | } |
bogdanm | 0:9b334a45a8ff | 424 | |
bogdanm | 0:9b334a45a8ff | 425 | /** |
bogdanm | 0:9b334a45a8ff | 426 | * @brief Sets the DMA configuration and start the DMA transfer. |
bogdanm | 0:9b334a45a8ff | 427 | * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 428 | * the configuration information for CRYP module |
bogdanm | 0:9b334a45a8ff | 429 | * @param inputaddr: Address of the Input buffer |
bogdanm | 0:9b334a45a8ff | 430 | * @param Size: Size of the Input buffer, must be a multiple of 16 |
bogdanm | 0:9b334a45a8ff | 431 | * @param outputaddr: Address of the Output buffer |
bogdanm | 0:9b334a45a8ff | 432 | * @retval None |
bogdanm | 0:9b334a45a8ff | 433 | */ |
bogdanm | 0:9b334a45a8ff | 434 | static void CRYPEx_GCMCCM_SetDMAConfig(CRYP_HandleTypeDef *hcryp, uint32_t inputaddr, uint16_t Size, uint32_t outputaddr) |
bogdanm | 0:9b334a45a8ff | 435 | { |
bogdanm | 0:9b334a45a8ff | 436 | /* Set the CRYP DMA transfer complete callback */ |
bogdanm | 0:9b334a45a8ff | 437 | hcryp->hdmain->XferCpltCallback = CRYPEx_GCMCCM_DMAInCplt; |
bogdanm | 0:9b334a45a8ff | 438 | /* Set the DMA error callback */ |
bogdanm | 0:9b334a45a8ff | 439 | hcryp->hdmain->XferErrorCallback = CRYPEx_GCMCCM_DMAError; |
bogdanm | 0:9b334a45a8ff | 440 | |
bogdanm | 0:9b334a45a8ff | 441 | /* Set the CRYP DMA transfer complete callback */ |
bogdanm | 0:9b334a45a8ff | 442 | hcryp->hdmaout->XferCpltCallback = CRYPEx_GCMCCM_DMAOutCplt; |
bogdanm | 0:9b334a45a8ff | 443 | /* Set the DMA error callback */ |
bogdanm | 0:9b334a45a8ff | 444 | hcryp->hdmaout->XferErrorCallback = CRYPEx_GCMCCM_DMAError; |
bogdanm | 0:9b334a45a8ff | 445 | |
bogdanm | 0:9b334a45a8ff | 446 | /* Enable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 447 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 448 | |
bogdanm | 0:9b334a45a8ff | 449 | /* Enable the DMA In DMA Stream */ |
bogdanm | 0:9b334a45a8ff | 450 | HAL_DMA_Start_IT(hcryp->hdmain, inputaddr, (uint32_t)&hcryp->Instance->DR, Size/4); |
bogdanm | 0:9b334a45a8ff | 451 | |
bogdanm | 0:9b334a45a8ff | 452 | /* Enable In DMA request */ |
bogdanm | 0:9b334a45a8ff | 453 | hcryp->Instance->DMACR = CRYP_DMACR_DIEN; |
bogdanm | 0:9b334a45a8ff | 454 | |
bogdanm | 0:9b334a45a8ff | 455 | /* Enable the DMA Out DMA Stream */ |
bogdanm | 0:9b334a45a8ff | 456 | HAL_DMA_Start_IT(hcryp->hdmaout, (uint32_t)&hcryp->Instance->DOUT, outputaddr, Size/4); |
bogdanm | 0:9b334a45a8ff | 457 | |
bogdanm | 0:9b334a45a8ff | 458 | /* Enable Out DMA request */ |
bogdanm | 0:9b334a45a8ff | 459 | hcryp->Instance->DMACR |= CRYP_DMACR_DOEN; |
bogdanm | 0:9b334a45a8ff | 460 | } |
bogdanm | 0:9b334a45a8ff | 461 | |
bogdanm | 0:9b334a45a8ff | 462 | /** |
bogdanm | 0:9b334a45a8ff | 463 | * @} |
bogdanm | 0:9b334a45a8ff | 464 | */ |
bogdanm | 0:9b334a45a8ff | 465 | |
bogdanm | 0:9b334a45a8ff | 466 | /* Exported functions---------------------------------------------------------*/ |
bogdanm | 0:9b334a45a8ff | 467 | /** @addtogroup CRYPEx_Exported_Functions |
bogdanm | 0:9b334a45a8ff | 468 | * @{ |
bogdanm | 0:9b334a45a8ff | 469 | */ |
bogdanm | 0:9b334a45a8ff | 470 | |
bogdanm | 0:9b334a45a8ff | 471 | /** @defgroup CRYPEx_Exported_Functions_Group1 Extended AES processing functions |
bogdanm | 0:9b334a45a8ff | 472 | * @brief Extended processing functions. |
bogdanm | 0:9b334a45a8ff | 473 | * |
bogdanm | 0:9b334a45a8ff | 474 | @verbatim |
bogdanm | 0:9b334a45a8ff | 475 | ============================================================================== |
bogdanm | 0:9b334a45a8ff | 476 | ##### Extended AES processing functions ##### |
bogdanm | 0:9b334a45a8ff | 477 | ============================================================================== |
bogdanm | 0:9b334a45a8ff | 478 | [..] This section provides functions allowing to: |
bogdanm | 0:9b334a45a8ff | 479 | (+) Encrypt plaintext using AES-128/192/256 using GCM and CCM chaining modes |
bogdanm | 0:9b334a45a8ff | 480 | (+) Decrypt cyphertext using AES-128/192/256 using GCM and CCM chaining modes |
bogdanm | 0:9b334a45a8ff | 481 | (+) Finish the processing. This function is available only for GCM and CCM |
bogdanm | 0:9b334a45a8ff | 482 | [..] Three processing methods are available: |
bogdanm | 0:9b334a45a8ff | 483 | (+) Polling mode |
bogdanm | 0:9b334a45a8ff | 484 | (+) Interrupt mode |
bogdanm | 0:9b334a45a8ff | 485 | (+) DMA mode |
bogdanm | 0:9b334a45a8ff | 486 | |
bogdanm | 0:9b334a45a8ff | 487 | @endverbatim |
bogdanm | 0:9b334a45a8ff | 488 | * @{ |
bogdanm | 0:9b334a45a8ff | 489 | */ |
bogdanm | 0:9b334a45a8ff | 490 | |
bogdanm | 0:9b334a45a8ff | 491 | |
bogdanm | 0:9b334a45a8ff | 492 | /** |
bogdanm | 0:9b334a45a8ff | 493 | * @brief Initializes the CRYP peripheral in AES CCM encryption mode then |
bogdanm | 0:9b334a45a8ff | 494 | * encrypt pPlainData. The cypher data are available in pCypherData. |
bogdanm | 0:9b334a45a8ff | 495 | * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 496 | * the configuration information for CRYP module |
bogdanm | 0:9b334a45a8ff | 497 | * @param pPlainData: Pointer to the plaintext buffer |
bogdanm | 0:9b334a45a8ff | 498 | * @param Size: Length of the plaintext buffer, must be a multiple of 16 |
bogdanm | 0:9b334a45a8ff | 499 | * @param pCypherData: Pointer to the cyphertext buffer |
bogdanm | 0:9b334a45a8ff | 500 | * @param Timeout: Timeout duration |
bogdanm | 0:9b334a45a8ff | 501 | * @retval HAL status |
bogdanm | 0:9b334a45a8ff | 502 | */ |
bogdanm | 0:9b334a45a8ff | 503 | HAL_StatusTypeDef HAL_CRYPEx_AESCCM_Encrypt(CRYP_HandleTypeDef *hcryp, uint8_t *pPlainData, uint16_t Size, uint8_t *pCypherData, uint32_t Timeout) |
bogdanm | 0:9b334a45a8ff | 504 | { |
bogdanm | 0:9b334a45a8ff | 505 | uint32_t tickstart = 0; |
bogdanm | 0:9b334a45a8ff | 506 | uint32_t headersize = hcryp->Init.HeaderSize; |
bogdanm | 0:9b334a45a8ff | 507 | uint32_t headeraddr = (uint32_t)hcryp->Init.Header; |
bogdanm | 0:9b334a45a8ff | 508 | uint32_t loopcounter = 0; |
bogdanm | 0:9b334a45a8ff | 509 | uint32_t bufferidx = 0; |
bogdanm | 0:9b334a45a8ff | 510 | uint8_t blockb0[16] = {0};/* Block B0 */ |
bogdanm | 0:9b334a45a8ff | 511 | uint8_t ctr[16] = {0}; /* Counter */ |
bogdanm | 0:9b334a45a8ff | 512 | uint32_t b0addr = (uint32_t)blockb0; |
bogdanm | 0:9b334a45a8ff | 513 | |
bogdanm | 0:9b334a45a8ff | 514 | /* Process Locked */ |
bogdanm | 0:9b334a45a8ff | 515 | __HAL_LOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 516 | |
bogdanm | 0:9b334a45a8ff | 517 | /* Change the CRYP peripheral state */ |
bogdanm | 0:9b334a45a8ff | 518 | hcryp->State = HAL_CRYP_STATE_BUSY; |
bogdanm | 0:9b334a45a8ff | 519 | |
bogdanm | 0:9b334a45a8ff | 520 | /* Check if initialization phase has already been performed */ |
bogdanm | 0:9b334a45a8ff | 521 | if(hcryp->Phase == HAL_CRYP_PHASE_READY) |
bogdanm | 0:9b334a45a8ff | 522 | { |
bogdanm | 0:9b334a45a8ff | 523 | /************************ Formatting the header block *********************/ |
bogdanm | 0:9b334a45a8ff | 524 | if(headersize != 0) |
bogdanm | 0:9b334a45a8ff | 525 | { |
bogdanm | 0:9b334a45a8ff | 526 | /* Check that the associated data (or header) length is lower than 2^16 - 2^8 = 65536 - 256 = 65280 */ |
bogdanm | 0:9b334a45a8ff | 527 | if(headersize < 65280) |
bogdanm | 0:9b334a45a8ff | 528 | { |
bogdanm | 0:9b334a45a8ff | 529 | hcryp->Init.pScratch[bufferidx++] = (uint8_t) ((headersize >> 8) & 0xFF); |
bogdanm | 0:9b334a45a8ff | 530 | hcryp->Init.pScratch[bufferidx++] = (uint8_t) ((headersize) & 0xFF); |
bogdanm | 0:9b334a45a8ff | 531 | headersize += 2; |
bogdanm | 0:9b334a45a8ff | 532 | } |
bogdanm | 0:9b334a45a8ff | 533 | else |
bogdanm | 0:9b334a45a8ff | 534 | { |
bogdanm | 0:9b334a45a8ff | 535 | /* Header is encoded as 0xff || 0xfe || [headersize]32, i.e., six octets */ |
bogdanm | 0:9b334a45a8ff | 536 | hcryp->Init.pScratch[bufferidx++] = 0xFF; |
bogdanm | 0:9b334a45a8ff | 537 | hcryp->Init.pScratch[bufferidx++] = 0xFE; |
bogdanm | 0:9b334a45a8ff | 538 | hcryp->Init.pScratch[bufferidx++] = headersize & 0xff000000; |
bogdanm | 0:9b334a45a8ff | 539 | hcryp->Init.pScratch[bufferidx++] = headersize & 0x00ff0000; |
bogdanm | 0:9b334a45a8ff | 540 | hcryp->Init.pScratch[bufferidx++] = headersize & 0x0000ff00; |
bogdanm | 0:9b334a45a8ff | 541 | hcryp->Init.pScratch[bufferidx++] = headersize & 0x000000ff; |
bogdanm | 0:9b334a45a8ff | 542 | headersize += 6; |
bogdanm | 0:9b334a45a8ff | 543 | } |
bogdanm | 0:9b334a45a8ff | 544 | /* Copy the header buffer in internal buffer "hcryp->Init.pScratch" */ |
bogdanm | 0:9b334a45a8ff | 545 | for(loopcounter = 0; loopcounter < headersize; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 546 | { |
bogdanm | 0:9b334a45a8ff | 547 | hcryp->Init.pScratch[bufferidx++] = hcryp->Init.Header[loopcounter]; |
bogdanm | 0:9b334a45a8ff | 548 | } |
bogdanm | 0:9b334a45a8ff | 549 | /* Check if the header size is modulo 16 */ |
bogdanm | 0:9b334a45a8ff | 550 | if ((headersize % 16) != 0) |
bogdanm | 0:9b334a45a8ff | 551 | { |
bogdanm | 0:9b334a45a8ff | 552 | /* Padd the header buffer with 0s till the hcryp->Init.pScratch length is modulo 16 */ |
bogdanm | 0:9b334a45a8ff | 553 | for(loopcounter = headersize; loopcounter <= ((headersize/16) + 1) * 16; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 554 | { |
bogdanm | 0:9b334a45a8ff | 555 | hcryp->Init.pScratch[loopcounter] = 0; |
bogdanm | 0:9b334a45a8ff | 556 | } |
bogdanm | 0:9b334a45a8ff | 557 | /* Set the header size to modulo 16 */ |
bogdanm | 0:9b334a45a8ff | 558 | headersize = ((headersize/16) + 1) * 16; |
bogdanm | 0:9b334a45a8ff | 559 | } |
bogdanm | 0:9b334a45a8ff | 560 | /* Set the pointer headeraddr to hcryp->Init.pScratch */ |
bogdanm | 0:9b334a45a8ff | 561 | headeraddr = (uint32_t)hcryp->Init.pScratch; |
bogdanm | 0:9b334a45a8ff | 562 | } |
bogdanm | 0:9b334a45a8ff | 563 | /*********************** Formatting the block B0 **************************/ |
bogdanm | 0:9b334a45a8ff | 564 | if(headersize != 0) |
bogdanm | 0:9b334a45a8ff | 565 | { |
bogdanm | 0:9b334a45a8ff | 566 | blockb0[0] = 0x40; |
bogdanm | 0:9b334a45a8ff | 567 | } |
bogdanm | 0:9b334a45a8ff | 568 | /* Flags byte */ |
bogdanm | 0:9b334a45a8ff | 569 | /* blockb0[0] |= 0u | (((( (uint8_t) hcryp->Init.TagSize - 2) / 2) & 0x07 ) << 3 ) | ( ( (uint8_t) (15 - hcryp->Init.IVSize) - 1) & 0x07) */ |
bogdanm | 0:9b334a45a8ff | 570 | blockb0[0] |= (uint8_t)((uint8_t)((uint8_t)(((uint8_t)(hcryp->Init.TagSize - (uint8_t)(2))) >> 1) & (uint8_t)0x07 ) << 3); |
bogdanm | 0:9b334a45a8ff | 571 | blockb0[0] |= (uint8_t)((uint8_t)((uint8_t)((uint8_t)(15) - hcryp->Init.IVSize) - (uint8_t)1) & (uint8_t)0x07); |
bogdanm | 0:9b334a45a8ff | 572 | |
bogdanm | 0:9b334a45a8ff | 573 | for (loopcounter = 0; loopcounter < hcryp->Init.IVSize; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 574 | { |
bogdanm | 0:9b334a45a8ff | 575 | blockb0[loopcounter+1] = hcryp->Init.pInitVect[loopcounter]; |
bogdanm | 0:9b334a45a8ff | 576 | } |
bogdanm | 0:9b334a45a8ff | 577 | for ( ; loopcounter < 13; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 578 | { |
bogdanm | 0:9b334a45a8ff | 579 | blockb0[loopcounter+1] = 0; |
bogdanm | 0:9b334a45a8ff | 580 | } |
bogdanm | 0:9b334a45a8ff | 581 | |
bogdanm | 0:9b334a45a8ff | 582 | blockb0[14] = (Size >> 8); |
bogdanm | 0:9b334a45a8ff | 583 | blockb0[15] = (Size & 0xFF); |
bogdanm | 0:9b334a45a8ff | 584 | |
bogdanm | 0:9b334a45a8ff | 585 | /************************* Formatting the initial counter *****************/ |
bogdanm | 0:9b334a45a8ff | 586 | /* Byte 0: |
bogdanm | 0:9b334a45a8ff | 587 | Bits 7 and 6 are reserved and shall be set to 0 |
bogdanm | 0:9b334a45a8ff | 588 | Bits 3, 4, and 5 shall also be set to 0, to ensure that all the counter blocks |
bogdanm | 0:9b334a45a8ff | 589 | are distinct from B0 |
bogdanm | 0:9b334a45a8ff | 590 | Bits 0, 1, and 2 contain the same encoding of q as in B0 |
bogdanm | 0:9b334a45a8ff | 591 | */ |
bogdanm | 0:9b334a45a8ff | 592 | ctr[0] = blockb0[0] & 0x07; |
bogdanm | 0:9b334a45a8ff | 593 | /* byte 1 to NonceSize is the IV (Nonce) */ |
bogdanm | 0:9b334a45a8ff | 594 | for(loopcounter = 1; loopcounter < hcryp->Init.IVSize + 1; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 595 | { |
bogdanm | 0:9b334a45a8ff | 596 | ctr[loopcounter] = blockb0[loopcounter]; |
bogdanm | 0:9b334a45a8ff | 597 | } |
bogdanm | 0:9b334a45a8ff | 598 | /* Set the LSB to 1 */ |
bogdanm | 0:9b334a45a8ff | 599 | ctr[15] |= 0x01; |
bogdanm | 0:9b334a45a8ff | 600 | |
bogdanm | 0:9b334a45a8ff | 601 | /* Set the key */ |
bogdanm | 0:9b334a45a8ff | 602 | CRYPEx_GCMCCM_SetKey(hcryp, hcryp->Init.pKey, hcryp->Init.KeySize); |
bogdanm | 0:9b334a45a8ff | 603 | |
bogdanm | 0:9b334a45a8ff | 604 | /* Set the CRYP peripheral in AES CCM mode */ |
bogdanm | 0:9b334a45a8ff | 605 | __HAL_CRYP_SET_MODE(hcryp, CRYP_CR_ALGOMODE_AES_CCM_ENCRYPT); |
bogdanm | 0:9b334a45a8ff | 606 | |
bogdanm | 0:9b334a45a8ff | 607 | /* Set the Initialization Vector */ |
bogdanm | 0:9b334a45a8ff | 608 | CRYPEx_GCMCCM_SetInitVector(hcryp, ctr); |
bogdanm | 0:9b334a45a8ff | 609 | |
bogdanm | 0:9b334a45a8ff | 610 | /* Select init phase */ |
bogdanm | 0:9b334a45a8ff | 611 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_INIT); |
bogdanm | 0:9b334a45a8ff | 612 | |
bogdanm | 0:9b334a45a8ff | 613 | b0addr = (uint32_t)blockb0; |
bogdanm | 0:9b334a45a8ff | 614 | /* Write the blockb0 block in the IN FIFO */ |
bogdanm | 0:9b334a45a8ff | 615 | hcryp->Instance->DR = *(uint32_t*)(b0addr); |
bogdanm | 0:9b334a45a8ff | 616 | b0addr+=4; |
bogdanm | 0:9b334a45a8ff | 617 | hcryp->Instance->DR = *(uint32_t*)(b0addr); |
bogdanm | 0:9b334a45a8ff | 618 | b0addr+=4; |
bogdanm | 0:9b334a45a8ff | 619 | hcryp->Instance->DR = *(uint32_t*)(b0addr); |
bogdanm | 0:9b334a45a8ff | 620 | b0addr+=4; |
bogdanm | 0:9b334a45a8ff | 621 | hcryp->Instance->DR = *(uint32_t*)(b0addr); |
bogdanm | 0:9b334a45a8ff | 622 | |
bogdanm | 0:9b334a45a8ff | 623 | /* Enable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 624 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 625 | |
bogdanm | 0:9b334a45a8ff | 626 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 627 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 628 | |
bogdanm | 0:9b334a45a8ff | 629 | while((CRYP->CR & CRYP_CR_CRYPEN) == CRYP_CR_CRYPEN) |
bogdanm | 0:9b334a45a8ff | 630 | { |
bogdanm | 0:9b334a45a8ff | 631 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 632 | if(Timeout != HAL_MAX_DELAY) |
bogdanm | 0:9b334a45a8ff | 633 | { |
bogdanm | 0:9b334a45a8ff | 634 | if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) |
bogdanm | 0:9b334a45a8ff | 635 | { |
bogdanm | 0:9b334a45a8ff | 636 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 637 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 638 | |
bogdanm | 0:9b334a45a8ff | 639 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 640 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 641 | |
bogdanm | 0:9b334a45a8ff | 642 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 643 | } |
bogdanm | 0:9b334a45a8ff | 644 | } |
bogdanm | 0:9b334a45a8ff | 645 | } |
bogdanm | 0:9b334a45a8ff | 646 | /***************************** Header phase *******************************/ |
bogdanm | 0:9b334a45a8ff | 647 | if(headersize != 0) |
bogdanm | 0:9b334a45a8ff | 648 | { |
bogdanm | 0:9b334a45a8ff | 649 | /* Select header phase */ |
bogdanm | 0:9b334a45a8ff | 650 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_HEADER); |
bogdanm | 0:9b334a45a8ff | 651 | |
bogdanm | 0:9b334a45a8ff | 652 | /* Enable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 653 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 654 | |
bogdanm | 0:9b334a45a8ff | 655 | for(loopcounter = 0; (loopcounter < headersize); loopcounter+=16) |
bogdanm | 0:9b334a45a8ff | 656 | { |
bogdanm | 0:9b334a45a8ff | 657 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 658 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 659 | |
bogdanm | 0:9b334a45a8ff | 660 | while(HAL_IS_BIT_CLR(hcryp->Instance->SR, CRYP_FLAG_IFEM)) |
bogdanm | 0:9b334a45a8ff | 661 | { |
bogdanm | 0:9b334a45a8ff | 662 | { |
bogdanm | 0:9b334a45a8ff | 663 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 664 | if(Timeout != HAL_MAX_DELAY) |
bogdanm | 0:9b334a45a8ff | 665 | { |
bogdanm | 0:9b334a45a8ff | 666 | if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) |
bogdanm | 0:9b334a45a8ff | 667 | { |
bogdanm | 0:9b334a45a8ff | 668 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 669 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 670 | |
bogdanm | 0:9b334a45a8ff | 671 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 672 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 673 | |
bogdanm | 0:9b334a45a8ff | 674 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 675 | } |
bogdanm | 0:9b334a45a8ff | 676 | } |
bogdanm | 0:9b334a45a8ff | 677 | } |
bogdanm | 0:9b334a45a8ff | 678 | } |
bogdanm | 0:9b334a45a8ff | 679 | /* Write the header block in the IN FIFO */ |
bogdanm | 0:9b334a45a8ff | 680 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 681 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 682 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 683 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 684 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 685 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 686 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 687 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 688 | } |
bogdanm | 0:9b334a45a8ff | 689 | |
bogdanm | 0:9b334a45a8ff | 690 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 691 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 692 | |
bogdanm | 0:9b334a45a8ff | 693 | while((hcryp->Instance->SR & CRYP_FLAG_BUSY) == CRYP_FLAG_BUSY) |
bogdanm | 0:9b334a45a8ff | 694 | { |
bogdanm | 0:9b334a45a8ff | 695 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 696 | if(Timeout != HAL_MAX_DELAY) |
bogdanm | 0:9b334a45a8ff | 697 | { |
bogdanm | 0:9b334a45a8ff | 698 | if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) |
bogdanm | 0:9b334a45a8ff | 699 | { |
bogdanm | 0:9b334a45a8ff | 700 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 701 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 702 | |
bogdanm | 0:9b334a45a8ff | 703 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 704 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 705 | |
bogdanm | 0:9b334a45a8ff | 706 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 707 | } |
bogdanm | 0:9b334a45a8ff | 708 | } |
bogdanm | 0:9b334a45a8ff | 709 | } |
bogdanm | 0:9b334a45a8ff | 710 | } |
bogdanm | 0:9b334a45a8ff | 711 | /* Save formatted counter into the scratch buffer pScratch */ |
bogdanm | 0:9b334a45a8ff | 712 | for(loopcounter = 0; (loopcounter < 16); loopcounter++) |
bogdanm | 0:9b334a45a8ff | 713 | { |
bogdanm | 0:9b334a45a8ff | 714 | hcryp->Init.pScratch[loopcounter] = ctr[loopcounter]; |
bogdanm | 0:9b334a45a8ff | 715 | } |
bogdanm | 0:9b334a45a8ff | 716 | /* Reset bit 0 */ |
bogdanm | 0:9b334a45a8ff | 717 | hcryp->Init.pScratch[15] &= 0xfe; |
bogdanm | 0:9b334a45a8ff | 718 | |
bogdanm | 0:9b334a45a8ff | 719 | /* Select payload phase once the header phase is performed */ |
bogdanm | 0:9b334a45a8ff | 720 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_PAYLOAD); |
bogdanm | 0:9b334a45a8ff | 721 | |
bogdanm | 0:9b334a45a8ff | 722 | /* Flush FIFO */ |
bogdanm | 0:9b334a45a8ff | 723 | __HAL_CRYP_FIFO_FLUSH(hcryp); |
bogdanm | 0:9b334a45a8ff | 724 | |
bogdanm | 0:9b334a45a8ff | 725 | /* Enable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 726 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 727 | |
bogdanm | 0:9b334a45a8ff | 728 | /* Set the phase */ |
bogdanm | 0:9b334a45a8ff | 729 | hcryp->Phase = HAL_CRYP_PHASE_PROCESS; |
bogdanm | 0:9b334a45a8ff | 730 | } |
bogdanm | 0:9b334a45a8ff | 731 | |
bogdanm | 0:9b334a45a8ff | 732 | /* Write Plain Data and Get Cypher Data */ |
bogdanm | 0:9b334a45a8ff | 733 | if(CRYPEx_GCMCCM_ProcessData(hcryp,pPlainData, Size, pCypherData, Timeout) != HAL_OK) |
bogdanm | 0:9b334a45a8ff | 734 | { |
bogdanm | 0:9b334a45a8ff | 735 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 736 | } |
bogdanm | 0:9b334a45a8ff | 737 | |
bogdanm | 0:9b334a45a8ff | 738 | /* Change the CRYP peripheral state */ |
bogdanm | 0:9b334a45a8ff | 739 | hcryp->State = HAL_CRYP_STATE_READY; |
bogdanm | 0:9b334a45a8ff | 740 | |
bogdanm | 0:9b334a45a8ff | 741 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 742 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 743 | |
bogdanm | 0:9b334a45a8ff | 744 | /* Return function status */ |
bogdanm | 0:9b334a45a8ff | 745 | return HAL_OK; |
bogdanm | 0:9b334a45a8ff | 746 | } |
bogdanm | 0:9b334a45a8ff | 747 | |
bogdanm | 0:9b334a45a8ff | 748 | /** |
bogdanm | 0:9b334a45a8ff | 749 | * @brief Initializes the CRYP peripheral in AES GCM encryption mode then |
bogdanm | 0:9b334a45a8ff | 750 | * encrypt pPlainData. The cypher data are available in pCypherData. |
bogdanm | 0:9b334a45a8ff | 751 | * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 752 | * the configuration information for CRYP module |
bogdanm | 0:9b334a45a8ff | 753 | * @param pPlainData: Pointer to the plaintext buffer |
bogdanm | 0:9b334a45a8ff | 754 | * @param Size: Length of the plaintext buffer, must be a multiple of 16 |
bogdanm | 0:9b334a45a8ff | 755 | * @param pCypherData: Pointer to the cyphertext buffer |
bogdanm | 0:9b334a45a8ff | 756 | * @param Timeout: Timeout duration |
bogdanm | 0:9b334a45a8ff | 757 | * @retval HAL status |
bogdanm | 0:9b334a45a8ff | 758 | */ |
bogdanm | 0:9b334a45a8ff | 759 | HAL_StatusTypeDef HAL_CRYPEx_AESGCM_Encrypt(CRYP_HandleTypeDef *hcryp, uint8_t *pPlainData, uint16_t Size, uint8_t *pCypherData, uint32_t Timeout) |
bogdanm | 0:9b334a45a8ff | 760 | { |
bogdanm | 0:9b334a45a8ff | 761 | uint32_t tickstart = 0; |
bogdanm | 0:9b334a45a8ff | 762 | |
bogdanm | 0:9b334a45a8ff | 763 | /* Process Locked */ |
bogdanm | 0:9b334a45a8ff | 764 | __HAL_LOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 765 | |
bogdanm | 0:9b334a45a8ff | 766 | /* Change the CRYP peripheral state */ |
bogdanm | 0:9b334a45a8ff | 767 | hcryp->State = HAL_CRYP_STATE_BUSY; |
bogdanm | 0:9b334a45a8ff | 768 | |
bogdanm | 0:9b334a45a8ff | 769 | /* Check if initialization phase has already been performed */ |
bogdanm | 0:9b334a45a8ff | 770 | if(hcryp->Phase == HAL_CRYP_PHASE_READY) |
bogdanm | 0:9b334a45a8ff | 771 | { |
bogdanm | 0:9b334a45a8ff | 772 | /* Set the key */ |
bogdanm | 0:9b334a45a8ff | 773 | CRYPEx_GCMCCM_SetKey(hcryp, hcryp->Init.pKey, hcryp->Init.KeySize); |
bogdanm | 0:9b334a45a8ff | 774 | |
bogdanm | 0:9b334a45a8ff | 775 | /* Set the CRYP peripheral in AES GCM mode */ |
bogdanm | 0:9b334a45a8ff | 776 | __HAL_CRYP_SET_MODE(hcryp, CRYP_CR_ALGOMODE_AES_GCM_ENCRYPT); |
bogdanm | 0:9b334a45a8ff | 777 | |
bogdanm | 0:9b334a45a8ff | 778 | /* Set the Initialization Vector */ |
bogdanm | 0:9b334a45a8ff | 779 | CRYPEx_GCMCCM_SetInitVector(hcryp, hcryp->Init.pInitVect); |
bogdanm | 0:9b334a45a8ff | 780 | |
bogdanm | 0:9b334a45a8ff | 781 | /* Flush FIFO */ |
bogdanm | 0:9b334a45a8ff | 782 | __HAL_CRYP_FIFO_FLUSH(hcryp); |
bogdanm | 0:9b334a45a8ff | 783 | |
bogdanm | 0:9b334a45a8ff | 784 | /* Enable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 785 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 786 | |
bogdanm | 0:9b334a45a8ff | 787 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 788 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 789 | |
bogdanm | 0:9b334a45a8ff | 790 | while((CRYP->CR & CRYP_CR_CRYPEN) == CRYP_CR_CRYPEN) |
bogdanm | 0:9b334a45a8ff | 791 | { |
bogdanm | 0:9b334a45a8ff | 792 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 793 | if(Timeout != HAL_MAX_DELAY) |
bogdanm | 0:9b334a45a8ff | 794 | { |
bogdanm | 0:9b334a45a8ff | 795 | if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) |
bogdanm | 0:9b334a45a8ff | 796 | { |
bogdanm | 0:9b334a45a8ff | 797 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 798 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 799 | |
bogdanm | 0:9b334a45a8ff | 800 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 801 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 802 | |
bogdanm | 0:9b334a45a8ff | 803 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 804 | } |
bogdanm | 0:9b334a45a8ff | 805 | } |
bogdanm | 0:9b334a45a8ff | 806 | } |
bogdanm | 0:9b334a45a8ff | 807 | |
bogdanm | 0:9b334a45a8ff | 808 | /* Set the header phase */ |
bogdanm | 0:9b334a45a8ff | 809 | if(CRYPEx_GCMCCM_SetHeaderPhase(hcryp, hcryp->Init.Header, hcryp->Init.HeaderSize, Timeout) != HAL_OK) |
bogdanm | 0:9b334a45a8ff | 810 | { |
bogdanm | 0:9b334a45a8ff | 811 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 812 | } |
bogdanm | 0:9b334a45a8ff | 813 | |
bogdanm | 0:9b334a45a8ff | 814 | /* Disable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 815 | __HAL_CRYP_DISABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 816 | |
bogdanm | 0:9b334a45a8ff | 817 | /* Select payload phase once the header phase is performed */ |
bogdanm | 0:9b334a45a8ff | 818 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_PAYLOAD); |
bogdanm | 0:9b334a45a8ff | 819 | |
bogdanm | 0:9b334a45a8ff | 820 | /* Flush FIFO */ |
bogdanm | 0:9b334a45a8ff | 821 | __HAL_CRYP_FIFO_FLUSH(hcryp); |
bogdanm | 0:9b334a45a8ff | 822 | |
bogdanm | 0:9b334a45a8ff | 823 | /* Enable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 824 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 825 | |
bogdanm | 0:9b334a45a8ff | 826 | /* Set the phase */ |
bogdanm | 0:9b334a45a8ff | 827 | hcryp->Phase = HAL_CRYP_PHASE_PROCESS; |
bogdanm | 0:9b334a45a8ff | 828 | } |
bogdanm | 0:9b334a45a8ff | 829 | |
bogdanm | 0:9b334a45a8ff | 830 | /* Write Plain Data and Get Cypher Data */ |
bogdanm | 0:9b334a45a8ff | 831 | if(CRYPEx_GCMCCM_ProcessData(hcryp, pPlainData, Size, pCypherData, Timeout) != HAL_OK) |
bogdanm | 0:9b334a45a8ff | 832 | { |
bogdanm | 0:9b334a45a8ff | 833 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 834 | } |
bogdanm | 0:9b334a45a8ff | 835 | |
bogdanm | 0:9b334a45a8ff | 836 | /* Change the CRYP peripheral state */ |
bogdanm | 0:9b334a45a8ff | 837 | hcryp->State = HAL_CRYP_STATE_READY; |
bogdanm | 0:9b334a45a8ff | 838 | |
bogdanm | 0:9b334a45a8ff | 839 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 840 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 841 | |
bogdanm | 0:9b334a45a8ff | 842 | /* Return function status */ |
bogdanm | 0:9b334a45a8ff | 843 | return HAL_OK; |
bogdanm | 0:9b334a45a8ff | 844 | } |
bogdanm | 0:9b334a45a8ff | 845 | |
bogdanm | 0:9b334a45a8ff | 846 | /** |
bogdanm | 0:9b334a45a8ff | 847 | * @brief Initializes the CRYP peripheral in AES GCM decryption mode then |
bogdanm | 0:9b334a45a8ff | 848 | * decrypted pCypherData. The cypher data are available in pPlainData. |
bogdanm | 0:9b334a45a8ff | 849 | * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 850 | * the configuration information for CRYP module |
bogdanm | 0:9b334a45a8ff | 851 | * @param pCypherData: Pointer to the cyphertext buffer |
bogdanm | 0:9b334a45a8ff | 852 | * @param Size: Length of the cyphertext buffer, must be a multiple of 16 |
bogdanm | 0:9b334a45a8ff | 853 | * @param pPlainData: Pointer to the plaintext buffer |
bogdanm | 0:9b334a45a8ff | 854 | * @param Timeout: Timeout duration |
bogdanm | 0:9b334a45a8ff | 855 | * @retval HAL status |
bogdanm | 0:9b334a45a8ff | 856 | */ |
bogdanm | 0:9b334a45a8ff | 857 | HAL_StatusTypeDef HAL_CRYPEx_AESGCM_Decrypt(CRYP_HandleTypeDef *hcryp, uint8_t *pCypherData, uint16_t Size, uint8_t *pPlainData, uint32_t Timeout) |
bogdanm | 0:9b334a45a8ff | 858 | { |
bogdanm | 0:9b334a45a8ff | 859 | uint32_t tickstart = 0; |
bogdanm | 0:9b334a45a8ff | 860 | |
bogdanm | 0:9b334a45a8ff | 861 | /* Process Locked */ |
bogdanm | 0:9b334a45a8ff | 862 | __HAL_LOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 863 | |
bogdanm | 0:9b334a45a8ff | 864 | /* Change the CRYP peripheral state */ |
bogdanm | 0:9b334a45a8ff | 865 | hcryp->State = HAL_CRYP_STATE_BUSY; |
bogdanm | 0:9b334a45a8ff | 866 | |
bogdanm | 0:9b334a45a8ff | 867 | /* Check if initialization phase has already been performed */ |
bogdanm | 0:9b334a45a8ff | 868 | if(hcryp->Phase == HAL_CRYP_PHASE_READY) |
bogdanm | 0:9b334a45a8ff | 869 | { |
bogdanm | 0:9b334a45a8ff | 870 | /* Set the key */ |
bogdanm | 0:9b334a45a8ff | 871 | CRYPEx_GCMCCM_SetKey(hcryp, hcryp->Init.pKey, hcryp->Init.KeySize); |
bogdanm | 0:9b334a45a8ff | 872 | |
bogdanm | 0:9b334a45a8ff | 873 | /* Set the CRYP peripheral in AES GCM decryption mode */ |
bogdanm | 0:9b334a45a8ff | 874 | __HAL_CRYP_SET_MODE(hcryp, CRYP_CR_ALGOMODE_AES_GCM_DECRYPT); |
bogdanm | 0:9b334a45a8ff | 875 | |
bogdanm | 0:9b334a45a8ff | 876 | /* Set the Initialization Vector */ |
bogdanm | 0:9b334a45a8ff | 877 | CRYPEx_GCMCCM_SetInitVector(hcryp, hcryp->Init.pInitVect); |
bogdanm | 0:9b334a45a8ff | 878 | |
bogdanm | 0:9b334a45a8ff | 879 | /* Flush FIFO */ |
bogdanm | 0:9b334a45a8ff | 880 | __HAL_CRYP_FIFO_FLUSH(hcryp); |
bogdanm | 0:9b334a45a8ff | 881 | |
bogdanm | 0:9b334a45a8ff | 882 | /* Enable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 883 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 884 | |
bogdanm | 0:9b334a45a8ff | 885 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 886 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 887 | |
bogdanm | 0:9b334a45a8ff | 888 | while((CRYP->CR & CRYP_CR_CRYPEN) == CRYP_CR_CRYPEN) |
bogdanm | 0:9b334a45a8ff | 889 | { |
bogdanm | 0:9b334a45a8ff | 890 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 891 | if(Timeout != HAL_MAX_DELAY) |
bogdanm | 0:9b334a45a8ff | 892 | { |
bogdanm | 0:9b334a45a8ff | 893 | if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) |
bogdanm | 0:9b334a45a8ff | 894 | { |
bogdanm | 0:9b334a45a8ff | 895 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 896 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 897 | |
bogdanm | 0:9b334a45a8ff | 898 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 899 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 900 | |
bogdanm | 0:9b334a45a8ff | 901 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 902 | } |
bogdanm | 0:9b334a45a8ff | 903 | } |
bogdanm | 0:9b334a45a8ff | 904 | } |
bogdanm | 0:9b334a45a8ff | 905 | |
bogdanm | 0:9b334a45a8ff | 906 | /* Set the header phase */ |
bogdanm | 0:9b334a45a8ff | 907 | if(CRYPEx_GCMCCM_SetHeaderPhase(hcryp, hcryp->Init.Header, hcryp->Init.HeaderSize, Timeout) != HAL_OK) |
bogdanm | 0:9b334a45a8ff | 908 | { |
bogdanm | 0:9b334a45a8ff | 909 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 910 | } |
bogdanm | 0:9b334a45a8ff | 911 | /* Disable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 912 | __HAL_CRYP_DISABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 913 | |
bogdanm | 0:9b334a45a8ff | 914 | /* Select payload phase once the header phase is performed */ |
bogdanm | 0:9b334a45a8ff | 915 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_PAYLOAD); |
bogdanm | 0:9b334a45a8ff | 916 | |
bogdanm | 0:9b334a45a8ff | 917 | /* Enable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 918 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 919 | |
bogdanm | 0:9b334a45a8ff | 920 | /* Set the phase */ |
bogdanm | 0:9b334a45a8ff | 921 | hcryp->Phase = HAL_CRYP_PHASE_PROCESS; |
bogdanm | 0:9b334a45a8ff | 922 | } |
bogdanm | 0:9b334a45a8ff | 923 | |
bogdanm | 0:9b334a45a8ff | 924 | /* Write Plain Data and Get Cypher Data */ |
bogdanm | 0:9b334a45a8ff | 925 | if(CRYPEx_GCMCCM_ProcessData(hcryp, pCypherData, Size, pPlainData, Timeout) != HAL_OK) |
bogdanm | 0:9b334a45a8ff | 926 | { |
bogdanm | 0:9b334a45a8ff | 927 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 928 | } |
bogdanm | 0:9b334a45a8ff | 929 | |
bogdanm | 0:9b334a45a8ff | 930 | /* Change the CRYP peripheral state */ |
bogdanm | 0:9b334a45a8ff | 931 | hcryp->State = HAL_CRYP_STATE_READY; |
bogdanm | 0:9b334a45a8ff | 932 | |
bogdanm | 0:9b334a45a8ff | 933 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 934 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 935 | |
bogdanm | 0:9b334a45a8ff | 936 | /* Return function status */ |
bogdanm | 0:9b334a45a8ff | 937 | return HAL_OK; |
bogdanm | 0:9b334a45a8ff | 938 | } |
bogdanm | 0:9b334a45a8ff | 939 | |
bogdanm | 0:9b334a45a8ff | 940 | /** |
bogdanm | 0:9b334a45a8ff | 941 | * @brief Computes the authentication TAG. |
bogdanm | 0:9b334a45a8ff | 942 | * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 943 | * the configuration information for CRYP module |
bogdanm | 0:9b334a45a8ff | 944 | * @param Size: Total length of the plain/cyphertext buffer |
bogdanm | 0:9b334a45a8ff | 945 | * @param AuthTag: Pointer to the authentication buffer |
bogdanm | 0:9b334a45a8ff | 946 | * @param Timeout: Timeout duration |
bogdanm | 0:9b334a45a8ff | 947 | * @retval HAL status |
bogdanm | 0:9b334a45a8ff | 948 | */ |
bogdanm | 0:9b334a45a8ff | 949 | HAL_StatusTypeDef HAL_CRYPEx_AESGCM_Finish(CRYP_HandleTypeDef *hcryp, uint32_t Size, uint8_t *AuthTag, uint32_t Timeout) |
bogdanm | 0:9b334a45a8ff | 950 | { |
bogdanm | 0:9b334a45a8ff | 951 | uint32_t tickstart = 0; |
bogdanm | 0:9b334a45a8ff | 952 | uint64_t headerlength = hcryp->Init.HeaderSize * 8; /* Header length in bits */ |
bogdanm | 0:9b334a45a8ff | 953 | uint64_t inputlength = Size * 8; /* input length in bits */ |
bogdanm | 0:9b334a45a8ff | 954 | uint32_t tagaddr = (uint32_t)AuthTag; |
bogdanm | 0:9b334a45a8ff | 955 | |
bogdanm | 0:9b334a45a8ff | 956 | /* Process Locked */ |
bogdanm | 0:9b334a45a8ff | 957 | __HAL_LOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 958 | |
bogdanm | 0:9b334a45a8ff | 959 | /* Change the CRYP peripheral state */ |
bogdanm | 0:9b334a45a8ff | 960 | hcryp->State = HAL_CRYP_STATE_BUSY; |
bogdanm | 0:9b334a45a8ff | 961 | |
bogdanm | 0:9b334a45a8ff | 962 | /* Check if initialization phase has already been performed */ |
bogdanm | 0:9b334a45a8ff | 963 | if(hcryp->Phase == HAL_CRYP_PHASE_PROCESS) |
bogdanm | 0:9b334a45a8ff | 964 | { |
bogdanm | 0:9b334a45a8ff | 965 | /* Change the CRYP phase */ |
bogdanm | 0:9b334a45a8ff | 966 | hcryp->Phase = HAL_CRYP_PHASE_FINAL; |
bogdanm | 0:9b334a45a8ff | 967 | |
bogdanm | 0:9b334a45a8ff | 968 | /* Disable CRYP to start the final phase */ |
bogdanm | 0:9b334a45a8ff | 969 | __HAL_CRYP_DISABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 970 | |
bogdanm | 0:9b334a45a8ff | 971 | /* Select final phase */ |
bogdanm | 0:9b334a45a8ff | 972 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_FINAL); |
bogdanm | 0:9b334a45a8ff | 973 | |
bogdanm | 0:9b334a45a8ff | 974 | /* Enable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 975 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 976 | |
bogdanm | 0:9b334a45a8ff | 977 | /* Write the number of bits in header (64 bits) followed by the number of bits |
bogdanm | 0:9b334a45a8ff | 978 | in the payload */ |
bogdanm | 0:9b334a45a8ff | 979 | if(hcryp->Init.DataType == CRYP_DATATYPE_1B) |
bogdanm | 0:9b334a45a8ff | 980 | { |
bogdanm | 0:9b334a45a8ff | 981 | hcryp->Instance->DR = __RBIT(headerlength >> 32); |
bogdanm | 0:9b334a45a8ff | 982 | hcryp->Instance->DR = __RBIT(headerlength); |
bogdanm | 0:9b334a45a8ff | 983 | hcryp->Instance->DR = __RBIT(inputlength >> 32); |
bogdanm | 0:9b334a45a8ff | 984 | hcryp->Instance->DR = __RBIT(inputlength); |
bogdanm | 0:9b334a45a8ff | 985 | } |
bogdanm | 0:9b334a45a8ff | 986 | else if(hcryp->Init.DataType == CRYP_DATATYPE_8B) |
bogdanm | 0:9b334a45a8ff | 987 | { |
bogdanm | 0:9b334a45a8ff | 988 | hcryp->Instance->DR = __REV(headerlength >> 32); |
bogdanm | 0:9b334a45a8ff | 989 | hcryp->Instance->DR = __REV(headerlength); |
bogdanm | 0:9b334a45a8ff | 990 | hcryp->Instance->DR = __REV(inputlength >> 32); |
bogdanm | 0:9b334a45a8ff | 991 | hcryp->Instance->DR = __REV(inputlength); |
bogdanm | 0:9b334a45a8ff | 992 | } |
bogdanm | 0:9b334a45a8ff | 993 | else if(hcryp->Init.DataType == CRYP_DATATYPE_16B) |
bogdanm | 0:9b334a45a8ff | 994 | { |
bogdanm | 0:9b334a45a8ff | 995 | hcryp->Instance->DR = __ROR((uint32_t)(headerlength >> 32), 16); |
bogdanm | 0:9b334a45a8ff | 996 | hcryp->Instance->DR = __ROR((uint32_t)headerlength, 16); |
bogdanm | 0:9b334a45a8ff | 997 | hcryp->Instance->DR = __ROR((uint32_t)(inputlength >> 32), 16); |
bogdanm | 0:9b334a45a8ff | 998 | hcryp->Instance->DR = __ROR((uint32_t)inputlength, 16); |
bogdanm | 0:9b334a45a8ff | 999 | } |
bogdanm | 0:9b334a45a8ff | 1000 | else if(hcryp->Init.DataType == CRYP_DATATYPE_32B) |
bogdanm | 0:9b334a45a8ff | 1001 | { |
bogdanm | 0:9b334a45a8ff | 1002 | hcryp->Instance->DR = (uint32_t)(headerlength >> 32); |
bogdanm | 0:9b334a45a8ff | 1003 | hcryp->Instance->DR = (uint32_t)(headerlength); |
bogdanm | 0:9b334a45a8ff | 1004 | hcryp->Instance->DR = (uint32_t)(inputlength >> 32); |
bogdanm | 0:9b334a45a8ff | 1005 | hcryp->Instance->DR = (uint32_t)(inputlength); |
bogdanm | 0:9b334a45a8ff | 1006 | } |
bogdanm | 0:9b334a45a8ff | 1007 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 1008 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 1009 | |
bogdanm | 0:9b334a45a8ff | 1010 | while(HAL_IS_BIT_CLR(hcryp->Instance->SR, CRYP_FLAG_OFNE)) |
bogdanm | 0:9b334a45a8ff | 1011 | { |
bogdanm | 0:9b334a45a8ff | 1012 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 1013 | if(Timeout != HAL_MAX_DELAY) |
bogdanm | 0:9b334a45a8ff | 1014 | { |
bogdanm | 0:9b334a45a8ff | 1015 | if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) |
bogdanm | 0:9b334a45a8ff | 1016 | { |
bogdanm | 0:9b334a45a8ff | 1017 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 1018 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 1019 | |
bogdanm | 0:9b334a45a8ff | 1020 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 1021 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 1022 | |
bogdanm | 0:9b334a45a8ff | 1023 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 1024 | } |
bogdanm | 0:9b334a45a8ff | 1025 | } |
bogdanm | 0:9b334a45a8ff | 1026 | } |
bogdanm | 0:9b334a45a8ff | 1027 | |
bogdanm | 0:9b334a45a8ff | 1028 | /* Read the Auth TAG in the IN FIFO */ |
bogdanm | 0:9b334a45a8ff | 1029 | *(uint32_t*)(tagaddr) = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 1030 | tagaddr+=4; |
bogdanm | 0:9b334a45a8ff | 1031 | *(uint32_t*)(tagaddr) = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 1032 | tagaddr+=4; |
bogdanm | 0:9b334a45a8ff | 1033 | *(uint32_t*)(tagaddr) = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 1034 | tagaddr+=4; |
bogdanm | 0:9b334a45a8ff | 1035 | *(uint32_t*)(tagaddr) = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 1036 | } |
bogdanm | 0:9b334a45a8ff | 1037 | |
bogdanm | 0:9b334a45a8ff | 1038 | /* Change the CRYP peripheral state */ |
bogdanm | 0:9b334a45a8ff | 1039 | hcryp->State = HAL_CRYP_STATE_READY; |
bogdanm | 0:9b334a45a8ff | 1040 | |
bogdanm | 0:9b334a45a8ff | 1041 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 1042 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 1043 | |
bogdanm | 0:9b334a45a8ff | 1044 | /* Return function status */ |
bogdanm | 0:9b334a45a8ff | 1045 | return HAL_OK; |
bogdanm | 0:9b334a45a8ff | 1046 | } |
bogdanm | 0:9b334a45a8ff | 1047 | |
bogdanm | 0:9b334a45a8ff | 1048 | /** |
bogdanm | 0:9b334a45a8ff | 1049 | * @brief Computes the authentication TAG for AES CCM mode. |
bogdanm | 0:9b334a45a8ff | 1050 | * @note This API is called after HAL_AES_CCM_Encrypt()/HAL_AES_CCM_Decrypt() |
bogdanm | 0:9b334a45a8ff | 1051 | * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 1052 | * the configuration information for CRYP module |
bogdanm | 0:9b334a45a8ff | 1053 | * @param AuthTag: Pointer to the authentication buffer |
bogdanm | 0:9b334a45a8ff | 1054 | * @param Timeout: Timeout duration |
bogdanm | 0:9b334a45a8ff | 1055 | * @retval HAL status |
bogdanm | 0:9b334a45a8ff | 1056 | */ |
bogdanm | 0:9b334a45a8ff | 1057 | HAL_StatusTypeDef HAL_CRYPEx_AESCCM_Finish(CRYP_HandleTypeDef *hcryp, uint8_t *AuthTag, uint32_t Timeout) |
bogdanm | 0:9b334a45a8ff | 1058 | { |
bogdanm | 0:9b334a45a8ff | 1059 | uint32_t tickstart = 0; |
bogdanm | 0:9b334a45a8ff | 1060 | uint32_t tagaddr = (uint32_t)AuthTag; |
bogdanm | 0:9b334a45a8ff | 1061 | uint32_t ctraddr = (uint32_t)hcryp->Init.pScratch; |
bogdanm | 0:9b334a45a8ff | 1062 | uint32_t temptag[4] = {0}; /* Temporary TAG (MAC) */ |
bogdanm | 0:9b334a45a8ff | 1063 | uint32_t loopcounter; |
bogdanm | 0:9b334a45a8ff | 1064 | |
bogdanm | 0:9b334a45a8ff | 1065 | /* Process Locked */ |
bogdanm | 0:9b334a45a8ff | 1066 | __HAL_LOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 1067 | |
bogdanm | 0:9b334a45a8ff | 1068 | /* Change the CRYP peripheral state */ |
bogdanm | 0:9b334a45a8ff | 1069 | hcryp->State = HAL_CRYP_STATE_BUSY; |
bogdanm | 0:9b334a45a8ff | 1070 | |
bogdanm | 0:9b334a45a8ff | 1071 | /* Check if initialization phase has already been performed */ |
bogdanm | 0:9b334a45a8ff | 1072 | if(hcryp->Phase == HAL_CRYP_PHASE_PROCESS) |
bogdanm | 0:9b334a45a8ff | 1073 | { |
bogdanm | 0:9b334a45a8ff | 1074 | /* Change the CRYP phase */ |
bogdanm | 0:9b334a45a8ff | 1075 | hcryp->Phase = HAL_CRYP_PHASE_FINAL; |
bogdanm | 0:9b334a45a8ff | 1076 | |
bogdanm | 0:9b334a45a8ff | 1077 | /* Disable CRYP to start the final phase */ |
bogdanm | 0:9b334a45a8ff | 1078 | __HAL_CRYP_DISABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 1079 | |
bogdanm | 0:9b334a45a8ff | 1080 | /* Select final phase */ |
bogdanm | 0:9b334a45a8ff | 1081 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_FINAL); |
bogdanm | 0:9b334a45a8ff | 1082 | |
bogdanm | 0:9b334a45a8ff | 1083 | /* Enable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 1084 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 1085 | |
bogdanm | 0:9b334a45a8ff | 1086 | /* Write the counter block in the IN FIFO */ |
bogdanm | 0:9b334a45a8ff | 1087 | hcryp->Instance->DR = *(uint32_t*)ctraddr; |
bogdanm | 0:9b334a45a8ff | 1088 | ctraddr+=4; |
bogdanm | 0:9b334a45a8ff | 1089 | hcryp->Instance->DR = *(uint32_t*)ctraddr; |
bogdanm | 0:9b334a45a8ff | 1090 | ctraddr+=4; |
bogdanm | 0:9b334a45a8ff | 1091 | hcryp->Instance->DR = *(uint32_t*)ctraddr; |
bogdanm | 0:9b334a45a8ff | 1092 | ctraddr+=4; |
bogdanm | 0:9b334a45a8ff | 1093 | hcryp->Instance->DR = *(uint32_t*)ctraddr; |
bogdanm | 0:9b334a45a8ff | 1094 | |
bogdanm | 0:9b334a45a8ff | 1095 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 1096 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 1097 | |
bogdanm | 0:9b334a45a8ff | 1098 | while(HAL_IS_BIT_CLR(hcryp->Instance->SR, CRYP_FLAG_OFNE)) |
bogdanm | 0:9b334a45a8ff | 1099 | { |
bogdanm | 0:9b334a45a8ff | 1100 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 1101 | if(Timeout != HAL_MAX_DELAY) |
bogdanm | 0:9b334a45a8ff | 1102 | { |
bogdanm | 0:9b334a45a8ff | 1103 | if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) |
bogdanm | 0:9b334a45a8ff | 1104 | { |
bogdanm | 0:9b334a45a8ff | 1105 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 1106 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 1107 | |
bogdanm | 0:9b334a45a8ff | 1108 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 1109 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 1110 | |
bogdanm | 0:9b334a45a8ff | 1111 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 1112 | } |
bogdanm | 0:9b334a45a8ff | 1113 | } |
bogdanm | 0:9b334a45a8ff | 1114 | } |
bogdanm | 0:9b334a45a8ff | 1115 | |
bogdanm | 0:9b334a45a8ff | 1116 | /* Read the Auth TAG in the IN FIFO */ |
bogdanm | 0:9b334a45a8ff | 1117 | temptag[0] = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 1118 | temptag[1] = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 1119 | temptag[2] = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 1120 | temptag[3] = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 1121 | } |
bogdanm | 0:9b334a45a8ff | 1122 | |
bogdanm | 0:9b334a45a8ff | 1123 | /* Copy temporary authentication TAG in user TAG buffer */ |
bogdanm | 0:9b334a45a8ff | 1124 | for(loopcounter = 0; loopcounter < hcryp->Init.TagSize ; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 1125 | { |
bogdanm | 0:9b334a45a8ff | 1126 | /* Set the authentication TAG buffer */ |
bogdanm | 0:9b334a45a8ff | 1127 | *((uint8_t*)tagaddr+loopcounter) = *((uint8_t*)temptag+loopcounter); |
bogdanm | 0:9b334a45a8ff | 1128 | } |
bogdanm | 0:9b334a45a8ff | 1129 | |
bogdanm | 0:9b334a45a8ff | 1130 | /* Change the CRYP peripheral state */ |
bogdanm | 0:9b334a45a8ff | 1131 | hcryp->State = HAL_CRYP_STATE_READY; |
bogdanm | 0:9b334a45a8ff | 1132 | |
bogdanm | 0:9b334a45a8ff | 1133 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 1134 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 1135 | |
bogdanm | 0:9b334a45a8ff | 1136 | /* Return function status */ |
bogdanm | 0:9b334a45a8ff | 1137 | return HAL_OK; |
bogdanm | 0:9b334a45a8ff | 1138 | } |
bogdanm | 0:9b334a45a8ff | 1139 | |
bogdanm | 0:9b334a45a8ff | 1140 | /** |
bogdanm | 0:9b334a45a8ff | 1141 | * @brief Initializes the CRYP peripheral in AES CCM decryption mode then |
bogdanm | 0:9b334a45a8ff | 1142 | * decrypted pCypherData. The cypher data are available in pPlainData. |
bogdanm | 0:9b334a45a8ff | 1143 | * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 1144 | * the configuration information for CRYP module |
bogdanm | 0:9b334a45a8ff | 1145 | * @param pPlainData: Pointer to the plaintext buffer |
bogdanm | 0:9b334a45a8ff | 1146 | * @param Size: Length of the plaintext buffer, must be a multiple of 16 |
bogdanm | 0:9b334a45a8ff | 1147 | * @param pCypherData: Pointer to the cyphertext buffer |
bogdanm | 0:9b334a45a8ff | 1148 | * @param Timeout: Timeout duration |
bogdanm | 0:9b334a45a8ff | 1149 | * @retval HAL status |
bogdanm | 0:9b334a45a8ff | 1150 | */ |
bogdanm | 0:9b334a45a8ff | 1151 | HAL_StatusTypeDef HAL_CRYPEx_AESCCM_Decrypt(CRYP_HandleTypeDef *hcryp, uint8_t *pCypherData, uint16_t Size, uint8_t *pPlainData, uint32_t Timeout) |
bogdanm | 0:9b334a45a8ff | 1152 | { |
bogdanm | 0:9b334a45a8ff | 1153 | uint32_t tickstart = 0; |
bogdanm | 0:9b334a45a8ff | 1154 | uint32_t headersize = hcryp->Init.HeaderSize; |
bogdanm | 0:9b334a45a8ff | 1155 | uint32_t headeraddr = (uint32_t)hcryp->Init.Header; |
bogdanm | 0:9b334a45a8ff | 1156 | uint32_t loopcounter = 0; |
bogdanm | 0:9b334a45a8ff | 1157 | uint32_t bufferidx = 0; |
bogdanm | 0:9b334a45a8ff | 1158 | uint8_t blockb0[16] = {0};/* Block B0 */ |
bogdanm | 0:9b334a45a8ff | 1159 | uint8_t ctr[16] = {0}; /* Counter */ |
bogdanm | 0:9b334a45a8ff | 1160 | uint32_t b0addr = (uint32_t)blockb0; |
bogdanm | 0:9b334a45a8ff | 1161 | |
bogdanm | 0:9b334a45a8ff | 1162 | /* Process Locked */ |
bogdanm | 0:9b334a45a8ff | 1163 | __HAL_LOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 1164 | |
bogdanm | 0:9b334a45a8ff | 1165 | /* Change the CRYP peripheral state */ |
bogdanm | 0:9b334a45a8ff | 1166 | hcryp->State = HAL_CRYP_STATE_BUSY; |
bogdanm | 0:9b334a45a8ff | 1167 | |
bogdanm | 0:9b334a45a8ff | 1168 | /* Check if initialization phase has already been performed */ |
bogdanm | 0:9b334a45a8ff | 1169 | if(hcryp->Phase == HAL_CRYP_PHASE_READY) |
bogdanm | 0:9b334a45a8ff | 1170 | { |
bogdanm | 0:9b334a45a8ff | 1171 | /************************ Formatting the header block *********************/ |
bogdanm | 0:9b334a45a8ff | 1172 | if(headersize != 0) |
bogdanm | 0:9b334a45a8ff | 1173 | { |
bogdanm | 0:9b334a45a8ff | 1174 | /* Check that the associated data (or header) length is lower than 2^16 - 2^8 = 65536 - 256 = 65280 */ |
bogdanm | 0:9b334a45a8ff | 1175 | if(headersize < 65280) |
bogdanm | 0:9b334a45a8ff | 1176 | { |
bogdanm | 0:9b334a45a8ff | 1177 | hcryp->Init.pScratch[bufferidx++] = (uint8_t) ((headersize >> 8) & 0xFF); |
bogdanm | 0:9b334a45a8ff | 1178 | hcryp->Init.pScratch[bufferidx++] = (uint8_t) ((headersize) & 0xFF); |
bogdanm | 0:9b334a45a8ff | 1179 | headersize += 2; |
bogdanm | 0:9b334a45a8ff | 1180 | } |
bogdanm | 0:9b334a45a8ff | 1181 | else |
bogdanm | 0:9b334a45a8ff | 1182 | { |
bogdanm | 0:9b334a45a8ff | 1183 | /* Header is encoded as 0xff || 0xfe || [headersize]32, i.e., six octets */ |
bogdanm | 0:9b334a45a8ff | 1184 | hcryp->Init.pScratch[bufferidx++] = 0xFF; |
bogdanm | 0:9b334a45a8ff | 1185 | hcryp->Init.pScratch[bufferidx++] = 0xFE; |
bogdanm | 0:9b334a45a8ff | 1186 | hcryp->Init.pScratch[bufferidx++] = headersize & 0xff000000; |
bogdanm | 0:9b334a45a8ff | 1187 | hcryp->Init.pScratch[bufferidx++] = headersize & 0x00ff0000; |
bogdanm | 0:9b334a45a8ff | 1188 | hcryp->Init.pScratch[bufferidx++] = headersize & 0x0000ff00; |
bogdanm | 0:9b334a45a8ff | 1189 | hcryp->Init.pScratch[bufferidx++] = headersize & 0x000000ff; |
bogdanm | 0:9b334a45a8ff | 1190 | headersize += 6; |
bogdanm | 0:9b334a45a8ff | 1191 | } |
bogdanm | 0:9b334a45a8ff | 1192 | /* Copy the header buffer in internal buffer "hcryp->Init.pScratch" */ |
bogdanm | 0:9b334a45a8ff | 1193 | for(loopcounter = 0; loopcounter < headersize; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 1194 | { |
bogdanm | 0:9b334a45a8ff | 1195 | hcryp->Init.pScratch[bufferidx++] = hcryp->Init.Header[loopcounter]; |
bogdanm | 0:9b334a45a8ff | 1196 | } |
bogdanm | 0:9b334a45a8ff | 1197 | /* Check if the header size is modulo 16 */ |
bogdanm | 0:9b334a45a8ff | 1198 | if ((headersize % 16) != 0) |
bogdanm | 0:9b334a45a8ff | 1199 | { |
bogdanm | 0:9b334a45a8ff | 1200 | /* Padd the header buffer with 0s till the hcryp->Init.pScratch length is modulo 16 */ |
bogdanm | 0:9b334a45a8ff | 1201 | for(loopcounter = headersize; loopcounter <= ((headersize/16) + 1) * 16; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 1202 | { |
bogdanm | 0:9b334a45a8ff | 1203 | hcryp->Init.pScratch[loopcounter] = 0; |
bogdanm | 0:9b334a45a8ff | 1204 | } |
bogdanm | 0:9b334a45a8ff | 1205 | /* Set the header size to modulo 16 */ |
bogdanm | 0:9b334a45a8ff | 1206 | headersize = ((headersize/16) + 1) * 16; |
bogdanm | 0:9b334a45a8ff | 1207 | } |
bogdanm | 0:9b334a45a8ff | 1208 | /* Set the pointer headeraddr to hcryp->Init.pScratch */ |
bogdanm | 0:9b334a45a8ff | 1209 | headeraddr = (uint32_t)hcryp->Init.pScratch; |
bogdanm | 0:9b334a45a8ff | 1210 | } |
bogdanm | 0:9b334a45a8ff | 1211 | /*********************** Formatting the block B0 **************************/ |
bogdanm | 0:9b334a45a8ff | 1212 | if(headersize != 0) |
bogdanm | 0:9b334a45a8ff | 1213 | { |
bogdanm | 0:9b334a45a8ff | 1214 | blockb0[0] = 0x40; |
bogdanm | 0:9b334a45a8ff | 1215 | } |
bogdanm | 0:9b334a45a8ff | 1216 | /* Flags byte */ |
bogdanm | 0:9b334a45a8ff | 1217 | /* blockb0[0] |= 0u | (((( (uint8_t) hcryp->Init.TagSize - 2) / 2) & 0x07 ) << 3 ) | ( ( (uint8_t) (15 - hcryp->Init.IVSize) - 1) & 0x07) */ |
bogdanm | 0:9b334a45a8ff | 1218 | blockb0[0] |= (uint8_t)((uint8_t)((uint8_t)(((uint8_t)(hcryp->Init.TagSize - (uint8_t)(2))) >> 1) & (uint8_t)0x07 ) << 3); |
bogdanm | 0:9b334a45a8ff | 1219 | blockb0[0] |= (uint8_t)((uint8_t)((uint8_t)((uint8_t)(15) - hcryp->Init.IVSize) - (uint8_t)1) & (uint8_t)0x07); |
bogdanm | 0:9b334a45a8ff | 1220 | |
bogdanm | 0:9b334a45a8ff | 1221 | for (loopcounter = 0; loopcounter < hcryp->Init.IVSize; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 1222 | { |
bogdanm | 0:9b334a45a8ff | 1223 | blockb0[loopcounter+1] = hcryp->Init.pInitVect[loopcounter]; |
bogdanm | 0:9b334a45a8ff | 1224 | } |
bogdanm | 0:9b334a45a8ff | 1225 | for ( ; loopcounter < 13; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 1226 | { |
bogdanm | 0:9b334a45a8ff | 1227 | blockb0[loopcounter+1] = 0; |
bogdanm | 0:9b334a45a8ff | 1228 | } |
bogdanm | 0:9b334a45a8ff | 1229 | |
bogdanm | 0:9b334a45a8ff | 1230 | blockb0[14] = (Size >> 8); |
bogdanm | 0:9b334a45a8ff | 1231 | blockb0[15] = (Size & 0xFF); |
bogdanm | 0:9b334a45a8ff | 1232 | |
bogdanm | 0:9b334a45a8ff | 1233 | /************************* Formatting the initial counter *****************/ |
bogdanm | 0:9b334a45a8ff | 1234 | /* Byte 0: |
bogdanm | 0:9b334a45a8ff | 1235 | Bits 7 and 6 are reserved and shall be set to 0 |
bogdanm | 0:9b334a45a8ff | 1236 | Bits 3, 4, and 5 shall also be set to 0, to ensure that all the counter |
bogdanm | 0:9b334a45a8ff | 1237 | blocks are distinct from B0 |
bogdanm | 0:9b334a45a8ff | 1238 | Bits 0, 1, and 2 contain the same encoding of q as in B0 |
bogdanm | 0:9b334a45a8ff | 1239 | */ |
bogdanm | 0:9b334a45a8ff | 1240 | ctr[0] = blockb0[0] & 0x07; |
bogdanm | 0:9b334a45a8ff | 1241 | /* byte 1 to NonceSize is the IV (Nonce) */ |
bogdanm | 0:9b334a45a8ff | 1242 | for(loopcounter = 1; loopcounter < hcryp->Init.IVSize + 1; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 1243 | { |
bogdanm | 0:9b334a45a8ff | 1244 | ctr[loopcounter] = blockb0[loopcounter]; |
bogdanm | 0:9b334a45a8ff | 1245 | } |
bogdanm | 0:9b334a45a8ff | 1246 | /* Set the LSB to 1 */ |
bogdanm | 0:9b334a45a8ff | 1247 | ctr[15] |= 0x01; |
bogdanm | 0:9b334a45a8ff | 1248 | |
bogdanm | 0:9b334a45a8ff | 1249 | /* Set the key */ |
bogdanm | 0:9b334a45a8ff | 1250 | CRYPEx_GCMCCM_SetKey(hcryp, hcryp->Init.pKey, hcryp->Init.KeySize); |
bogdanm | 0:9b334a45a8ff | 1251 | |
bogdanm | 0:9b334a45a8ff | 1252 | /* Set the CRYP peripheral in AES CCM mode */ |
bogdanm | 0:9b334a45a8ff | 1253 | __HAL_CRYP_SET_MODE(hcryp, CRYP_CR_ALGOMODE_AES_CCM_DECRYPT); |
bogdanm | 0:9b334a45a8ff | 1254 | |
bogdanm | 0:9b334a45a8ff | 1255 | /* Set the Initialization Vector */ |
bogdanm | 0:9b334a45a8ff | 1256 | CRYPEx_GCMCCM_SetInitVector(hcryp, ctr); |
bogdanm | 0:9b334a45a8ff | 1257 | |
bogdanm | 0:9b334a45a8ff | 1258 | /* Select init phase */ |
bogdanm | 0:9b334a45a8ff | 1259 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_INIT); |
bogdanm | 0:9b334a45a8ff | 1260 | |
bogdanm | 0:9b334a45a8ff | 1261 | b0addr = (uint32_t)blockb0; |
bogdanm | 0:9b334a45a8ff | 1262 | /* Write the blockb0 block in the IN FIFO */ |
bogdanm | 0:9b334a45a8ff | 1263 | hcryp->Instance->DR = *(uint32_t*)(b0addr); |
bogdanm | 0:9b334a45a8ff | 1264 | b0addr+=4; |
bogdanm | 0:9b334a45a8ff | 1265 | hcryp->Instance->DR = *(uint32_t*)(b0addr); |
bogdanm | 0:9b334a45a8ff | 1266 | b0addr+=4; |
bogdanm | 0:9b334a45a8ff | 1267 | hcryp->Instance->DR = *(uint32_t*)(b0addr); |
bogdanm | 0:9b334a45a8ff | 1268 | b0addr+=4; |
bogdanm | 0:9b334a45a8ff | 1269 | hcryp->Instance->DR = *(uint32_t*)(b0addr); |
bogdanm | 0:9b334a45a8ff | 1270 | |
bogdanm | 0:9b334a45a8ff | 1271 | /* Enable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 1272 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 1273 | |
bogdanm | 0:9b334a45a8ff | 1274 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 1275 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 1276 | |
bogdanm | 0:9b334a45a8ff | 1277 | while((CRYP->CR & CRYP_CR_CRYPEN) == CRYP_CR_CRYPEN) |
bogdanm | 0:9b334a45a8ff | 1278 | { |
bogdanm | 0:9b334a45a8ff | 1279 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 1280 | if(Timeout != HAL_MAX_DELAY) |
bogdanm | 0:9b334a45a8ff | 1281 | { |
bogdanm | 0:9b334a45a8ff | 1282 | if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) |
bogdanm | 0:9b334a45a8ff | 1283 | { |
bogdanm | 0:9b334a45a8ff | 1284 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 1285 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 1286 | |
bogdanm | 0:9b334a45a8ff | 1287 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 1288 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 1289 | |
bogdanm | 0:9b334a45a8ff | 1290 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 1291 | } |
bogdanm | 0:9b334a45a8ff | 1292 | } |
bogdanm | 0:9b334a45a8ff | 1293 | } |
bogdanm | 0:9b334a45a8ff | 1294 | /***************************** Header phase *******************************/ |
bogdanm | 0:9b334a45a8ff | 1295 | if(headersize != 0) |
bogdanm | 0:9b334a45a8ff | 1296 | { |
bogdanm | 0:9b334a45a8ff | 1297 | /* Select header phase */ |
bogdanm | 0:9b334a45a8ff | 1298 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_HEADER); |
bogdanm | 0:9b334a45a8ff | 1299 | |
bogdanm | 0:9b334a45a8ff | 1300 | /* Enable Crypto processor */ |
bogdanm | 0:9b334a45a8ff | 1301 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 1302 | |
bogdanm | 0:9b334a45a8ff | 1303 | for(loopcounter = 0; (loopcounter < headersize); loopcounter+=16) |
bogdanm | 0:9b334a45a8ff | 1304 | { |
bogdanm | 0:9b334a45a8ff | 1305 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 1306 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 1307 | |
bogdanm | 0:9b334a45a8ff | 1308 | while(HAL_IS_BIT_CLR(hcryp->Instance->SR, CRYP_FLAG_IFEM)) |
bogdanm | 0:9b334a45a8ff | 1309 | { |
bogdanm | 0:9b334a45a8ff | 1310 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 1311 | if(Timeout != HAL_MAX_DELAY) |
bogdanm | 0:9b334a45a8ff | 1312 | { |
bogdanm | 0:9b334a45a8ff | 1313 | if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) |
bogdanm | 0:9b334a45a8ff | 1314 | { |
bogdanm | 0:9b334a45a8ff | 1315 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 1316 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 1317 | |
bogdanm | 0:9b334a45a8ff | 1318 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 1319 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 1320 | |
bogdanm | 0:9b334a45a8ff | 1321 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 1322 | } |
bogdanm | 0:9b334a45a8ff | 1323 | } |
bogdanm | 0:9b334a45a8ff | 1324 | } |
bogdanm | 0:9b334a45a8ff | 1325 | /* Write the header block in the IN FIFO */ |
bogdanm | 0:9b334a45a8ff | 1326 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 1327 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 1328 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 1329 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 1330 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 1331 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 1332 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 1333 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 1334 | } |
bogdanm | 0:9b334a45a8ff | 1335 | |
bogdanm | 0:9b334a45a8ff | 1336 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 1337 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 1338 | |
bogdanm | 0:9b334a45a8ff | 1339 | while((hcryp->Instance->SR & CRYP_FLAG_BUSY) == CRYP_FLAG_BUSY) |
bogdanm | 0:9b334a45a8ff | 1340 | { |
bogdanm | 0:9b334a45a8ff | 1341 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 1342 | if(Timeout != HAL_MAX_DELAY) |
bogdanm | 0:9b334a45a8ff | 1343 | { |
bogdanm | 0:9b334a45a8ff | 1344 | if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) |
bogdanm | 0:9b334a45a8ff | 1345 | { |
bogdanm | 0:9b334a45a8ff | 1346 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 1347 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 1348 | |
bogdanm | 0:9b334a45a8ff | 1349 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 1350 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 1351 | |
bogdanm | 0:9b334a45a8ff | 1352 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 1353 | } |
bogdanm | 0:9b334a45a8ff | 1354 | } |
bogdanm | 0:9b334a45a8ff | 1355 | } |
bogdanm | 0:9b334a45a8ff | 1356 | } |
bogdanm | 0:9b334a45a8ff | 1357 | /* Save formatted counter into the scratch buffer pScratch */ |
bogdanm | 0:9b334a45a8ff | 1358 | for(loopcounter = 0; (loopcounter < 16); loopcounter++) |
bogdanm | 0:9b334a45a8ff | 1359 | { |
bogdanm | 0:9b334a45a8ff | 1360 | hcryp->Init.pScratch[loopcounter] = ctr[loopcounter]; |
bogdanm | 0:9b334a45a8ff | 1361 | } |
bogdanm | 0:9b334a45a8ff | 1362 | /* Reset bit 0 */ |
bogdanm | 0:9b334a45a8ff | 1363 | hcryp->Init.pScratch[15] &= 0xfe; |
bogdanm | 0:9b334a45a8ff | 1364 | /* Select payload phase once the header phase is performed */ |
bogdanm | 0:9b334a45a8ff | 1365 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_PAYLOAD); |
bogdanm | 0:9b334a45a8ff | 1366 | |
bogdanm | 0:9b334a45a8ff | 1367 | /* Flush FIFO */ |
bogdanm | 0:9b334a45a8ff | 1368 | __HAL_CRYP_FIFO_FLUSH(hcryp); |
bogdanm | 0:9b334a45a8ff | 1369 | |
bogdanm | 0:9b334a45a8ff | 1370 | /* Enable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 1371 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 1372 | |
bogdanm | 0:9b334a45a8ff | 1373 | /* Set the phase */ |
bogdanm | 0:9b334a45a8ff | 1374 | hcryp->Phase = HAL_CRYP_PHASE_PROCESS; |
bogdanm | 0:9b334a45a8ff | 1375 | } |
bogdanm | 0:9b334a45a8ff | 1376 | |
bogdanm | 0:9b334a45a8ff | 1377 | /* Write Plain Data and Get Cypher Data */ |
bogdanm | 0:9b334a45a8ff | 1378 | if(CRYPEx_GCMCCM_ProcessData(hcryp, pCypherData, Size, pPlainData, Timeout) != HAL_OK) |
bogdanm | 0:9b334a45a8ff | 1379 | { |
bogdanm | 0:9b334a45a8ff | 1380 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 1381 | } |
bogdanm | 0:9b334a45a8ff | 1382 | |
bogdanm | 0:9b334a45a8ff | 1383 | /* Change the CRYP peripheral state */ |
bogdanm | 0:9b334a45a8ff | 1384 | hcryp->State = HAL_CRYP_STATE_READY; |
bogdanm | 0:9b334a45a8ff | 1385 | |
bogdanm | 0:9b334a45a8ff | 1386 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 1387 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 1388 | |
bogdanm | 0:9b334a45a8ff | 1389 | /* Return function status */ |
bogdanm | 0:9b334a45a8ff | 1390 | return HAL_OK; |
bogdanm | 0:9b334a45a8ff | 1391 | } |
bogdanm | 0:9b334a45a8ff | 1392 | |
bogdanm | 0:9b334a45a8ff | 1393 | /** |
bogdanm | 0:9b334a45a8ff | 1394 | * @brief Initializes the CRYP peripheral in AES GCM encryption mode using IT. |
bogdanm | 0:9b334a45a8ff | 1395 | * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 1396 | * the configuration information for CRYP module |
bogdanm | 0:9b334a45a8ff | 1397 | * @param pPlainData: Pointer to the plaintext buffer |
bogdanm | 0:9b334a45a8ff | 1398 | * @param Size: Length of the plaintext buffer, must be a multiple of 16 |
bogdanm | 0:9b334a45a8ff | 1399 | * @param pCypherData: Pointer to the cyphertext buffer |
bogdanm | 0:9b334a45a8ff | 1400 | * @retval HAL status |
bogdanm | 0:9b334a45a8ff | 1401 | */ |
bogdanm | 0:9b334a45a8ff | 1402 | HAL_StatusTypeDef HAL_CRYPEx_AESGCM_Encrypt_IT(CRYP_HandleTypeDef *hcryp, uint8_t *pPlainData, uint16_t Size, uint8_t *pCypherData) |
bogdanm | 0:9b334a45a8ff | 1403 | { |
bogdanm | 0:9b334a45a8ff | 1404 | uint32_t tickstart = 0; |
bogdanm | 0:9b334a45a8ff | 1405 | uint32_t inputaddr; |
bogdanm | 0:9b334a45a8ff | 1406 | uint32_t outputaddr; |
bogdanm | 0:9b334a45a8ff | 1407 | |
bogdanm | 0:9b334a45a8ff | 1408 | if(hcryp->State == HAL_CRYP_STATE_READY) |
bogdanm | 0:9b334a45a8ff | 1409 | { |
bogdanm | 0:9b334a45a8ff | 1410 | /* Process Locked */ |
bogdanm | 0:9b334a45a8ff | 1411 | __HAL_LOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 1412 | |
bogdanm | 0:9b334a45a8ff | 1413 | /* Get the buffer addresses and sizes */ |
bogdanm | 0:9b334a45a8ff | 1414 | hcryp->CrypInCount = Size; |
bogdanm | 0:9b334a45a8ff | 1415 | hcryp->pCrypInBuffPtr = pPlainData; |
bogdanm | 0:9b334a45a8ff | 1416 | hcryp->pCrypOutBuffPtr = pCypherData; |
bogdanm | 0:9b334a45a8ff | 1417 | hcryp->CrypOutCount = Size; |
bogdanm | 0:9b334a45a8ff | 1418 | |
bogdanm | 0:9b334a45a8ff | 1419 | /* Change the CRYP peripheral state */ |
bogdanm | 0:9b334a45a8ff | 1420 | hcryp->State = HAL_CRYP_STATE_BUSY; |
bogdanm | 0:9b334a45a8ff | 1421 | |
bogdanm | 0:9b334a45a8ff | 1422 | /* Check if initialization phase has already been performed */ |
bogdanm | 0:9b334a45a8ff | 1423 | if(hcryp->Phase == HAL_CRYP_PHASE_READY) |
bogdanm | 0:9b334a45a8ff | 1424 | { |
bogdanm | 0:9b334a45a8ff | 1425 | /* Set the key */ |
bogdanm | 0:9b334a45a8ff | 1426 | CRYPEx_GCMCCM_SetKey(hcryp, hcryp->Init.pKey, hcryp->Init.KeySize); |
bogdanm | 0:9b334a45a8ff | 1427 | |
bogdanm | 0:9b334a45a8ff | 1428 | /* Set the CRYP peripheral in AES GCM mode */ |
bogdanm | 0:9b334a45a8ff | 1429 | __HAL_CRYP_SET_MODE(hcryp, CRYP_CR_ALGOMODE_AES_GCM_ENCRYPT); |
bogdanm | 0:9b334a45a8ff | 1430 | |
bogdanm | 0:9b334a45a8ff | 1431 | /* Set the Initialization Vector */ |
bogdanm | 0:9b334a45a8ff | 1432 | CRYPEx_GCMCCM_SetInitVector(hcryp, hcryp->Init.pInitVect); |
bogdanm | 0:9b334a45a8ff | 1433 | |
bogdanm | 0:9b334a45a8ff | 1434 | /* Flush FIFO */ |
bogdanm | 0:9b334a45a8ff | 1435 | __HAL_CRYP_FIFO_FLUSH(hcryp); |
bogdanm | 0:9b334a45a8ff | 1436 | |
bogdanm | 0:9b334a45a8ff | 1437 | /* Enable CRYP to start the init phase */ |
bogdanm | 0:9b334a45a8ff | 1438 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 1439 | |
bogdanm | 0:9b334a45a8ff | 1440 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 1441 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 1442 | |
bogdanm | 0:9b334a45a8ff | 1443 | while((CRYP->CR & CRYP_CR_CRYPEN) == CRYP_CR_CRYPEN) |
bogdanm | 0:9b334a45a8ff | 1444 | { |
bogdanm | 0:9b334a45a8ff | 1445 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 1446 | |
bogdanm | 0:9b334a45a8ff | 1447 | if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) |
bogdanm | 0:9b334a45a8ff | 1448 | { |
bogdanm | 0:9b334a45a8ff | 1449 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 1450 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 1451 | |
bogdanm | 0:9b334a45a8ff | 1452 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 1453 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 1454 | |
bogdanm | 0:9b334a45a8ff | 1455 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 1456 | |
bogdanm | 0:9b334a45a8ff | 1457 | } |
bogdanm | 0:9b334a45a8ff | 1458 | } |
bogdanm | 0:9b334a45a8ff | 1459 | |
bogdanm | 0:9b334a45a8ff | 1460 | /* Set the header phase */ |
bogdanm | 0:9b334a45a8ff | 1461 | if(CRYPEx_GCMCCM_SetHeaderPhase(hcryp, hcryp->Init.Header, hcryp->Init.HeaderSize, 1) != HAL_OK) |
bogdanm | 0:9b334a45a8ff | 1462 | { |
bogdanm | 0:9b334a45a8ff | 1463 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 1464 | } |
bogdanm | 0:9b334a45a8ff | 1465 | /* Disable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 1466 | __HAL_CRYP_DISABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 1467 | |
bogdanm | 0:9b334a45a8ff | 1468 | /* Select payload phase once the header phase is performed */ |
bogdanm | 0:9b334a45a8ff | 1469 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_PAYLOAD); |
bogdanm | 0:9b334a45a8ff | 1470 | |
bogdanm | 0:9b334a45a8ff | 1471 | /* Flush FIFO */ |
bogdanm | 0:9b334a45a8ff | 1472 | __HAL_CRYP_FIFO_FLUSH(hcryp); |
bogdanm | 0:9b334a45a8ff | 1473 | |
bogdanm | 0:9b334a45a8ff | 1474 | /* Set the phase */ |
bogdanm | 0:9b334a45a8ff | 1475 | hcryp->Phase = HAL_CRYP_PHASE_PROCESS; |
bogdanm | 0:9b334a45a8ff | 1476 | } |
bogdanm | 0:9b334a45a8ff | 1477 | |
bogdanm | 0:9b334a45a8ff | 1478 | if(Size != 0) |
bogdanm | 0:9b334a45a8ff | 1479 | { |
bogdanm | 0:9b334a45a8ff | 1480 | /* Enable Interrupts */ |
bogdanm | 0:9b334a45a8ff | 1481 | __HAL_CRYP_ENABLE_IT(hcryp, CRYP_IT_INI | CRYP_IT_OUTI); |
bogdanm | 0:9b334a45a8ff | 1482 | /* Enable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 1483 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 1484 | } |
bogdanm | 0:9b334a45a8ff | 1485 | else |
bogdanm | 0:9b334a45a8ff | 1486 | { |
bogdanm | 0:9b334a45a8ff | 1487 | /* Process Locked */ |
bogdanm | 0:9b334a45a8ff | 1488 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 1489 | /* Change the CRYP state and phase */ |
bogdanm | 0:9b334a45a8ff | 1490 | hcryp->State = HAL_CRYP_STATE_READY; |
bogdanm | 0:9b334a45a8ff | 1491 | } |
bogdanm | 0:9b334a45a8ff | 1492 | /* Return function status */ |
bogdanm | 0:9b334a45a8ff | 1493 | return HAL_OK; |
bogdanm | 0:9b334a45a8ff | 1494 | } |
bogdanm | 0:9b334a45a8ff | 1495 | else if (__HAL_CRYP_GET_IT(hcryp, CRYP_IT_INI)) |
bogdanm | 0:9b334a45a8ff | 1496 | { |
bogdanm | 0:9b334a45a8ff | 1497 | inputaddr = (uint32_t)hcryp->pCrypInBuffPtr; |
bogdanm | 0:9b334a45a8ff | 1498 | /* Write the Input block in the IN FIFO */ |
bogdanm | 0:9b334a45a8ff | 1499 | hcryp->Instance->DR = *(uint32_t*)(inputaddr); |
bogdanm | 0:9b334a45a8ff | 1500 | inputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 1501 | hcryp->Instance->DR = *(uint32_t*)(inputaddr); |
bogdanm | 0:9b334a45a8ff | 1502 | inputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 1503 | hcryp->Instance->DR = *(uint32_t*)(inputaddr); |
bogdanm | 0:9b334a45a8ff | 1504 | inputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 1505 | hcryp->Instance->DR = *(uint32_t*)(inputaddr); |
bogdanm | 0:9b334a45a8ff | 1506 | hcryp->pCrypInBuffPtr += 16; |
bogdanm | 0:9b334a45a8ff | 1507 | hcryp->CrypInCount -= 16; |
bogdanm | 0:9b334a45a8ff | 1508 | if(hcryp->CrypInCount == 0) |
bogdanm | 0:9b334a45a8ff | 1509 | { |
bogdanm | 0:9b334a45a8ff | 1510 | __HAL_CRYP_DISABLE_IT(hcryp, CRYP_IT_INI); |
bogdanm | 0:9b334a45a8ff | 1511 | /* Call the Input data transfer complete callback */ |
bogdanm | 0:9b334a45a8ff | 1512 | HAL_CRYP_InCpltCallback(hcryp); |
bogdanm | 0:9b334a45a8ff | 1513 | } |
bogdanm | 0:9b334a45a8ff | 1514 | } |
bogdanm | 0:9b334a45a8ff | 1515 | else if (__HAL_CRYP_GET_IT(hcryp, CRYP_IT_OUTI)) |
bogdanm | 0:9b334a45a8ff | 1516 | { |
bogdanm | 0:9b334a45a8ff | 1517 | outputaddr = (uint32_t)hcryp->pCrypOutBuffPtr; |
bogdanm | 0:9b334a45a8ff | 1518 | /* Read the Output block from the Output FIFO */ |
bogdanm | 0:9b334a45a8ff | 1519 | *(uint32_t*)(outputaddr) = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 1520 | outputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 1521 | *(uint32_t*)(outputaddr) = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 1522 | outputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 1523 | *(uint32_t*)(outputaddr) = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 1524 | outputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 1525 | *(uint32_t*)(outputaddr) = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 1526 | hcryp->pCrypOutBuffPtr += 16; |
bogdanm | 0:9b334a45a8ff | 1527 | hcryp->CrypOutCount -= 16; |
bogdanm | 0:9b334a45a8ff | 1528 | if(hcryp->CrypOutCount == 0) |
bogdanm | 0:9b334a45a8ff | 1529 | { |
bogdanm | 0:9b334a45a8ff | 1530 | __HAL_CRYP_DISABLE_IT(hcryp, CRYP_IT_OUTI); |
bogdanm | 0:9b334a45a8ff | 1531 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 1532 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 1533 | /* Change the CRYP peripheral state */ |
bogdanm | 0:9b334a45a8ff | 1534 | hcryp->State = HAL_CRYP_STATE_READY; |
bogdanm | 0:9b334a45a8ff | 1535 | /* Call Input transfer complete callback */ |
bogdanm | 0:9b334a45a8ff | 1536 | HAL_CRYP_OutCpltCallback(hcryp); |
bogdanm | 0:9b334a45a8ff | 1537 | } |
bogdanm | 0:9b334a45a8ff | 1538 | } |
bogdanm | 0:9b334a45a8ff | 1539 | |
bogdanm | 0:9b334a45a8ff | 1540 | /* Return function status */ |
bogdanm | 0:9b334a45a8ff | 1541 | return HAL_OK; |
bogdanm | 0:9b334a45a8ff | 1542 | } |
bogdanm | 0:9b334a45a8ff | 1543 | |
bogdanm | 0:9b334a45a8ff | 1544 | /** |
bogdanm | 0:9b334a45a8ff | 1545 | * @brief Initializes the CRYP peripheral in AES CCM encryption mode using interrupt. |
bogdanm | 0:9b334a45a8ff | 1546 | * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 1547 | * the configuration information for CRYP module |
bogdanm | 0:9b334a45a8ff | 1548 | * @param pPlainData: Pointer to the plaintext buffer |
bogdanm | 0:9b334a45a8ff | 1549 | * @param Size: Length of the plaintext buffer, must be a multiple of 16 |
bogdanm | 0:9b334a45a8ff | 1550 | * @param pCypherData: Pointer to the cyphertext buffer |
bogdanm | 0:9b334a45a8ff | 1551 | * @retval HAL status |
bogdanm | 0:9b334a45a8ff | 1552 | */ |
bogdanm | 0:9b334a45a8ff | 1553 | HAL_StatusTypeDef HAL_CRYPEx_AESCCM_Encrypt_IT(CRYP_HandleTypeDef *hcryp, uint8_t *pPlainData, uint16_t Size, uint8_t *pCypherData) |
bogdanm | 0:9b334a45a8ff | 1554 | { |
bogdanm | 0:9b334a45a8ff | 1555 | uint32_t tickstart = 0; |
bogdanm | 0:9b334a45a8ff | 1556 | uint32_t inputaddr; |
bogdanm | 0:9b334a45a8ff | 1557 | uint32_t outputaddr; |
bogdanm | 0:9b334a45a8ff | 1558 | |
bogdanm | 0:9b334a45a8ff | 1559 | uint32_t headersize = hcryp->Init.HeaderSize; |
bogdanm | 0:9b334a45a8ff | 1560 | uint32_t headeraddr = (uint32_t)hcryp->Init.Header; |
bogdanm | 0:9b334a45a8ff | 1561 | uint32_t loopcounter = 0; |
bogdanm | 0:9b334a45a8ff | 1562 | uint32_t bufferidx = 0; |
bogdanm | 0:9b334a45a8ff | 1563 | uint8_t blockb0[16] = {0};/* Block B0 */ |
bogdanm | 0:9b334a45a8ff | 1564 | uint8_t ctr[16] = {0}; /* Counter */ |
bogdanm | 0:9b334a45a8ff | 1565 | uint32_t b0addr = (uint32_t)blockb0; |
bogdanm | 0:9b334a45a8ff | 1566 | |
bogdanm | 0:9b334a45a8ff | 1567 | if(hcryp->State == HAL_CRYP_STATE_READY) |
bogdanm | 0:9b334a45a8ff | 1568 | { |
bogdanm | 0:9b334a45a8ff | 1569 | /* Process Locked */ |
bogdanm | 0:9b334a45a8ff | 1570 | __HAL_LOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 1571 | |
bogdanm | 0:9b334a45a8ff | 1572 | hcryp->CrypInCount = Size; |
bogdanm | 0:9b334a45a8ff | 1573 | hcryp->pCrypInBuffPtr = pPlainData; |
bogdanm | 0:9b334a45a8ff | 1574 | hcryp->pCrypOutBuffPtr = pCypherData; |
bogdanm | 0:9b334a45a8ff | 1575 | hcryp->CrypOutCount = Size; |
bogdanm | 0:9b334a45a8ff | 1576 | |
bogdanm | 0:9b334a45a8ff | 1577 | /* Change the CRYP peripheral state */ |
bogdanm | 0:9b334a45a8ff | 1578 | hcryp->State = HAL_CRYP_STATE_BUSY; |
bogdanm | 0:9b334a45a8ff | 1579 | |
bogdanm | 0:9b334a45a8ff | 1580 | /* Check if initialization phase has already been performed */ |
bogdanm | 0:9b334a45a8ff | 1581 | if(hcryp->Phase == HAL_CRYP_PHASE_READY) |
bogdanm | 0:9b334a45a8ff | 1582 | { |
bogdanm | 0:9b334a45a8ff | 1583 | /************************ Formatting the header block *******************/ |
bogdanm | 0:9b334a45a8ff | 1584 | if(headersize != 0) |
bogdanm | 0:9b334a45a8ff | 1585 | { |
bogdanm | 0:9b334a45a8ff | 1586 | /* Check that the associated data (or header) length is lower than 2^16 - 2^8 = 65536 - 256 = 65280 */ |
bogdanm | 0:9b334a45a8ff | 1587 | if(headersize < 65280) |
bogdanm | 0:9b334a45a8ff | 1588 | { |
bogdanm | 0:9b334a45a8ff | 1589 | hcryp->Init.pScratch[bufferidx++] = (uint8_t) ((headersize >> 8) & 0xFF); |
bogdanm | 0:9b334a45a8ff | 1590 | hcryp->Init.pScratch[bufferidx++] = (uint8_t) ((headersize) & 0xFF); |
bogdanm | 0:9b334a45a8ff | 1591 | headersize += 2; |
bogdanm | 0:9b334a45a8ff | 1592 | } |
bogdanm | 0:9b334a45a8ff | 1593 | else |
bogdanm | 0:9b334a45a8ff | 1594 | { |
bogdanm | 0:9b334a45a8ff | 1595 | /* Header is encoded as 0xff || 0xfe || [headersize]32, i.e., six octets */ |
bogdanm | 0:9b334a45a8ff | 1596 | hcryp->Init.pScratch[bufferidx++] = 0xFF; |
bogdanm | 0:9b334a45a8ff | 1597 | hcryp->Init.pScratch[bufferidx++] = 0xFE; |
bogdanm | 0:9b334a45a8ff | 1598 | hcryp->Init.pScratch[bufferidx++] = headersize & 0xff000000; |
bogdanm | 0:9b334a45a8ff | 1599 | hcryp->Init.pScratch[bufferidx++] = headersize & 0x00ff0000; |
bogdanm | 0:9b334a45a8ff | 1600 | hcryp->Init.pScratch[bufferidx++] = headersize & 0x0000ff00; |
bogdanm | 0:9b334a45a8ff | 1601 | hcryp->Init.pScratch[bufferidx++] = headersize & 0x000000ff; |
bogdanm | 0:9b334a45a8ff | 1602 | headersize += 6; |
bogdanm | 0:9b334a45a8ff | 1603 | } |
bogdanm | 0:9b334a45a8ff | 1604 | /* Copy the header buffer in internal buffer "hcryp->Init.pScratch" */ |
bogdanm | 0:9b334a45a8ff | 1605 | for(loopcounter = 0; loopcounter < headersize; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 1606 | { |
bogdanm | 0:9b334a45a8ff | 1607 | hcryp->Init.pScratch[bufferidx++] = hcryp->Init.Header[loopcounter]; |
bogdanm | 0:9b334a45a8ff | 1608 | } |
bogdanm | 0:9b334a45a8ff | 1609 | /* Check if the header size is modulo 16 */ |
bogdanm | 0:9b334a45a8ff | 1610 | if ((headersize % 16) != 0) |
bogdanm | 0:9b334a45a8ff | 1611 | { |
bogdanm | 0:9b334a45a8ff | 1612 | /* Padd the header buffer with 0s till the hcryp->Init.pScratch length is modulo 16 */ |
bogdanm | 0:9b334a45a8ff | 1613 | for(loopcounter = headersize; loopcounter <= ((headersize/16) + 1) * 16; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 1614 | { |
bogdanm | 0:9b334a45a8ff | 1615 | hcryp->Init.pScratch[loopcounter] = 0; |
bogdanm | 0:9b334a45a8ff | 1616 | } |
bogdanm | 0:9b334a45a8ff | 1617 | /* Set the header size to modulo 16 */ |
bogdanm | 0:9b334a45a8ff | 1618 | headersize = ((headersize/16) + 1) * 16; |
bogdanm | 0:9b334a45a8ff | 1619 | } |
bogdanm | 0:9b334a45a8ff | 1620 | /* Set the pointer headeraddr to hcryp->Init.pScratch */ |
bogdanm | 0:9b334a45a8ff | 1621 | headeraddr = (uint32_t)hcryp->Init.pScratch; |
bogdanm | 0:9b334a45a8ff | 1622 | } |
bogdanm | 0:9b334a45a8ff | 1623 | /*********************** Formatting the block B0 ************************/ |
bogdanm | 0:9b334a45a8ff | 1624 | if(headersize != 0) |
bogdanm | 0:9b334a45a8ff | 1625 | { |
bogdanm | 0:9b334a45a8ff | 1626 | blockb0[0] = 0x40; |
bogdanm | 0:9b334a45a8ff | 1627 | } |
bogdanm | 0:9b334a45a8ff | 1628 | /* Flags byte */ |
bogdanm | 0:9b334a45a8ff | 1629 | /* blockb0[0] |= 0u | (((( (uint8_t) hcryp->Init.TagSize - 2) / 2) & 0x07 ) << 3 ) | ( ( (uint8_t) (15 - hcryp->Init.IVSize) - 1) & 0x07) */ |
bogdanm | 0:9b334a45a8ff | 1630 | blockb0[0] |= (uint8_t)((uint8_t)((uint8_t)(((uint8_t)(hcryp->Init.TagSize - (uint8_t)(2))) >> 1) & (uint8_t)0x07 ) << 3); |
bogdanm | 0:9b334a45a8ff | 1631 | blockb0[0] |= (uint8_t)((uint8_t)((uint8_t)((uint8_t)(15) - hcryp->Init.IVSize) - (uint8_t)1) & (uint8_t)0x07); |
bogdanm | 0:9b334a45a8ff | 1632 | |
bogdanm | 0:9b334a45a8ff | 1633 | for (loopcounter = 0; loopcounter < hcryp->Init.IVSize; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 1634 | { |
bogdanm | 0:9b334a45a8ff | 1635 | blockb0[loopcounter+1] = hcryp->Init.pInitVect[loopcounter]; |
bogdanm | 0:9b334a45a8ff | 1636 | } |
bogdanm | 0:9b334a45a8ff | 1637 | for ( ; loopcounter < 13; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 1638 | { |
bogdanm | 0:9b334a45a8ff | 1639 | blockb0[loopcounter+1] = 0; |
bogdanm | 0:9b334a45a8ff | 1640 | } |
bogdanm | 0:9b334a45a8ff | 1641 | |
bogdanm | 0:9b334a45a8ff | 1642 | blockb0[14] = (Size >> 8); |
bogdanm | 0:9b334a45a8ff | 1643 | blockb0[15] = (Size & 0xFF); |
bogdanm | 0:9b334a45a8ff | 1644 | |
bogdanm | 0:9b334a45a8ff | 1645 | /************************* Formatting the initial counter ***************/ |
bogdanm | 0:9b334a45a8ff | 1646 | /* Byte 0: |
bogdanm | 0:9b334a45a8ff | 1647 | Bits 7 and 6 are reserved and shall be set to 0 |
bogdanm | 0:9b334a45a8ff | 1648 | Bits 3, 4, and 5 shall also be set to 0, to ensure that all the counter |
bogdanm | 0:9b334a45a8ff | 1649 | blocks are distinct from B0 |
bogdanm | 0:9b334a45a8ff | 1650 | Bits 0, 1, and 2 contain the same encoding of q as in B0 |
bogdanm | 0:9b334a45a8ff | 1651 | */ |
bogdanm | 0:9b334a45a8ff | 1652 | ctr[0] = blockb0[0] & 0x07; |
bogdanm | 0:9b334a45a8ff | 1653 | /* byte 1 to NonceSize is the IV (Nonce) */ |
bogdanm | 0:9b334a45a8ff | 1654 | for(loopcounter = 1; loopcounter < hcryp->Init.IVSize + 1; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 1655 | { |
bogdanm | 0:9b334a45a8ff | 1656 | ctr[loopcounter] = blockb0[loopcounter]; |
bogdanm | 0:9b334a45a8ff | 1657 | } |
bogdanm | 0:9b334a45a8ff | 1658 | /* Set the LSB to 1 */ |
bogdanm | 0:9b334a45a8ff | 1659 | ctr[15] |= 0x01; |
bogdanm | 0:9b334a45a8ff | 1660 | |
bogdanm | 0:9b334a45a8ff | 1661 | /* Set the key */ |
bogdanm | 0:9b334a45a8ff | 1662 | CRYPEx_GCMCCM_SetKey(hcryp, hcryp->Init.pKey, hcryp->Init.KeySize); |
bogdanm | 0:9b334a45a8ff | 1663 | |
bogdanm | 0:9b334a45a8ff | 1664 | /* Set the CRYP peripheral in AES CCM mode */ |
bogdanm | 0:9b334a45a8ff | 1665 | __HAL_CRYP_SET_MODE(hcryp, CRYP_CR_ALGOMODE_AES_CCM_ENCRYPT); |
bogdanm | 0:9b334a45a8ff | 1666 | |
bogdanm | 0:9b334a45a8ff | 1667 | /* Set the Initialization Vector */ |
bogdanm | 0:9b334a45a8ff | 1668 | CRYPEx_GCMCCM_SetInitVector(hcryp, ctr); |
bogdanm | 0:9b334a45a8ff | 1669 | |
bogdanm | 0:9b334a45a8ff | 1670 | /* Select init phase */ |
bogdanm | 0:9b334a45a8ff | 1671 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_INIT); |
bogdanm | 0:9b334a45a8ff | 1672 | |
bogdanm | 0:9b334a45a8ff | 1673 | b0addr = (uint32_t)blockb0; |
bogdanm | 0:9b334a45a8ff | 1674 | /* Write the blockb0 block in the IN FIFO */ |
bogdanm | 0:9b334a45a8ff | 1675 | hcryp->Instance->DR = *(uint32_t*)(b0addr); |
bogdanm | 0:9b334a45a8ff | 1676 | b0addr+=4; |
bogdanm | 0:9b334a45a8ff | 1677 | hcryp->Instance->DR = *(uint32_t*)(b0addr); |
bogdanm | 0:9b334a45a8ff | 1678 | b0addr+=4; |
bogdanm | 0:9b334a45a8ff | 1679 | hcryp->Instance->DR = *(uint32_t*)(b0addr); |
bogdanm | 0:9b334a45a8ff | 1680 | b0addr+=4; |
bogdanm | 0:9b334a45a8ff | 1681 | hcryp->Instance->DR = *(uint32_t*)(b0addr); |
bogdanm | 0:9b334a45a8ff | 1682 | |
bogdanm | 0:9b334a45a8ff | 1683 | /* Enable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 1684 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 1685 | |
bogdanm | 0:9b334a45a8ff | 1686 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 1687 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 1688 | |
bogdanm | 0:9b334a45a8ff | 1689 | while((CRYP->CR & CRYP_CR_CRYPEN) == CRYP_CR_CRYPEN) |
bogdanm | 0:9b334a45a8ff | 1690 | { |
bogdanm | 0:9b334a45a8ff | 1691 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 1692 | if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) |
bogdanm | 0:9b334a45a8ff | 1693 | { |
bogdanm | 0:9b334a45a8ff | 1694 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 1695 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 1696 | |
bogdanm | 0:9b334a45a8ff | 1697 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 1698 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 1699 | |
bogdanm | 0:9b334a45a8ff | 1700 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 1701 | } |
bogdanm | 0:9b334a45a8ff | 1702 | } |
bogdanm | 0:9b334a45a8ff | 1703 | /***************************** Header phase *****************************/ |
bogdanm | 0:9b334a45a8ff | 1704 | if(headersize != 0) |
bogdanm | 0:9b334a45a8ff | 1705 | { |
bogdanm | 0:9b334a45a8ff | 1706 | /* Select header phase */ |
bogdanm | 0:9b334a45a8ff | 1707 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_HEADER); |
bogdanm | 0:9b334a45a8ff | 1708 | |
bogdanm | 0:9b334a45a8ff | 1709 | /* Enable Crypto processor */ |
bogdanm | 0:9b334a45a8ff | 1710 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 1711 | |
bogdanm | 0:9b334a45a8ff | 1712 | for(loopcounter = 0; (loopcounter < headersize); loopcounter+=16) |
bogdanm | 0:9b334a45a8ff | 1713 | { |
bogdanm | 0:9b334a45a8ff | 1714 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 1715 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 1716 | |
bogdanm | 0:9b334a45a8ff | 1717 | while(HAL_IS_BIT_CLR(hcryp->Instance->SR, CRYP_FLAG_IFEM)) |
bogdanm | 0:9b334a45a8ff | 1718 | { |
bogdanm | 0:9b334a45a8ff | 1719 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 1720 | if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) |
bogdanm | 0:9b334a45a8ff | 1721 | { |
bogdanm | 0:9b334a45a8ff | 1722 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 1723 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 1724 | |
bogdanm | 0:9b334a45a8ff | 1725 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 1726 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 1727 | |
bogdanm | 0:9b334a45a8ff | 1728 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 1729 | } |
bogdanm | 0:9b334a45a8ff | 1730 | } |
bogdanm | 0:9b334a45a8ff | 1731 | /* Write the header block in the IN FIFO */ |
bogdanm | 0:9b334a45a8ff | 1732 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 1733 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 1734 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 1735 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 1736 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 1737 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 1738 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 1739 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 1740 | } |
bogdanm | 0:9b334a45a8ff | 1741 | |
bogdanm | 0:9b334a45a8ff | 1742 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 1743 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 1744 | |
bogdanm | 0:9b334a45a8ff | 1745 | while((hcryp->Instance->SR & CRYP_FLAG_BUSY) == CRYP_FLAG_BUSY) |
bogdanm | 0:9b334a45a8ff | 1746 | { |
bogdanm | 0:9b334a45a8ff | 1747 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 1748 | if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) |
bogdanm | 0:9b334a45a8ff | 1749 | { |
bogdanm | 0:9b334a45a8ff | 1750 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 1751 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 1752 | |
bogdanm | 0:9b334a45a8ff | 1753 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 1754 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 1755 | |
bogdanm | 0:9b334a45a8ff | 1756 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 1757 | } |
bogdanm | 0:9b334a45a8ff | 1758 | } |
bogdanm | 0:9b334a45a8ff | 1759 | } |
bogdanm | 0:9b334a45a8ff | 1760 | /* Save formatted counter into the scratch buffer pScratch */ |
bogdanm | 0:9b334a45a8ff | 1761 | for(loopcounter = 0; (loopcounter < 16); loopcounter++) |
bogdanm | 0:9b334a45a8ff | 1762 | { |
bogdanm | 0:9b334a45a8ff | 1763 | hcryp->Init.pScratch[loopcounter] = ctr[loopcounter]; |
bogdanm | 0:9b334a45a8ff | 1764 | } |
bogdanm | 0:9b334a45a8ff | 1765 | /* Reset bit 0 */ |
bogdanm | 0:9b334a45a8ff | 1766 | hcryp->Init.pScratch[15] &= 0xfe; |
bogdanm | 0:9b334a45a8ff | 1767 | |
bogdanm | 0:9b334a45a8ff | 1768 | /* Select payload phase once the header phase is performed */ |
bogdanm | 0:9b334a45a8ff | 1769 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_PAYLOAD); |
bogdanm | 0:9b334a45a8ff | 1770 | |
bogdanm | 0:9b334a45a8ff | 1771 | /* Flush FIFO */ |
bogdanm | 0:9b334a45a8ff | 1772 | __HAL_CRYP_FIFO_FLUSH(hcryp); |
bogdanm | 0:9b334a45a8ff | 1773 | |
bogdanm | 0:9b334a45a8ff | 1774 | /* Set the phase */ |
bogdanm | 0:9b334a45a8ff | 1775 | hcryp->Phase = HAL_CRYP_PHASE_PROCESS; |
bogdanm | 0:9b334a45a8ff | 1776 | } |
bogdanm | 0:9b334a45a8ff | 1777 | |
bogdanm | 0:9b334a45a8ff | 1778 | if(Size != 0) |
bogdanm | 0:9b334a45a8ff | 1779 | { |
bogdanm | 0:9b334a45a8ff | 1780 | /* Enable Interrupts */ |
bogdanm | 0:9b334a45a8ff | 1781 | __HAL_CRYP_ENABLE_IT(hcryp, CRYP_IT_INI | CRYP_IT_OUTI); |
bogdanm | 0:9b334a45a8ff | 1782 | /* Enable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 1783 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 1784 | } |
bogdanm | 0:9b334a45a8ff | 1785 | else |
bogdanm | 0:9b334a45a8ff | 1786 | { |
bogdanm | 0:9b334a45a8ff | 1787 | /* Change the CRYP state and phase */ |
bogdanm | 0:9b334a45a8ff | 1788 | hcryp->State = HAL_CRYP_STATE_READY; |
bogdanm | 0:9b334a45a8ff | 1789 | } |
bogdanm | 0:9b334a45a8ff | 1790 | |
bogdanm | 0:9b334a45a8ff | 1791 | /* Return function status */ |
bogdanm | 0:9b334a45a8ff | 1792 | return HAL_OK; |
bogdanm | 0:9b334a45a8ff | 1793 | } |
bogdanm | 0:9b334a45a8ff | 1794 | else if (__HAL_CRYP_GET_IT(hcryp, CRYP_IT_INI)) |
bogdanm | 0:9b334a45a8ff | 1795 | { |
bogdanm | 0:9b334a45a8ff | 1796 | inputaddr = (uint32_t)hcryp->pCrypInBuffPtr; |
bogdanm | 0:9b334a45a8ff | 1797 | /* Write the Input block in the IN FIFO */ |
bogdanm | 0:9b334a45a8ff | 1798 | hcryp->Instance->DR = *(uint32_t*)(inputaddr); |
bogdanm | 0:9b334a45a8ff | 1799 | inputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 1800 | hcryp->Instance->DR = *(uint32_t*)(inputaddr); |
bogdanm | 0:9b334a45a8ff | 1801 | inputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 1802 | hcryp->Instance->DR = *(uint32_t*)(inputaddr); |
bogdanm | 0:9b334a45a8ff | 1803 | inputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 1804 | hcryp->Instance->DR = *(uint32_t*)(inputaddr); |
bogdanm | 0:9b334a45a8ff | 1805 | hcryp->pCrypInBuffPtr += 16; |
bogdanm | 0:9b334a45a8ff | 1806 | hcryp->CrypInCount -= 16; |
bogdanm | 0:9b334a45a8ff | 1807 | if(hcryp->CrypInCount == 0) |
bogdanm | 0:9b334a45a8ff | 1808 | { |
bogdanm | 0:9b334a45a8ff | 1809 | __HAL_CRYP_DISABLE_IT(hcryp, CRYP_IT_INI); |
bogdanm | 0:9b334a45a8ff | 1810 | /* Call Input transfer complete callback */ |
bogdanm | 0:9b334a45a8ff | 1811 | HAL_CRYP_InCpltCallback(hcryp); |
bogdanm | 0:9b334a45a8ff | 1812 | } |
bogdanm | 0:9b334a45a8ff | 1813 | } |
bogdanm | 0:9b334a45a8ff | 1814 | else if (__HAL_CRYP_GET_IT(hcryp, CRYP_IT_OUTI)) |
bogdanm | 0:9b334a45a8ff | 1815 | { |
bogdanm | 0:9b334a45a8ff | 1816 | outputaddr = (uint32_t)hcryp->pCrypOutBuffPtr; |
bogdanm | 0:9b334a45a8ff | 1817 | /* Read the Output block from the Output FIFO */ |
bogdanm | 0:9b334a45a8ff | 1818 | *(uint32_t*)(outputaddr) = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 1819 | outputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 1820 | *(uint32_t*)(outputaddr) = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 1821 | outputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 1822 | *(uint32_t*)(outputaddr) = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 1823 | outputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 1824 | *(uint32_t*)(outputaddr) = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 1825 | hcryp->pCrypOutBuffPtr += 16; |
bogdanm | 0:9b334a45a8ff | 1826 | hcryp->CrypOutCount -= 16; |
bogdanm | 0:9b334a45a8ff | 1827 | if(hcryp->CrypOutCount == 0) |
bogdanm | 0:9b334a45a8ff | 1828 | { |
bogdanm | 0:9b334a45a8ff | 1829 | __HAL_CRYP_DISABLE_IT(hcryp, CRYP_IT_OUTI); |
bogdanm | 0:9b334a45a8ff | 1830 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 1831 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 1832 | /* Change the CRYP peripheral state */ |
bogdanm | 0:9b334a45a8ff | 1833 | hcryp->State = HAL_CRYP_STATE_READY; |
bogdanm | 0:9b334a45a8ff | 1834 | /* Call Input transfer complete callback */ |
bogdanm | 0:9b334a45a8ff | 1835 | HAL_CRYP_OutCpltCallback(hcryp); |
bogdanm | 0:9b334a45a8ff | 1836 | } |
bogdanm | 0:9b334a45a8ff | 1837 | } |
bogdanm | 0:9b334a45a8ff | 1838 | |
bogdanm | 0:9b334a45a8ff | 1839 | /* Return function status */ |
bogdanm | 0:9b334a45a8ff | 1840 | return HAL_OK; |
bogdanm | 0:9b334a45a8ff | 1841 | } |
bogdanm | 0:9b334a45a8ff | 1842 | |
bogdanm | 0:9b334a45a8ff | 1843 | /** |
bogdanm | 0:9b334a45a8ff | 1844 | * @brief Initializes the CRYP peripheral in AES GCM decryption mode using IT. |
bogdanm | 0:9b334a45a8ff | 1845 | * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 1846 | * the configuration information for CRYP module |
bogdanm | 0:9b334a45a8ff | 1847 | * @param pCypherData: Pointer to the cyphertext buffer |
bogdanm | 0:9b334a45a8ff | 1848 | * @param Size: Length of the cyphertext buffer, must be a multiple of 16 |
bogdanm | 0:9b334a45a8ff | 1849 | * @param pPlainData: Pointer to the plaintext buffer |
bogdanm | 0:9b334a45a8ff | 1850 | * @retval HAL status |
bogdanm | 0:9b334a45a8ff | 1851 | */ |
bogdanm | 0:9b334a45a8ff | 1852 | HAL_StatusTypeDef HAL_CRYPEx_AESGCM_Decrypt_IT(CRYP_HandleTypeDef *hcryp, uint8_t *pCypherData, uint16_t Size, uint8_t *pPlainData) |
bogdanm | 0:9b334a45a8ff | 1853 | { |
bogdanm | 0:9b334a45a8ff | 1854 | uint32_t tickstart = 0; |
bogdanm | 0:9b334a45a8ff | 1855 | uint32_t inputaddr; |
bogdanm | 0:9b334a45a8ff | 1856 | uint32_t outputaddr; |
bogdanm | 0:9b334a45a8ff | 1857 | |
bogdanm | 0:9b334a45a8ff | 1858 | if(hcryp->State == HAL_CRYP_STATE_READY) |
bogdanm | 0:9b334a45a8ff | 1859 | { |
bogdanm | 0:9b334a45a8ff | 1860 | /* Process Locked */ |
bogdanm | 0:9b334a45a8ff | 1861 | __HAL_LOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 1862 | |
bogdanm | 0:9b334a45a8ff | 1863 | /* Get the buffer addresses and sizes */ |
bogdanm | 0:9b334a45a8ff | 1864 | hcryp->CrypInCount = Size; |
bogdanm | 0:9b334a45a8ff | 1865 | hcryp->pCrypInBuffPtr = pCypherData; |
bogdanm | 0:9b334a45a8ff | 1866 | hcryp->pCrypOutBuffPtr = pPlainData; |
bogdanm | 0:9b334a45a8ff | 1867 | hcryp->CrypOutCount = Size; |
bogdanm | 0:9b334a45a8ff | 1868 | |
bogdanm | 0:9b334a45a8ff | 1869 | /* Change the CRYP peripheral state */ |
bogdanm | 0:9b334a45a8ff | 1870 | hcryp->State = HAL_CRYP_STATE_BUSY; |
bogdanm | 0:9b334a45a8ff | 1871 | |
bogdanm | 0:9b334a45a8ff | 1872 | /* Check if initialization phase has already been performed */ |
bogdanm | 0:9b334a45a8ff | 1873 | if(hcryp->Phase == HAL_CRYP_PHASE_READY) |
bogdanm | 0:9b334a45a8ff | 1874 | { |
bogdanm | 0:9b334a45a8ff | 1875 | /* Set the key */ |
bogdanm | 0:9b334a45a8ff | 1876 | CRYPEx_GCMCCM_SetKey(hcryp, hcryp->Init.pKey, hcryp->Init.KeySize); |
bogdanm | 0:9b334a45a8ff | 1877 | |
bogdanm | 0:9b334a45a8ff | 1878 | /* Set the CRYP peripheral in AES GCM decryption mode */ |
bogdanm | 0:9b334a45a8ff | 1879 | __HAL_CRYP_SET_MODE(hcryp, CRYP_CR_ALGOMODE_AES_GCM_DECRYPT); |
bogdanm | 0:9b334a45a8ff | 1880 | |
bogdanm | 0:9b334a45a8ff | 1881 | /* Set the Initialization Vector */ |
bogdanm | 0:9b334a45a8ff | 1882 | CRYPEx_GCMCCM_SetInitVector(hcryp, hcryp->Init.pInitVect); |
bogdanm | 0:9b334a45a8ff | 1883 | |
bogdanm | 0:9b334a45a8ff | 1884 | /* Flush FIFO */ |
bogdanm | 0:9b334a45a8ff | 1885 | __HAL_CRYP_FIFO_FLUSH(hcryp); |
bogdanm | 0:9b334a45a8ff | 1886 | |
bogdanm | 0:9b334a45a8ff | 1887 | /* Enable CRYP to start the init phase */ |
bogdanm | 0:9b334a45a8ff | 1888 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 1889 | |
bogdanm | 0:9b334a45a8ff | 1890 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 1891 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 1892 | |
bogdanm | 0:9b334a45a8ff | 1893 | while((CRYP->CR & CRYP_CR_CRYPEN) == CRYP_CR_CRYPEN) |
bogdanm | 0:9b334a45a8ff | 1894 | { |
bogdanm | 0:9b334a45a8ff | 1895 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 1896 | if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) |
bogdanm | 0:9b334a45a8ff | 1897 | { |
bogdanm | 0:9b334a45a8ff | 1898 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 1899 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 1900 | |
bogdanm | 0:9b334a45a8ff | 1901 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 1902 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 1903 | |
bogdanm | 0:9b334a45a8ff | 1904 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 1905 | } |
bogdanm | 0:9b334a45a8ff | 1906 | } |
bogdanm | 0:9b334a45a8ff | 1907 | |
bogdanm | 0:9b334a45a8ff | 1908 | /* Set the header phase */ |
bogdanm | 0:9b334a45a8ff | 1909 | if(CRYPEx_GCMCCM_SetHeaderPhase(hcryp, hcryp->Init.Header, hcryp->Init.HeaderSize, 1) != HAL_OK) |
bogdanm | 0:9b334a45a8ff | 1910 | { |
bogdanm | 0:9b334a45a8ff | 1911 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 1912 | } |
bogdanm | 0:9b334a45a8ff | 1913 | /* Disable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 1914 | __HAL_CRYP_DISABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 1915 | |
bogdanm | 0:9b334a45a8ff | 1916 | /* Select payload phase once the header phase is performed */ |
bogdanm | 0:9b334a45a8ff | 1917 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_PAYLOAD); |
bogdanm | 0:9b334a45a8ff | 1918 | |
bogdanm | 0:9b334a45a8ff | 1919 | /* Set the phase */ |
bogdanm | 0:9b334a45a8ff | 1920 | hcryp->Phase = HAL_CRYP_PHASE_PROCESS; |
bogdanm | 0:9b334a45a8ff | 1921 | } |
bogdanm | 0:9b334a45a8ff | 1922 | |
bogdanm | 0:9b334a45a8ff | 1923 | if(Size != 0) |
bogdanm | 0:9b334a45a8ff | 1924 | { |
bogdanm | 0:9b334a45a8ff | 1925 | /* Enable Interrupts */ |
bogdanm | 0:9b334a45a8ff | 1926 | __HAL_CRYP_ENABLE_IT(hcryp, CRYP_IT_INI | CRYP_IT_OUTI); |
bogdanm | 0:9b334a45a8ff | 1927 | /* Enable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 1928 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 1929 | } |
bogdanm | 0:9b334a45a8ff | 1930 | else |
bogdanm | 0:9b334a45a8ff | 1931 | { |
bogdanm | 0:9b334a45a8ff | 1932 | /* Process Locked */ |
bogdanm | 0:9b334a45a8ff | 1933 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 1934 | /* Change the CRYP state and phase */ |
bogdanm | 0:9b334a45a8ff | 1935 | hcryp->State = HAL_CRYP_STATE_READY; |
bogdanm | 0:9b334a45a8ff | 1936 | } |
bogdanm | 0:9b334a45a8ff | 1937 | |
bogdanm | 0:9b334a45a8ff | 1938 | /* Return function status */ |
bogdanm | 0:9b334a45a8ff | 1939 | return HAL_OK; |
bogdanm | 0:9b334a45a8ff | 1940 | } |
bogdanm | 0:9b334a45a8ff | 1941 | else if (__HAL_CRYP_GET_IT(hcryp, CRYP_IT_INI)) |
bogdanm | 0:9b334a45a8ff | 1942 | { |
bogdanm | 0:9b334a45a8ff | 1943 | inputaddr = (uint32_t)hcryp->pCrypInBuffPtr; |
bogdanm | 0:9b334a45a8ff | 1944 | /* Write the Input block in the IN FIFO */ |
bogdanm | 0:9b334a45a8ff | 1945 | hcryp->Instance->DR = *(uint32_t*)(inputaddr); |
bogdanm | 0:9b334a45a8ff | 1946 | inputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 1947 | hcryp->Instance->DR = *(uint32_t*)(inputaddr); |
bogdanm | 0:9b334a45a8ff | 1948 | inputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 1949 | hcryp->Instance->DR = *(uint32_t*)(inputaddr); |
bogdanm | 0:9b334a45a8ff | 1950 | inputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 1951 | hcryp->Instance->DR = *(uint32_t*)(inputaddr); |
bogdanm | 0:9b334a45a8ff | 1952 | hcryp->pCrypInBuffPtr += 16; |
bogdanm | 0:9b334a45a8ff | 1953 | hcryp->CrypInCount -= 16; |
bogdanm | 0:9b334a45a8ff | 1954 | if(hcryp->CrypInCount == 0) |
bogdanm | 0:9b334a45a8ff | 1955 | { |
bogdanm | 0:9b334a45a8ff | 1956 | __HAL_CRYP_DISABLE_IT(hcryp, CRYP_IT_INI); |
bogdanm | 0:9b334a45a8ff | 1957 | /* Call the Input data transfer complete callback */ |
bogdanm | 0:9b334a45a8ff | 1958 | HAL_CRYP_InCpltCallback(hcryp); |
bogdanm | 0:9b334a45a8ff | 1959 | } |
bogdanm | 0:9b334a45a8ff | 1960 | } |
bogdanm | 0:9b334a45a8ff | 1961 | else if (__HAL_CRYP_GET_IT(hcryp, CRYP_IT_OUTI)) |
bogdanm | 0:9b334a45a8ff | 1962 | { |
bogdanm | 0:9b334a45a8ff | 1963 | outputaddr = (uint32_t)hcryp->pCrypOutBuffPtr; |
bogdanm | 0:9b334a45a8ff | 1964 | /* Read the Output block from the Output FIFO */ |
bogdanm | 0:9b334a45a8ff | 1965 | *(uint32_t*)(outputaddr) = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 1966 | outputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 1967 | *(uint32_t*)(outputaddr) = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 1968 | outputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 1969 | *(uint32_t*)(outputaddr) = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 1970 | outputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 1971 | *(uint32_t*)(outputaddr) = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 1972 | hcryp->pCrypOutBuffPtr += 16; |
bogdanm | 0:9b334a45a8ff | 1973 | hcryp->CrypOutCount -= 16; |
bogdanm | 0:9b334a45a8ff | 1974 | if(hcryp->CrypOutCount == 0) |
bogdanm | 0:9b334a45a8ff | 1975 | { |
bogdanm | 0:9b334a45a8ff | 1976 | __HAL_CRYP_DISABLE_IT(hcryp, CRYP_IT_OUTI); |
bogdanm | 0:9b334a45a8ff | 1977 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 1978 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 1979 | /* Change the CRYP peripheral state */ |
bogdanm | 0:9b334a45a8ff | 1980 | hcryp->State = HAL_CRYP_STATE_READY; |
bogdanm | 0:9b334a45a8ff | 1981 | /* Call Input transfer complete callback */ |
bogdanm | 0:9b334a45a8ff | 1982 | HAL_CRYP_OutCpltCallback(hcryp); |
bogdanm | 0:9b334a45a8ff | 1983 | } |
bogdanm | 0:9b334a45a8ff | 1984 | } |
bogdanm | 0:9b334a45a8ff | 1985 | |
bogdanm | 0:9b334a45a8ff | 1986 | /* Return function status */ |
bogdanm | 0:9b334a45a8ff | 1987 | return HAL_OK; |
bogdanm | 0:9b334a45a8ff | 1988 | } |
bogdanm | 0:9b334a45a8ff | 1989 | |
bogdanm | 0:9b334a45a8ff | 1990 | /** |
bogdanm | 0:9b334a45a8ff | 1991 | * @brief Initializes the CRYP peripheral in AES CCM decryption mode using interrupt |
bogdanm | 0:9b334a45a8ff | 1992 | * then decrypted pCypherData. The cypher data are available in pPlainData. |
bogdanm | 0:9b334a45a8ff | 1993 | * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 1994 | * the configuration information for CRYP module |
bogdanm | 0:9b334a45a8ff | 1995 | * @param pCypherData: Pointer to the cyphertext buffer |
bogdanm | 0:9b334a45a8ff | 1996 | * @param Size: Length of the plaintext buffer, must be a multiple of 16 |
bogdanm | 0:9b334a45a8ff | 1997 | * @param pPlainData: Pointer to the plaintext buffer |
bogdanm | 0:9b334a45a8ff | 1998 | * @retval HAL status |
bogdanm | 0:9b334a45a8ff | 1999 | */ |
bogdanm | 0:9b334a45a8ff | 2000 | HAL_StatusTypeDef HAL_CRYPEx_AESCCM_Decrypt_IT(CRYP_HandleTypeDef *hcryp, uint8_t *pCypherData, uint16_t Size, uint8_t *pPlainData) |
bogdanm | 0:9b334a45a8ff | 2001 | { |
bogdanm | 0:9b334a45a8ff | 2002 | uint32_t inputaddr; |
bogdanm | 0:9b334a45a8ff | 2003 | uint32_t outputaddr; |
bogdanm | 0:9b334a45a8ff | 2004 | uint32_t tickstart = 0; |
bogdanm | 0:9b334a45a8ff | 2005 | uint32_t headersize = hcryp->Init.HeaderSize; |
bogdanm | 0:9b334a45a8ff | 2006 | uint32_t headeraddr = (uint32_t)hcryp->Init.Header; |
bogdanm | 0:9b334a45a8ff | 2007 | uint32_t loopcounter = 0; |
bogdanm | 0:9b334a45a8ff | 2008 | uint32_t bufferidx = 0; |
bogdanm | 0:9b334a45a8ff | 2009 | uint8_t blockb0[16] = {0};/* Block B0 */ |
bogdanm | 0:9b334a45a8ff | 2010 | uint8_t ctr[16] = {0}; /* Counter */ |
bogdanm | 0:9b334a45a8ff | 2011 | uint32_t b0addr = (uint32_t)blockb0; |
bogdanm | 0:9b334a45a8ff | 2012 | |
bogdanm | 0:9b334a45a8ff | 2013 | if(hcryp->State == HAL_CRYP_STATE_READY) |
bogdanm | 0:9b334a45a8ff | 2014 | { |
bogdanm | 0:9b334a45a8ff | 2015 | /* Process Locked */ |
bogdanm | 0:9b334a45a8ff | 2016 | __HAL_LOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 2017 | |
bogdanm | 0:9b334a45a8ff | 2018 | hcryp->CrypInCount = Size; |
bogdanm | 0:9b334a45a8ff | 2019 | hcryp->pCrypInBuffPtr = pCypherData; |
bogdanm | 0:9b334a45a8ff | 2020 | hcryp->pCrypOutBuffPtr = pPlainData; |
bogdanm | 0:9b334a45a8ff | 2021 | hcryp->CrypOutCount = Size; |
bogdanm | 0:9b334a45a8ff | 2022 | |
bogdanm | 0:9b334a45a8ff | 2023 | /* Change the CRYP peripheral state */ |
bogdanm | 0:9b334a45a8ff | 2024 | hcryp->State = HAL_CRYP_STATE_BUSY; |
bogdanm | 0:9b334a45a8ff | 2025 | |
bogdanm | 0:9b334a45a8ff | 2026 | /* Check if initialization phase has already been performed */ |
bogdanm | 0:9b334a45a8ff | 2027 | if(hcryp->Phase == HAL_CRYP_PHASE_READY) |
bogdanm | 0:9b334a45a8ff | 2028 | { |
bogdanm | 0:9b334a45a8ff | 2029 | /************************ Formatting the header block *******************/ |
bogdanm | 0:9b334a45a8ff | 2030 | if(headersize != 0) |
bogdanm | 0:9b334a45a8ff | 2031 | { |
bogdanm | 0:9b334a45a8ff | 2032 | /* Check that the associated data (or header) length is lower than 2^16 - 2^8 = 65536 - 256 = 65280 */ |
bogdanm | 0:9b334a45a8ff | 2033 | if(headersize < 65280) |
bogdanm | 0:9b334a45a8ff | 2034 | { |
bogdanm | 0:9b334a45a8ff | 2035 | hcryp->Init.pScratch[bufferidx++] = (uint8_t) ((headersize >> 8) & 0xFF); |
bogdanm | 0:9b334a45a8ff | 2036 | hcryp->Init.pScratch[bufferidx++] = (uint8_t) ((headersize) & 0xFF); |
bogdanm | 0:9b334a45a8ff | 2037 | headersize += 2; |
bogdanm | 0:9b334a45a8ff | 2038 | } |
bogdanm | 0:9b334a45a8ff | 2039 | else |
bogdanm | 0:9b334a45a8ff | 2040 | { |
bogdanm | 0:9b334a45a8ff | 2041 | /* Header is encoded as 0xff || 0xfe || [headersize]32, i.e., six octets */ |
bogdanm | 0:9b334a45a8ff | 2042 | hcryp->Init.pScratch[bufferidx++] = 0xFF; |
bogdanm | 0:9b334a45a8ff | 2043 | hcryp->Init.pScratch[bufferidx++] = 0xFE; |
bogdanm | 0:9b334a45a8ff | 2044 | hcryp->Init.pScratch[bufferidx++] = headersize & 0xff000000; |
bogdanm | 0:9b334a45a8ff | 2045 | hcryp->Init.pScratch[bufferidx++] = headersize & 0x00ff0000; |
bogdanm | 0:9b334a45a8ff | 2046 | hcryp->Init.pScratch[bufferidx++] = headersize & 0x0000ff00; |
bogdanm | 0:9b334a45a8ff | 2047 | hcryp->Init.pScratch[bufferidx++] = headersize & 0x000000ff; |
bogdanm | 0:9b334a45a8ff | 2048 | headersize += 6; |
bogdanm | 0:9b334a45a8ff | 2049 | } |
bogdanm | 0:9b334a45a8ff | 2050 | /* Copy the header buffer in internal buffer "hcryp->Init.pScratch" */ |
bogdanm | 0:9b334a45a8ff | 2051 | for(loopcounter = 0; loopcounter < headersize; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 2052 | { |
bogdanm | 0:9b334a45a8ff | 2053 | hcryp->Init.pScratch[bufferidx++] = hcryp->Init.Header[loopcounter]; |
bogdanm | 0:9b334a45a8ff | 2054 | } |
bogdanm | 0:9b334a45a8ff | 2055 | /* Check if the header size is modulo 16 */ |
bogdanm | 0:9b334a45a8ff | 2056 | if ((headersize % 16) != 0) |
bogdanm | 0:9b334a45a8ff | 2057 | { |
bogdanm | 0:9b334a45a8ff | 2058 | /* Padd the header buffer with 0s till the hcryp->Init.pScratch length is modulo 16 */ |
bogdanm | 0:9b334a45a8ff | 2059 | for(loopcounter = headersize; loopcounter <= ((headersize/16) + 1) * 16; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 2060 | { |
bogdanm | 0:9b334a45a8ff | 2061 | hcryp->Init.pScratch[loopcounter] = 0; |
bogdanm | 0:9b334a45a8ff | 2062 | } |
bogdanm | 0:9b334a45a8ff | 2063 | /* Set the header size to modulo 16 */ |
bogdanm | 0:9b334a45a8ff | 2064 | headersize = ((headersize/16) + 1) * 16; |
bogdanm | 0:9b334a45a8ff | 2065 | } |
bogdanm | 0:9b334a45a8ff | 2066 | /* Set the pointer headeraddr to hcryp->Init.pScratch */ |
bogdanm | 0:9b334a45a8ff | 2067 | headeraddr = (uint32_t)hcryp->Init.pScratch; |
bogdanm | 0:9b334a45a8ff | 2068 | } |
bogdanm | 0:9b334a45a8ff | 2069 | /*********************** Formatting the block B0 ************************/ |
bogdanm | 0:9b334a45a8ff | 2070 | if(headersize != 0) |
bogdanm | 0:9b334a45a8ff | 2071 | { |
bogdanm | 0:9b334a45a8ff | 2072 | blockb0[0] = 0x40; |
bogdanm | 0:9b334a45a8ff | 2073 | } |
bogdanm | 0:9b334a45a8ff | 2074 | /* Flags byte */ |
bogdanm | 0:9b334a45a8ff | 2075 | /* blockb0[0] |= 0u | (((( (uint8_t) hcryp->Init.TagSize - 2) / 2) & 0x07 ) << 3 ) | ( ( (uint8_t) (15 - hcryp->Init.IVSize) - 1) & 0x07) */ |
bogdanm | 0:9b334a45a8ff | 2076 | blockb0[0] |= (uint8_t)((uint8_t)((uint8_t)(((uint8_t)(hcryp->Init.TagSize - (uint8_t)(2))) >> 1) & (uint8_t)0x07 ) << 3); |
bogdanm | 0:9b334a45a8ff | 2077 | blockb0[0] |= (uint8_t)((uint8_t)((uint8_t)((uint8_t)(15) - hcryp->Init.IVSize) - (uint8_t)1) & (uint8_t)0x07); |
bogdanm | 0:9b334a45a8ff | 2078 | |
bogdanm | 0:9b334a45a8ff | 2079 | for (loopcounter = 0; loopcounter < hcryp->Init.IVSize; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 2080 | { |
bogdanm | 0:9b334a45a8ff | 2081 | blockb0[loopcounter+1] = hcryp->Init.pInitVect[loopcounter]; |
bogdanm | 0:9b334a45a8ff | 2082 | } |
bogdanm | 0:9b334a45a8ff | 2083 | for ( ; loopcounter < 13; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 2084 | { |
bogdanm | 0:9b334a45a8ff | 2085 | blockb0[loopcounter+1] = 0; |
bogdanm | 0:9b334a45a8ff | 2086 | } |
bogdanm | 0:9b334a45a8ff | 2087 | |
bogdanm | 0:9b334a45a8ff | 2088 | blockb0[14] = (Size >> 8); |
bogdanm | 0:9b334a45a8ff | 2089 | blockb0[15] = (Size & 0xFF); |
bogdanm | 0:9b334a45a8ff | 2090 | |
bogdanm | 0:9b334a45a8ff | 2091 | /************************* Formatting the initial counter ***************/ |
bogdanm | 0:9b334a45a8ff | 2092 | /* Byte 0: |
bogdanm | 0:9b334a45a8ff | 2093 | Bits 7 and 6 are reserved and shall be set to 0 |
bogdanm | 0:9b334a45a8ff | 2094 | Bits 3, 4, and 5 shall also be set to 0, to ensure that all the counter |
bogdanm | 0:9b334a45a8ff | 2095 | blocks are distinct from B0 |
bogdanm | 0:9b334a45a8ff | 2096 | Bits 0, 1, and 2 contain the same encoding of q as in B0 |
bogdanm | 0:9b334a45a8ff | 2097 | */ |
bogdanm | 0:9b334a45a8ff | 2098 | ctr[0] = blockb0[0] & 0x07; |
bogdanm | 0:9b334a45a8ff | 2099 | /* byte 1 to NonceSize is the IV (Nonce) */ |
bogdanm | 0:9b334a45a8ff | 2100 | for(loopcounter = 1; loopcounter < hcryp->Init.IVSize + 1; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 2101 | { |
bogdanm | 0:9b334a45a8ff | 2102 | ctr[loopcounter] = blockb0[loopcounter]; |
bogdanm | 0:9b334a45a8ff | 2103 | } |
bogdanm | 0:9b334a45a8ff | 2104 | /* Set the LSB to 1 */ |
bogdanm | 0:9b334a45a8ff | 2105 | ctr[15] |= 0x01; |
bogdanm | 0:9b334a45a8ff | 2106 | |
bogdanm | 0:9b334a45a8ff | 2107 | /* Set the key */ |
bogdanm | 0:9b334a45a8ff | 2108 | CRYPEx_GCMCCM_SetKey(hcryp, hcryp->Init.pKey, hcryp->Init.KeySize); |
bogdanm | 0:9b334a45a8ff | 2109 | |
bogdanm | 0:9b334a45a8ff | 2110 | /* Set the CRYP peripheral in AES CCM mode */ |
bogdanm | 0:9b334a45a8ff | 2111 | __HAL_CRYP_SET_MODE(hcryp, CRYP_CR_ALGOMODE_AES_CCM_DECRYPT); |
bogdanm | 0:9b334a45a8ff | 2112 | |
bogdanm | 0:9b334a45a8ff | 2113 | /* Set the Initialization Vector */ |
bogdanm | 0:9b334a45a8ff | 2114 | CRYPEx_GCMCCM_SetInitVector(hcryp, ctr); |
bogdanm | 0:9b334a45a8ff | 2115 | |
bogdanm | 0:9b334a45a8ff | 2116 | /* Select init phase */ |
bogdanm | 0:9b334a45a8ff | 2117 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_INIT); |
bogdanm | 0:9b334a45a8ff | 2118 | |
bogdanm | 0:9b334a45a8ff | 2119 | b0addr = (uint32_t)blockb0; |
bogdanm | 0:9b334a45a8ff | 2120 | /* Write the blockb0 block in the IN FIFO */ |
bogdanm | 0:9b334a45a8ff | 2121 | hcryp->Instance->DR = *(uint32_t*)(b0addr); |
bogdanm | 0:9b334a45a8ff | 2122 | b0addr+=4; |
bogdanm | 0:9b334a45a8ff | 2123 | hcryp->Instance->DR = *(uint32_t*)(b0addr); |
bogdanm | 0:9b334a45a8ff | 2124 | b0addr+=4; |
bogdanm | 0:9b334a45a8ff | 2125 | hcryp->Instance->DR = *(uint32_t*)(b0addr); |
bogdanm | 0:9b334a45a8ff | 2126 | b0addr+=4; |
bogdanm | 0:9b334a45a8ff | 2127 | hcryp->Instance->DR = *(uint32_t*)(b0addr); |
bogdanm | 0:9b334a45a8ff | 2128 | |
bogdanm | 0:9b334a45a8ff | 2129 | /* Enable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 2130 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 2131 | |
bogdanm | 0:9b334a45a8ff | 2132 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 2133 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 2134 | |
bogdanm | 0:9b334a45a8ff | 2135 | while((CRYP->CR & CRYP_CR_CRYPEN) == CRYP_CR_CRYPEN) |
bogdanm | 0:9b334a45a8ff | 2136 | { |
bogdanm | 0:9b334a45a8ff | 2137 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 2138 | if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) |
bogdanm | 0:9b334a45a8ff | 2139 | { |
bogdanm | 0:9b334a45a8ff | 2140 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 2141 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 2142 | |
bogdanm | 0:9b334a45a8ff | 2143 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 2144 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 2145 | |
bogdanm | 0:9b334a45a8ff | 2146 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 2147 | } |
bogdanm | 0:9b334a45a8ff | 2148 | } |
bogdanm | 0:9b334a45a8ff | 2149 | /***************************** Header phase *****************************/ |
bogdanm | 0:9b334a45a8ff | 2150 | if(headersize != 0) |
bogdanm | 0:9b334a45a8ff | 2151 | { |
bogdanm | 0:9b334a45a8ff | 2152 | /* Select header phase */ |
bogdanm | 0:9b334a45a8ff | 2153 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_HEADER); |
bogdanm | 0:9b334a45a8ff | 2154 | |
bogdanm | 0:9b334a45a8ff | 2155 | /* Enable Crypto processor */ |
bogdanm | 0:9b334a45a8ff | 2156 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 2157 | |
bogdanm | 0:9b334a45a8ff | 2158 | for(loopcounter = 0; (loopcounter < headersize); loopcounter+=16) |
bogdanm | 0:9b334a45a8ff | 2159 | { |
bogdanm | 0:9b334a45a8ff | 2160 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 2161 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 2162 | |
bogdanm | 0:9b334a45a8ff | 2163 | while(HAL_IS_BIT_CLR(hcryp->Instance->SR, CRYP_FLAG_IFEM)) |
bogdanm | 0:9b334a45a8ff | 2164 | { |
bogdanm | 0:9b334a45a8ff | 2165 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 2166 | if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) |
bogdanm | 0:9b334a45a8ff | 2167 | { |
bogdanm | 0:9b334a45a8ff | 2168 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 2169 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 2170 | |
bogdanm | 0:9b334a45a8ff | 2171 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 2172 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 2173 | |
bogdanm | 0:9b334a45a8ff | 2174 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 2175 | } |
bogdanm | 0:9b334a45a8ff | 2176 | } |
bogdanm | 0:9b334a45a8ff | 2177 | /* Write the header block in the IN FIFO */ |
bogdanm | 0:9b334a45a8ff | 2178 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 2179 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 2180 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 2181 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 2182 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 2183 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 2184 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 2185 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 2186 | } |
bogdanm | 0:9b334a45a8ff | 2187 | |
bogdanm | 0:9b334a45a8ff | 2188 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 2189 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 2190 | |
bogdanm | 0:9b334a45a8ff | 2191 | while((hcryp->Instance->SR & CRYP_FLAG_BUSY) == CRYP_FLAG_BUSY) |
bogdanm | 0:9b334a45a8ff | 2192 | { |
bogdanm | 0:9b334a45a8ff | 2193 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 2194 | if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) |
bogdanm | 0:9b334a45a8ff | 2195 | { |
bogdanm | 0:9b334a45a8ff | 2196 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 2197 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 2198 | |
bogdanm | 0:9b334a45a8ff | 2199 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 2200 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 2201 | |
bogdanm | 0:9b334a45a8ff | 2202 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 2203 | } |
bogdanm | 0:9b334a45a8ff | 2204 | } |
bogdanm | 0:9b334a45a8ff | 2205 | } |
bogdanm | 0:9b334a45a8ff | 2206 | /* Save formatted counter into the scratch buffer pScratch */ |
bogdanm | 0:9b334a45a8ff | 2207 | for(loopcounter = 0; (loopcounter < 16); loopcounter++) |
bogdanm | 0:9b334a45a8ff | 2208 | { |
bogdanm | 0:9b334a45a8ff | 2209 | hcryp->Init.pScratch[loopcounter] = ctr[loopcounter]; |
bogdanm | 0:9b334a45a8ff | 2210 | } |
bogdanm | 0:9b334a45a8ff | 2211 | /* Reset bit 0 */ |
bogdanm | 0:9b334a45a8ff | 2212 | hcryp->Init.pScratch[15] &= 0xfe; |
bogdanm | 0:9b334a45a8ff | 2213 | /* Select payload phase once the header phase is performed */ |
bogdanm | 0:9b334a45a8ff | 2214 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_PAYLOAD); |
bogdanm | 0:9b334a45a8ff | 2215 | |
bogdanm | 0:9b334a45a8ff | 2216 | /* Flush FIFO */ |
bogdanm | 0:9b334a45a8ff | 2217 | __HAL_CRYP_FIFO_FLUSH(hcryp); |
bogdanm | 0:9b334a45a8ff | 2218 | |
bogdanm | 0:9b334a45a8ff | 2219 | /* Set the phase */ |
bogdanm | 0:9b334a45a8ff | 2220 | hcryp->Phase = HAL_CRYP_PHASE_PROCESS; |
bogdanm | 0:9b334a45a8ff | 2221 | } |
bogdanm | 0:9b334a45a8ff | 2222 | |
bogdanm | 0:9b334a45a8ff | 2223 | /* Enable Interrupts */ |
bogdanm | 0:9b334a45a8ff | 2224 | __HAL_CRYP_ENABLE_IT(hcryp, CRYP_IT_INI | CRYP_IT_OUTI); |
bogdanm | 0:9b334a45a8ff | 2225 | |
bogdanm | 0:9b334a45a8ff | 2226 | /* Enable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 2227 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 2228 | |
bogdanm | 0:9b334a45a8ff | 2229 | /* Return function status */ |
bogdanm | 0:9b334a45a8ff | 2230 | return HAL_OK; |
bogdanm | 0:9b334a45a8ff | 2231 | } |
bogdanm | 0:9b334a45a8ff | 2232 | else if (__HAL_CRYP_GET_IT(hcryp, CRYP_IT_INI)) |
bogdanm | 0:9b334a45a8ff | 2233 | { |
bogdanm | 0:9b334a45a8ff | 2234 | inputaddr = (uint32_t)hcryp->pCrypInBuffPtr; |
bogdanm | 0:9b334a45a8ff | 2235 | /* Write the Input block in the IN FIFO */ |
bogdanm | 0:9b334a45a8ff | 2236 | hcryp->Instance->DR = *(uint32_t*)(inputaddr); |
bogdanm | 0:9b334a45a8ff | 2237 | inputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 2238 | hcryp->Instance->DR = *(uint32_t*)(inputaddr); |
bogdanm | 0:9b334a45a8ff | 2239 | inputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 2240 | hcryp->Instance->DR = *(uint32_t*)(inputaddr); |
bogdanm | 0:9b334a45a8ff | 2241 | inputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 2242 | hcryp->Instance->DR = *(uint32_t*)(inputaddr); |
bogdanm | 0:9b334a45a8ff | 2243 | hcryp->pCrypInBuffPtr += 16; |
bogdanm | 0:9b334a45a8ff | 2244 | hcryp->CrypInCount -= 16; |
bogdanm | 0:9b334a45a8ff | 2245 | if(hcryp->CrypInCount == 0) |
bogdanm | 0:9b334a45a8ff | 2246 | { |
bogdanm | 0:9b334a45a8ff | 2247 | __HAL_CRYP_DISABLE_IT(hcryp, CRYP_IT_INI); |
bogdanm | 0:9b334a45a8ff | 2248 | /* Call the Input data transfer complete callback */ |
bogdanm | 0:9b334a45a8ff | 2249 | HAL_CRYP_InCpltCallback(hcryp); |
bogdanm | 0:9b334a45a8ff | 2250 | } |
bogdanm | 0:9b334a45a8ff | 2251 | } |
bogdanm | 0:9b334a45a8ff | 2252 | else if (__HAL_CRYP_GET_IT(hcryp, CRYP_IT_OUTI)) |
bogdanm | 0:9b334a45a8ff | 2253 | { |
bogdanm | 0:9b334a45a8ff | 2254 | outputaddr = (uint32_t)hcryp->pCrypOutBuffPtr; |
bogdanm | 0:9b334a45a8ff | 2255 | /* Read the Output block from the Output FIFO */ |
bogdanm | 0:9b334a45a8ff | 2256 | *(uint32_t*)(outputaddr) = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 2257 | outputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 2258 | *(uint32_t*)(outputaddr) = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 2259 | outputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 2260 | *(uint32_t*)(outputaddr) = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 2261 | outputaddr+=4; |
bogdanm | 0:9b334a45a8ff | 2262 | *(uint32_t*)(outputaddr) = hcryp->Instance->DOUT; |
bogdanm | 0:9b334a45a8ff | 2263 | hcryp->pCrypOutBuffPtr += 16; |
bogdanm | 0:9b334a45a8ff | 2264 | hcryp->CrypOutCount -= 16; |
bogdanm | 0:9b334a45a8ff | 2265 | if(hcryp->CrypOutCount == 0) |
bogdanm | 0:9b334a45a8ff | 2266 | { |
bogdanm | 0:9b334a45a8ff | 2267 | __HAL_CRYP_DISABLE_IT(hcryp, CRYP_IT_OUTI); |
bogdanm | 0:9b334a45a8ff | 2268 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 2269 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 2270 | /* Change the CRYP peripheral state */ |
bogdanm | 0:9b334a45a8ff | 2271 | hcryp->State = HAL_CRYP_STATE_READY; |
bogdanm | 0:9b334a45a8ff | 2272 | /* Call Input transfer complete callback */ |
bogdanm | 0:9b334a45a8ff | 2273 | HAL_CRYP_OutCpltCallback(hcryp); |
bogdanm | 0:9b334a45a8ff | 2274 | } |
bogdanm | 0:9b334a45a8ff | 2275 | } |
bogdanm | 0:9b334a45a8ff | 2276 | |
bogdanm | 0:9b334a45a8ff | 2277 | /* Return function status */ |
bogdanm | 0:9b334a45a8ff | 2278 | return HAL_OK; |
bogdanm | 0:9b334a45a8ff | 2279 | } |
bogdanm | 0:9b334a45a8ff | 2280 | |
bogdanm | 0:9b334a45a8ff | 2281 | /** |
bogdanm | 0:9b334a45a8ff | 2282 | * @brief Initializes the CRYP peripheral in AES GCM encryption mode using DMA. |
bogdanm | 0:9b334a45a8ff | 2283 | * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 2284 | * the configuration information for CRYP module |
bogdanm | 0:9b334a45a8ff | 2285 | * @param pPlainData: Pointer to the plaintext buffer |
bogdanm | 0:9b334a45a8ff | 2286 | * @param Size: Length of the plaintext buffer, must be a multiple of 16 |
bogdanm | 0:9b334a45a8ff | 2287 | * @param pCypherData: Pointer to the cyphertext buffer |
bogdanm | 0:9b334a45a8ff | 2288 | * @retval HAL status |
bogdanm | 0:9b334a45a8ff | 2289 | */ |
bogdanm | 0:9b334a45a8ff | 2290 | HAL_StatusTypeDef HAL_CRYPEx_AESGCM_Encrypt_DMA(CRYP_HandleTypeDef *hcryp, uint8_t *pPlainData, uint16_t Size, uint8_t *pCypherData) |
bogdanm | 0:9b334a45a8ff | 2291 | { |
bogdanm | 0:9b334a45a8ff | 2292 | uint32_t tickstart = 0; |
bogdanm | 0:9b334a45a8ff | 2293 | uint32_t inputaddr; |
bogdanm | 0:9b334a45a8ff | 2294 | uint32_t outputaddr; |
bogdanm | 0:9b334a45a8ff | 2295 | |
bogdanm | 0:9b334a45a8ff | 2296 | if((hcryp->State == HAL_CRYP_STATE_READY) || (hcryp->Phase == HAL_CRYP_PHASE_PROCESS)) |
bogdanm | 0:9b334a45a8ff | 2297 | { |
bogdanm | 0:9b334a45a8ff | 2298 | /* Process Locked */ |
bogdanm | 0:9b334a45a8ff | 2299 | __HAL_LOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 2300 | |
bogdanm | 0:9b334a45a8ff | 2301 | inputaddr = (uint32_t)pPlainData; |
bogdanm | 0:9b334a45a8ff | 2302 | outputaddr = (uint32_t)pCypherData; |
bogdanm | 0:9b334a45a8ff | 2303 | |
bogdanm | 0:9b334a45a8ff | 2304 | /* Change the CRYP peripheral state */ |
bogdanm | 0:9b334a45a8ff | 2305 | hcryp->State = HAL_CRYP_STATE_BUSY; |
bogdanm | 0:9b334a45a8ff | 2306 | |
bogdanm | 0:9b334a45a8ff | 2307 | /* Check if initialization phase has already been performed */ |
bogdanm | 0:9b334a45a8ff | 2308 | if(hcryp->Phase == HAL_CRYP_PHASE_READY) |
bogdanm | 0:9b334a45a8ff | 2309 | { |
bogdanm | 0:9b334a45a8ff | 2310 | /* Set the key */ |
bogdanm | 0:9b334a45a8ff | 2311 | CRYPEx_GCMCCM_SetKey(hcryp, hcryp->Init.pKey, hcryp->Init.KeySize); |
bogdanm | 0:9b334a45a8ff | 2312 | |
bogdanm | 0:9b334a45a8ff | 2313 | /* Set the CRYP peripheral in AES GCM mode */ |
bogdanm | 0:9b334a45a8ff | 2314 | __HAL_CRYP_SET_MODE(hcryp, CRYP_CR_ALGOMODE_AES_GCM_ENCRYPT); |
bogdanm | 0:9b334a45a8ff | 2315 | |
bogdanm | 0:9b334a45a8ff | 2316 | /* Set the Initialization Vector */ |
bogdanm | 0:9b334a45a8ff | 2317 | CRYPEx_GCMCCM_SetInitVector(hcryp, hcryp->Init.pInitVect); |
bogdanm | 0:9b334a45a8ff | 2318 | |
bogdanm | 0:9b334a45a8ff | 2319 | /* Flush FIFO */ |
bogdanm | 0:9b334a45a8ff | 2320 | __HAL_CRYP_FIFO_FLUSH(hcryp); |
bogdanm | 0:9b334a45a8ff | 2321 | |
bogdanm | 0:9b334a45a8ff | 2322 | /* Enable CRYP to start the init phase */ |
bogdanm | 0:9b334a45a8ff | 2323 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 2324 | |
bogdanm | 0:9b334a45a8ff | 2325 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 2326 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 2327 | |
bogdanm | 0:9b334a45a8ff | 2328 | while((CRYP->CR & CRYP_CR_CRYPEN) == CRYP_CR_CRYPEN) |
bogdanm | 0:9b334a45a8ff | 2329 | { |
bogdanm | 0:9b334a45a8ff | 2330 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 2331 | if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) |
bogdanm | 0:9b334a45a8ff | 2332 | { |
bogdanm | 0:9b334a45a8ff | 2333 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 2334 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 2335 | |
bogdanm | 0:9b334a45a8ff | 2336 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 2337 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 2338 | |
bogdanm | 0:9b334a45a8ff | 2339 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 2340 | } |
bogdanm | 0:9b334a45a8ff | 2341 | } |
bogdanm | 0:9b334a45a8ff | 2342 | /* Flush FIFO */ |
bogdanm | 0:9b334a45a8ff | 2343 | __HAL_CRYP_FIFO_FLUSH(hcryp); |
bogdanm | 0:9b334a45a8ff | 2344 | |
bogdanm | 0:9b334a45a8ff | 2345 | /* Set the header phase */ |
bogdanm | 0:9b334a45a8ff | 2346 | if(CRYPEx_GCMCCM_SetHeaderPhase(hcryp, hcryp->Init.Header, hcryp->Init.HeaderSize, 1) != HAL_OK) |
bogdanm | 0:9b334a45a8ff | 2347 | { |
bogdanm | 0:9b334a45a8ff | 2348 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 2349 | } |
bogdanm | 0:9b334a45a8ff | 2350 | /* Disable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 2351 | __HAL_CRYP_DISABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 2352 | |
bogdanm | 0:9b334a45a8ff | 2353 | /* Select payload phase once the header phase is performed */ |
bogdanm | 0:9b334a45a8ff | 2354 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_PAYLOAD); |
bogdanm | 0:9b334a45a8ff | 2355 | |
bogdanm | 0:9b334a45a8ff | 2356 | /* Flush FIFO */ |
bogdanm | 0:9b334a45a8ff | 2357 | __HAL_CRYP_FIFO_FLUSH(hcryp); |
bogdanm | 0:9b334a45a8ff | 2358 | |
bogdanm | 0:9b334a45a8ff | 2359 | /* Set the phase */ |
bogdanm | 0:9b334a45a8ff | 2360 | hcryp->Phase = HAL_CRYP_PHASE_PROCESS; |
bogdanm | 0:9b334a45a8ff | 2361 | } |
bogdanm | 0:9b334a45a8ff | 2362 | |
bogdanm | 0:9b334a45a8ff | 2363 | /* Set the input and output addresses and start DMA transfer */ |
bogdanm | 0:9b334a45a8ff | 2364 | CRYPEx_GCMCCM_SetDMAConfig(hcryp, inputaddr, Size, outputaddr); |
bogdanm | 0:9b334a45a8ff | 2365 | |
bogdanm | 0:9b334a45a8ff | 2366 | /* Unlock process */ |
bogdanm | 0:9b334a45a8ff | 2367 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 2368 | |
bogdanm | 0:9b334a45a8ff | 2369 | /* Return function status */ |
bogdanm | 0:9b334a45a8ff | 2370 | return HAL_OK; |
bogdanm | 0:9b334a45a8ff | 2371 | } |
bogdanm | 0:9b334a45a8ff | 2372 | else |
bogdanm | 0:9b334a45a8ff | 2373 | { |
bogdanm | 0:9b334a45a8ff | 2374 | return HAL_ERROR; |
bogdanm | 0:9b334a45a8ff | 2375 | } |
bogdanm | 0:9b334a45a8ff | 2376 | } |
bogdanm | 0:9b334a45a8ff | 2377 | |
bogdanm | 0:9b334a45a8ff | 2378 | /** |
bogdanm | 0:9b334a45a8ff | 2379 | * @brief Initializes the CRYP peripheral in AES CCM encryption mode using interrupt. |
bogdanm | 0:9b334a45a8ff | 2380 | * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 2381 | * the configuration information for CRYP module |
bogdanm | 0:9b334a45a8ff | 2382 | * @param pPlainData: Pointer to the plaintext buffer |
bogdanm | 0:9b334a45a8ff | 2383 | * @param Size: Length of the plaintext buffer, must be a multiple of 16 |
bogdanm | 0:9b334a45a8ff | 2384 | * @param pCypherData: Pointer to the cyphertext buffer |
bogdanm | 0:9b334a45a8ff | 2385 | * @retval HAL status |
bogdanm | 0:9b334a45a8ff | 2386 | */ |
bogdanm | 0:9b334a45a8ff | 2387 | HAL_StatusTypeDef HAL_CRYPEx_AESCCM_Encrypt_DMA(CRYP_HandleTypeDef *hcryp, uint8_t *pPlainData, uint16_t Size, uint8_t *pCypherData) |
bogdanm | 0:9b334a45a8ff | 2388 | { |
bogdanm | 0:9b334a45a8ff | 2389 | uint32_t tickstart = 0; |
bogdanm | 0:9b334a45a8ff | 2390 | uint32_t inputaddr; |
bogdanm | 0:9b334a45a8ff | 2391 | uint32_t outputaddr; |
bogdanm | 0:9b334a45a8ff | 2392 | uint32_t headersize; |
bogdanm | 0:9b334a45a8ff | 2393 | uint32_t headeraddr; |
bogdanm | 0:9b334a45a8ff | 2394 | uint32_t loopcounter = 0; |
bogdanm | 0:9b334a45a8ff | 2395 | uint32_t bufferidx = 0; |
bogdanm | 0:9b334a45a8ff | 2396 | uint8_t blockb0[16] = {0};/* Block B0 */ |
bogdanm | 0:9b334a45a8ff | 2397 | uint8_t ctr[16] = {0}; /* Counter */ |
bogdanm | 0:9b334a45a8ff | 2398 | uint32_t b0addr = (uint32_t)blockb0; |
bogdanm | 0:9b334a45a8ff | 2399 | |
bogdanm | 0:9b334a45a8ff | 2400 | if((hcryp->State == HAL_CRYP_STATE_READY) || (hcryp->Phase == HAL_CRYP_PHASE_PROCESS)) |
bogdanm | 0:9b334a45a8ff | 2401 | { |
bogdanm | 0:9b334a45a8ff | 2402 | /* Process Locked */ |
bogdanm | 0:9b334a45a8ff | 2403 | __HAL_LOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 2404 | |
bogdanm | 0:9b334a45a8ff | 2405 | inputaddr = (uint32_t)pPlainData; |
bogdanm | 0:9b334a45a8ff | 2406 | outputaddr = (uint32_t)pCypherData; |
bogdanm | 0:9b334a45a8ff | 2407 | |
bogdanm | 0:9b334a45a8ff | 2408 | headersize = hcryp->Init.HeaderSize; |
bogdanm | 0:9b334a45a8ff | 2409 | headeraddr = (uint32_t)hcryp->Init.Header; |
bogdanm | 0:9b334a45a8ff | 2410 | |
bogdanm | 0:9b334a45a8ff | 2411 | hcryp->CrypInCount = Size; |
bogdanm | 0:9b334a45a8ff | 2412 | hcryp->pCrypInBuffPtr = pPlainData; |
bogdanm | 0:9b334a45a8ff | 2413 | hcryp->pCrypOutBuffPtr = pCypherData; |
bogdanm | 0:9b334a45a8ff | 2414 | hcryp->CrypOutCount = Size; |
bogdanm | 0:9b334a45a8ff | 2415 | |
bogdanm | 0:9b334a45a8ff | 2416 | /* Change the CRYP peripheral state */ |
bogdanm | 0:9b334a45a8ff | 2417 | hcryp->State = HAL_CRYP_STATE_BUSY; |
bogdanm | 0:9b334a45a8ff | 2418 | |
bogdanm | 0:9b334a45a8ff | 2419 | /* Check if initialization phase has already been performed */ |
bogdanm | 0:9b334a45a8ff | 2420 | if(hcryp->Phase == HAL_CRYP_PHASE_READY) |
bogdanm | 0:9b334a45a8ff | 2421 | { |
bogdanm | 0:9b334a45a8ff | 2422 | /************************ Formatting the header block *******************/ |
bogdanm | 0:9b334a45a8ff | 2423 | if(headersize != 0) |
bogdanm | 0:9b334a45a8ff | 2424 | { |
bogdanm | 0:9b334a45a8ff | 2425 | /* Check that the associated data (or header) length is lower than 2^16 - 2^8 = 65536 - 256 = 65280 */ |
bogdanm | 0:9b334a45a8ff | 2426 | if(headersize < 65280) |
bogdanm | 0:9b334a45a8ff | 2427 | { |
bogdanm | 0:9b334a45a8ff | 2428 | hcryp->Init.pScratch[bufferidx++] = (uint8_t) ((headersize >> 8) & 0xFF); |
bogdanm | 0:9b334a45a8ff | 2429 | hcryp->Init.pScratch[bufferidx++] = (uint8_t) ((headersize) & 0xFF); |
bogdanm | 0:9b334a45a8ff | 2430 | headersize += 2; |
bogdanm | 0:9b334a45a8ff | 2431 | } |
bogdanm | 0:9b334a45a8ff | 2432 | else |
bogdanm | 0:9b334a45a8ff | 2433 | { |
bogdanm | 0:9b334a45a8ff | 2434 | /* Header is encoded as 0xff || 0xfe || [headersize]32, i.e., six octets */ |
bogdanm | 0:9b334a45a8ff | 2435 | hcryp->Init.pScratch[bufferidx++] = 0xFF; |
bogdanm | 0:9b334a45a8ff | 2436 | hcryp->Init.pScratch[bufferidx++] = 0xFE; |
bogdanm | 0:9b334a45a8ff | 2437 | hcryp->Init.pScratch[bufferidx++] = headersize & 0xff000000; |
bogdanm | 0:9b334a45a8ff | 2438 | hcryp->Init.pScratch[bufferidx++] = headersize & 0x00ff0000; |
bogdanm | 0:9b334a45a8ff | 2439 | hcryp->Init.pScratch[bufferidx++] = headersize & 0x0000ff00; |
bogdanm | 0:9b334a45a8ff | 2440 | hcryp->Init.pScratch[bufferidx++] = headersize & 0x000000ff; |
bogdanm | 0:9b334a45a8ff | 2441 | headersize += 6; |
bogdanm | 0:9b334a45a8ff | 2442 | } |
bogdanm | 0:9b334a45a8ff | 2443 | /* Copy the header buffer in internal buffer "hcryp->Init.pScratch" */ |
bogdanm | 0:9b334a45a8ff | 2444 | for(loopcounter = 0; loopcounter < headersize; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 2445 | { |
bogdanm | 0:9b334a45a8ff | 2446 | hcryp->Init.pScratch[bufferidx++] = hcryp->Init.Header[loopcounter]; |
bogdanm | 0:9b334a45a8ff | 2447 | } |
bogdanm | 0:9b334a45a8ff | 2448 | /* Check if the header size is modulo 16 */ |
bogdanm | 0:9b334a45a8ff | 2449 | if ((headersize % 16) != 0) |
bogdanm | 0:9b334a45a8ff | 2450 | { |
bogdanm | 0:9b334a45a8ff | 2451 | /* Padd the header buffer with 0s till the hcryp->Init.pScratch length is modulo 16 */ |
bogdanm | 0:9b334a45a8ff | 2452 | for(loopcounter = headersize; loopcounter <= ((headersize/16) + 1) * 16; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 2453 | { |
bogdanm | 0:9b334a45a8ff | 2454 | hcryp->Init.pScratch[loopcounter] = 0; |
bogdanm | 0:9b334a45a8ff | 2455 | } |
bogdanm | 0:9b334a45a8ff | 2456 | /* Set the header size to modulo 16 */ |
bogdanm | 0:9b334a45a8ff | 2457 | headersize = ((headersize/16) + 1) * 16; |
bogdanm | 0:9b334a45a8ff | 2458 | } |
bogdanm | 0:9b334a45a8ff | 2459 | /* Set the pointer headeraddr to hcryp->Init.pScratch */ |
bogdanm | 0:9b334a45a8ff | 2460 | headeraddr = (uint32_t)hcryp->Init.pScratch; |
bogdanm | 0:9b334a45a8ff | 2461 | } |
bogdanm | 0:9b334a45a8ff | 2462 | /*********************** Formatting the block B0 ************************/ |
bogdanm | 0:9b334a45a8ff | 2463 | if(headersize != 0) |
bogdanm | 0:9b334a45a8ff | 2464 | { |
bogdanm | 0:9b334a45a8ff | 2465 | blockb0[0] = 0x40; |
bogdanm | 0:9b334a45a8ff | 2466 | } |
bogdanm | 0:9b334a45a8ff | 2467 | /* Flags byte */ |
bogdanm | 0:9b334a45a8ff | 2468 | /* blockb0[0] |= 0u | (((( (uint8_t) hcryp->Init.TagSize - 2) / 2) & 0x07 ) << 3 ) | ( ( (uint8_t) (15 - hcryp->Init.IVSize) - 1) & 0x07) */ |
bogdanm | 0:9b334a45a8ff | 2469 | blockb0[0] |= (uint8_t)((uint8_t)((uint8_t)(((uint8_t)(hcryp->Init.TagSize - (uint8_t)(2))) >> 1) & (uint8_t)0x07 ) << 3); |
bogdanm | 0:9b334a45a8ff | 2470 | blockb0[0] |= (uint8_t)((uint8_t)((uint8_t)((uint8_t)(15) - hcryp->Init.IVSize) - (uint8_t)1) & (uint8_t)0x07); |
bogdanm | 0:9b334a45a8ff | 2471 | |
bogdanm | 0:9b334a45a8ff | 2472 | for (loopcounter = 0; loopcounter < hcryp->Init.IVSize; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 2473 | { |
bogdanm | 0:9b334a45a8ff | 2474 | blockb0[loopcounter+1] = hcryp->Init.pInitVect[loopcounter]; |
bogdanm | 0:9b334a45a8ff | 2475 | } |
bogdanm | 0:9b334a45a8ff | 2476 | for ( ; loopcounter < 13; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 2477 | { |
bogdanm | 0:9b334a45a8ff | 2478 | blockb0[loopcounter+1] = 0; |
bogdanm | 0:9b334a45a8ff | 2479 | } |
bogdanm | 0:9b334a45a8ff | 2480 | |
bogdanm | 0:9b334a45a8ff | 2481 | blockb0[14] = (Size >> 8); |
bogdanm | 0:9b334a45a8ff | 2482 | blockb0[15] = (Size & 0xFF); |
bogdanm | 0:9b334a45a8ff | 2483 | |
bogdanm | 0:9b334a45a8ff | 2484 | /************************* Formatting the initial counter ***************/ |
bogdanm | 0:9b334a45a8ff | 2485 | /* Byte 0: |
bogdanm | 0:9b334a45a8ff | 2486 | Bits 7 and 6 are reserved and shall be set to 0 |
bogdanm | 0:9b334a45a8ff | 2487 | Bits 3, 4, and 5 shall also be set to 0, to ensure that all the counter |
bogdanm | 0:9b334a45a8ff | 2488 | blocks are distinct from B0 |
bogdanm | 0:9b334a45a8ff | 2489 | Bits 0, 1, and 2 contain the same encoding of q as in B0 |
bogdanm | 0:9b334a45a8ff | 2490 | */ |
bogdanm | 0:9b334a45a8ff | 2491 | ctr[0] = blockb0[0] & 0x07; |
bogdanm | 0:9b334a45a8ff | 2492 | /* byte 1 to NonceSize is the IV (Nonce) */ |
bogdanm | 0:9b334a45a8ff | 2493 | for(loopcounter = 1; loopcounter < hcryp->Init.IVSize + 1; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 2494 | { |
bogdanm | 0:9b334a45a8ff | 2495 | ctr[loopcounter] = blockb0[loopcounter]; |
bogdanm | 0:9b334a45a8ff | 2496 | } |
bogdanm | 0:9b334a45a8ff | 2497 | /* Set the LSB to 1 */ |
bogdanm | 0:9b334a45a8ff | 2498 | ctr[15] |= 0x01; |
bogdanm | 0:9b334a45a8ff | 2499 | |
bogdanm | 0:9b334a45a8ff | 2500 | /* Set the key */ |
bogdanm | 0:9b334a45a8ff | 2501 | CRYPEx_GCMCCM_SetKey(hcryp, hcryp->Init.pKey, hcryp->Init.KeySize); |
bogdanm | 0:9b334a45a8ff | 2502 | |
bogdanm | 0:9b334a45a8ff | 2503 | /* Set the CRYP peripheral in AES CCM mode */ |
bogdanm | 0:9b334a45a8ff | 2504 | __HAL_CRYP_SET_MODE(hcryp, CRYP_CR_ALGOMODE_AES_CCM_ENCRYPT); |
bogdanm | 0:9b334a45a8ff | 2505 | |
bogdanm | 0:9b334a45a8ff | 2506 | /* Set the Initialization Vector */ |
bogdanm | 0:9b334a45a8ff | 2507 | CRYPEx_GCMCCM_SetInitVector(hcryp, ctr); |
bogdanm | 0:9b334a45a8ff | 2508 | |
bogdanm | 0:9b334a45a8ff | 2509 | /* Select init phase */ |
bogdanm | 0:9b334a45a8ff | 2510 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_INIT); |
bogdanm | 0:9b334a45a8ff | 2511 | |
bogdanm | 0:9b334a45a8ff | 2512 | b0addr = (uint32_t)blockb0; |
bogdanm | 0:9b334a45a8ff | 2513 | /* Write the blockb0 block in the IN FIFO */ |
bogdanm | 0:9b334a45a8ff | 2514 | hcryp->Instance->DR = *(uint32_t*)(b0addr); |
bogdanm | 0:9b334a45a8ff | 2515 | b0addr+=4; |
bogdanm | 0:9b334a45a8ff | 2516 | hcryp->Instance->DR = *(uint32_t*)(b0addr); |
bogdanm | 0:9b334a45a8ff | 2517 | b0addr+=4; |
bogdanm | 0:9b334a45a8ff | 2518 | hcryp->Instance->DR = *(uint32_t*)(b0addr); |
bogdanm | 0:9b334a45a8ff | 2519 | b0addr+=4; |
bogdanm | 0:9b334a45a8ff | 2520 | hcryp->Instance->DR = *(uint32_t*)(b0addr); |
bogdanm | 0:9b334a45a8ff | 2521 | |
bogdanm | 0:9b334a45a8ff | 2522 | /* Enable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 2523 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 2524 | |
bogdanm | 0:9b334a45a8ff | 2525 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 2526 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 2527 | |
bogdanm | 0:9b334a45a8ff | 2528 | while((CRYP->CR & CRYP_CR_CRYPEN) == CRYP_CR_CRYPEN) |
bogdanm | 0:9b334a45a8ff | 2529 | { |
bogdanm | 0:9b334a45a8ff | 2530 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 2531 | if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) |
bogdanm | 0:9b334a45a8ff | 2532 | { |
bogdanm | 0:9b334a45a8ff | 2533 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 2534 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 2535 | |
bogdanm | 0:9b334a45a8ff | 2536 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 2537 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 2538 | |
bogdanm | 0:9b334a45a8ff | 2539 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 2540 | } |
bogdanm | 0:9b334a45a8ff | 2541 | } |
bogdanm | 0:9b334a45a8ff | 2542 | /***************************** Header phase *****************************/ |
bogdanm | 0:9b334a45a8ff | 2543 | if(headersize != 0) |
bogdanm | 0:9b334a45a8ff | 2544 | { |
bogdanm | 0:9b334a45a8ff | 2545 | /* Select header phase */ |
bogdanm | 0:9b334a45a8ff | 2546 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_HEADER); |
bogdanm | 0:9b334a45a8ff | 2547 | |
bogdanm | 0:9b334a45a8ff | 2548 | /* Enable Crypto processor */ |
bogdanm | 0:9b334a45a8ff | 2549 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 2550 | |
bogdanm | 0:9b334a45a8ff | 2551 | for(loopcounter = 0; (loopcounter < headersize); loopcounter+=16) |
bogdanm | 0:9b334a45a8ff | 2552 | { |
bogdanm | 0:9b334a45a8ff | 2553 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 2554 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 2555 | |
bogdanm | 0:9b334a45a8ff | 2556 | while(HAL_IS_BIT_CLR(hcryp->Instance->SR, CRYP_FLAG_IFEM)) |
bogdanm | 0:9b334a45a8ff | 2557 | { |
bogdanm | 0:9b334a45a8ff | 2558 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 2559 | if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) |
bogdanm | 0:9b334a45a8ff | 2560 | { |
bogdanm | 0:9b334a45a8ff | 2561 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 2562 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 2563 | |
bogdanm | 0:9b334a45a8ff | 2564 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 2565 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 2566 | |
bogdanm | 0:9b334a45a8ff | 2567 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 2568 | } |
bogdanm | 0:9b334a45a8ff | 2569 | } |
bogdanm | 0:9b334a45a8ff | 2570 | /* Write the header block in the IN FIFO */ |
bogdanm | 0:9b334a45a8ff | 2571 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 2572 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 2573 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 2574 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 2575 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 2576 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 2577 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 2578 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 2579 | } |
bogdanm | 0:9b334a45a8ff | 2580 | |
bogdanm | 0:9b334a45a8ff | 2581 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 2582 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 2583 | |
bogdanm | 0:9b334a45a8ff | 2584 | while((hcryp->Instance->SR & CRYP_FLAG_BUSY) == CRYP_FLAG_BUSY) |
bogdanm | 0:9b334a45a8ff | 2585 | { |
bogdanm | 0:9b334a45a8ff | 2586 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 2587 | if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) |
bogdanm | 0:9b334a45a8ff | 2588 | { |
bogdanm | 0:9b334a45a8ff | 2589 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 2590 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 2591 | |
bogdanm | 0:9b334a45a8ff | 2592 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 2593 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 2594 | |
bogdanm | 0:9b334a45a8ff | 2595 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 2596 | } |
bogdanm | 0:9b334a45a8ff | 2597 | } |
bogdanm | 0:9b334a45a8ff | 2598 | } |
bogdanm | 0:9b334a45a8ff | 2599 | /* Save formatted counter into the scratch buffer pScratch */ |
bogdanm | 0:9b334a45a8ff | 2600 | for(loopcounter = 0; (loopcounter < 16); loopcounter++) |
bogdanm | 0:9b334a45a8ff | 2601 | { |
bogdanm | 0:9b334a45a8ff | 2602 | hcryp->Init.pScratch[loopcounter] = ctr[loopcounter]; |
bogdanm | 0:9b334a45a8ff | 2603 | } |
bogdanm | 0:9b334a45a8ff | 2604 | /* Reset bit 0 */ |
bogdanm | 0:9b334a45a8ff | 2605 | hcryp->Init.pScratch[15] &= 0xfe; |
bogdanm | 0:9b334a45a8ff | 2606 | |
bogdanm | 0:9b334a45a8ff | 2607 | /* Select payload phase once the header phase is performed */ |
bogdanm | 0:9b334a45a8ff | 2608 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_PAYLOAD); |
bogdanm | 0:9b334a45a8ff | 2609 | |
bogdanm | 0:9b334a45a8ff | 2610 | /* Flush FIFO */ |
bogdanm | 0:9b334a45a8ff | 2611 | __HAL_CRYP_FIFO_FLUSH(hcryp); |
bogdanm | 0:9b334a45a8ff | 2612 | |
bogdanm | 0:9b334a45a8ff | 2613 | /* Set the phase */ |
bogdanm | 0:9b334a45a8ff | 2614 | hcryp->Phase = HAL_CRYP_PHASE_PROCESS; |
bogdanm | 0:9b334a45a8ff | 2615 | } |
bogdanm | 0:9b334a45a8ff | 2616 | |
bogdanm | 0:9b334a45a8ff | 2617 | /* Set the input and output addresses and start DMA transfer */ |
bogdanm | 0:9b334a45a8ff | 2618 | CRYPEx_GCMCCM_SetDMAConfig(hcryp, inputaddr, Size, outputaddr); |
bogdanm | 0:9b334a45a8ff | 2619 | |
bogdanm | 0:9b334a45a8ff | 2620 | /* Unlock process */ |
bogdanm | 0:9b334a45a8ff | 2621 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 2622 | |
bogdanm | 0:9b334a45a8ff | 2623 | /* Return function status */ |
bogdanm | 0:9b334a45a8ff | 2624 | return HAL_OK; |
bogdanm | 0:9b334a45a8ff | 2625 | } |
bogdanm | 0:9b334a45a8ff | 2626 | else |
bogdanm | 0:9b334a45a8ff | 2627 | { |
bogdanm | 0:9b334a45a8ff | 2628 | return HAL_ERROR; |
bogdanm | 0:9b334a45a8ff | 2629 | } |
bogdanm | 0:9b334a45a8ff | 2630 | } |
bogdanm | 0:9b334a45a8ff | 2631 | |
bogdanm | 0:9b334a45a8ff | 2632 | /** |
bogdanm | 0:9b334a45a8ff | 2633 | * @brief Initializes the CRYP peripheral in AES GCM decryption mode using DMA. |
bogdanm | 0:9b334a45a8ff | 2634 | * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 2635 | * the configuration information for CRYP module |
bogdanm | 0:9b334a45a8ff | 2636 | * @param pCypherData: Pointer to the cyphertext buffer. |
bogdanm | 0:9b334a45a8ff | 2637 | * @param Size: Length of the cyphertext buffer, must be a multiple of 16 |
bogdanm | 0:9b334a45a8ff | 2638 | * @param pPlainData: Pointer to the plaintext buffer |
bogdanm | 0:9b334a45a8ff | 2639 | * @retval HAL status |
bogdanm | 0:9b334a45a8ff | 2640 | */ |
bogdanm | 0:9b334a45a8ff | 2641 | HAL_StatusTypeDef HAL_CRYPEx_AESGCM_Decrypt_DMA(CRYP_HandleTypeDef *hcryp, uint8_t *pCypherData, uint16_t Size, uint8_t *pPlainData) |
bogdanm | 0:9b334a45a8ff | 2642 | { |
bogdanm | 0:9b334a45a8ff | 2643 | uint32_t tickstart = 0; |
bogdanm | 0:9b334a45a8ff | 2644 | uint32_t inputaddr; |
bogdanm | 0:9b334a45a8ff | 2645 | uint32_t outputaddr; |
bogdanm | 0:9b334a45a8ff | 2646 | |
bogdanm | 0:9b334a45a8ff | 2647 | if((hcryp->State == HAL_CRYP_STATE_READY) || (hcryp->Phase == HAL_CRYP_PHASE_PROCESS)) |
bogdanm | 0:9b334a45a8ff | 2648 | { |
bogdanm | 0:9b334a45a8ff | 2649 | /* Process Locked */ |
bogdanm | 0:9b334a45a8ff | 2650 | __HAL_LOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 2651 | |
bogdanm | 0:9b334a45a8ff | 2652 | inputaddr = (uint32_t)pCypherData; |
bogdanm | 0:9b334a45a8ff | 2653 | outputaddr = (uint32_t)pPlainData; |
bogdanm | 0:9b334a45a8ff | 2654 | |
bogdanm | 0:9b334a45a8ff | 2655 | /* Change the CRYP peripheral state */ |
bogdanm | 0:9b334a45a8ff | 2656 | hcryp->State = HAL_CRYP_STATE_BUSY; |
bogdanm | 0:9b334a45a8ff | 2657 | |
bogdanm | 0:9b334a45a8ff | 2658 | /* Check if initialization phase has already been performed */ |
bogdanm | 0:9b334a45a8ff | 2659 | if(hcryp->Phase == HAL_CRYP_PHASE_READY) |
bogdanm | 0:9b334a45a8ff | 2660 | { |
bogdanm | 0:9b334a45a8ff | 2661 | /* Set the key */ |
bogdanm | 0:9b334a45a8ff | 2662 | CRYPEx_GCMCCM_SetKey(hcryp, hcryp->Init.pKey, hcryp->Init.KeySize); |
bogdanm | 0:9b334a45a8ff | 2663 | |
bogdanm | 0:9b334a45a8ff | 2664 | /* Set the CRYP peripheral in AES GCM decryption mode */ |
bogdanm | 0:9b334a45a8ff | 2665 | __HAL_CRYP_SET_MODE(hcryp, CRYP_CR_ALGOMODE_AES_GCM_DECRYPT); |
bogdanm | 0:9b334a45a8ff | 2666 | |
bogdanm | 0:9b334a45a8ff | 2667 | /* Set the Initialization Vector */ |
bogdanm | 0:9b334a45a8ff | 2668 | CRYPEx_GCMCCM_SetInitVector(hcryp, hcryp->Init.pInitVect); |
bogdanm | 0:9b334a45a8ff | 2669 | |
bogdanm | 0:9b334a45a8ff | 2670 | /* Enable CRYP to start the init phase */ |
bogdanm | 0:9b334a45a8ff | 2671 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 2672 | |
bogdanm | 0:9b334a45a8ff | 2673 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 2674 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 2675 | |
bogdanm | 0:9b334a45a8ff | 2676 | while((CRYP->CR & CRYP_CR_CRYPEN) == CRYP_CR_CRYPEN) |
bogdanm | 0:9b334a45a8ff | 2677 | { |
bogdanm | 0:9b334a45a8ff | 2678 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 2679 | if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) |
bogdanm | 0:9b334a45a8ff | 2680 | { |
bogdanm | 0:9b334a45a8ff | 2681 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 2682 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 2683 | |
bogdanm | 0:9b334a45a8ff | 2684 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 2685 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 2686 | |
bogdanm | 0:9b334a45a8ff | 2687 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 2688 | } |
bogdanm | 0:9b334a45a8ff | 2689 | } |
bogdanm | 0:9b334a45a8ff | 2690 | |
bogdanm | 0:9b334a45a8ff | 2691 | /* Set the header phase */ |
bogdanm | 0:9b334a45a8ff | 2692 | if(CRYPEx_GCMCCM_SetHeaderPhase(hcryp, hcryp->Init.Header, hcryp->Init.HeaderSize, 1) != HAL_OK) |
bogdanm | 0:9b334a45a8ff | 2693 | { |
bogdanm | 0:9b334a45a8ff | 2694 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 2695 | } |
bogdanm | 0:9b334a45a8ff | 2696 | /* Disable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 2697 | __HAL_CRYP_DISABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 2698 | |
bogdanm | 0:9b334a45a8ff | 2699 | /* Select payload phase once the header phase is performed */ |
bogdanm | 0:9b334a45a8ff | 2700 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_PAYLOAD); |
bogdanm | 0:9b334a45a8ff | 2701 | |
bogdanm | 0:9b334a45a8ff | 2702 | /* Set the phase */ |
bogdanm | 0:9b334a45a8ff | 2703 | hcryp->Phase = HAL_CRYP_PHASE_PROCESS; |
bogdanm | 0:9b334a45a8ff | 2704 | } |
bogdanm | 0:9b334a45a8ff | 2705 | |
bogdanm | 0:9b334a45a8ff | 2706 | /* Set the input and output addresses and start DMA transfer */ |
bogdanm | 0:9b334a45a8ff | 2707 | CRYPEx_GCMCCM_SetDMAConfig(hcryp, inputaddr, Size, outputaddr); |
bogdanm | 0:9b334a45a8ff | 2708 | |
bogdanm | 0:9b334a45a8ff | 2709 | /* Unlock process */ |
bogdanm | 0:9b334a45a8ff | 2710 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 2711 | |
bogdanm | 0:9b334a45a8ff | 2712 | /* Return function status */ |
bogdanm | 0:9b334a45a8ff | 2713 | return HAL_OK; |
bogdanm | 0:9b334a45a8ff | 2714 | } |
bogdanm | 0:9b334a45a8ff | 2715 | else |
bogdanm | 0:9b334a45a8ff | 2716 | { |
bogdanm | 0:9b334a45a8ff | 2717 | return HAL_ERROR; |
bogdanm | 0:9b334a45a8ff | 2718 | } |
bogdanm | 0:9b334a45a8ff | 2719 | } |
bogdanm | 0:9b334a45a8ff | 2720 | |
bogdanm | 0:9b334a45a8ff | 2721 | /** |
bogdanm | 0:9b334a45a8ff | 2722 | * @brief Initializes the CRYP peripheral in AES CCM decryption mode using DMA |
bogdanm | 0:9b334a45a8ff | 2723 | * then decrypted pCypherData. The cypher data are available in pPlainData. |
bogdanm | 0:9b334a45a8ff | 2724 | * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 2725 | * the configuration information for CRYP module |
bogdanm | 0:9b334a45a8ff | 2726 | * @param pCypherData: Pointer to the cyphertext buffer |
bogdanm | 0:9b334a45a8ff | 2727 | * @param Size: Length of the plaintext buffer, must be a multiple of 16 |
bogdanm | 0:9b334a45a8ff | 2728 | * @param pPlainData: Pointer to the plaintext buffer |
bogdanm | 0:9b334a45a8ff | 2729 | * @retval HAL status |
bogdanm | 0:9b334a45a8ff | 2730 | */ |
bogdanm | 0:9b334a45a8ff | 2731 | HAL_StatusTypeDef HAL_CRYPEx_AESCCM_Decrypt_DMA(CRYP_HandleTypeDef *hcryp, uint8_t *pCypherData, uint16_t Size, uint8_t *pPlainData) |
bogdanm | 0:9b334a45a8ff | 2732 | { |
bogdanm | 0:9b334a45a8ff | 2733 | uint32_t tickstart = 0; |
bogdanm | 0:9b334a45a8ff | 2734 | uint32_t inputaddr; |
bogdanm | 0:9b334a45a8ff | 2735 | uint32_t outputaddr; |
bogdanm | 0:9b334a45a8ff | 2736 | uint32_t headersize; |
bogdanm | 0:9b334a45a8ff | 2737 | uint32_t headeraddr; |
bogdanm | 0:9b334a45a8ff | 2738 | uint32_t loopcounter = 0; |
bogdanm | 0:9b334a45a8ff | 2739 | uint32_t bufferidx = 0; |
bogdanm | 0:9b334a45a8ff | 2740 | uint8_t blockb0[16] = {0};/* Block B0 */ |
bogdanm | 0:9b334a45a8ff | 2741 | uint8_t ctr[16] = {0}; /* Counter */ |
bogdanm | 0:9b334a45a8ff | 2742 | uint32_t b0addr = (uint32_t)blockb0; |
bogdanm | 0:9b334a45a8ff | 2743 | |
bogdanm | 0:9b334a45a8ff | 2744 | if((hcryp->State == HAL_CRYP_STATE_READY) || (hcryp->Phase == HAL_CRYP_PHASE_PROCESS)) |
bogdanm | 0:9b334a45a8ff | 2745 | { |
bogdanm | 0:9b334a45a8ff | 2746 | /* Process Locked */ |
bogdanm | 0:9b334a45a8ff | 2747 | __HAL_LOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 2748 | |
bogdanm | 0:9b334a45a8ff | 2749 | inputaddr = (uint32_t)pCypherData; |
bogdanm | 0:9b334a45a8ff | 2750 | outputaddr = (uint32_t)pPlainData; |
bogdanm | 0:9b334a45a8ff | 2751 | |
bogdanm | 0:9b334a45a8ff | 2752 | headersize = hcryp->Init.HeaderSize; |
bogdanm | 0:9b334a45a8ff | 2753 | headeraddr = (uint32_t)hcryp->Init.Header; |
bogdanm | 0:9b334a45a8ff | 2754 | |
bogdanm | 0:9b334a45a8ff | 2755 | hcryp->CrypInCount = Size; |
bogdanm | 0:9b334a45a8ff | 2756 | hcryp->pCrypInBuffPtr = pCypherData; |
bogdanm | 0:9b334a45a8ff | 2757 | hcryp->pCrypOutBuffPtr = pPlainData; |
bogdanm | 0:9b334a45a8ff | 2758 | hcryp->CrypOutCount = Size; |
bogdanm | 0:9b334a45a8ff | 2759 | |
bogdanm | 0:9b334a45a8ff | 2760 | /* Change the CRYP peripheral state */ |
bogdanm | 0:9b334a45a8ff | 2761 | hcryp->State = HAL_CRYP_STATE_BUSY; |
bogdanm | 0:9b334a45a8ff | 2762 | |
bogdanm | 0:9b334a45a8ff | 2763 | /* Check if initialization phase has already been performed */ |
bogdanm | 0:9b334a45a8ff | 2764 | if(hcryp->Phase == HAL_CRYP_PHASE_READY) |
bogdanm | 0:9b334a45a8ff | 2765 | { |
bogdanm | 0:9b334a45a8ff | 2766 | /************************ Formatting the header block *******************/ |
bogdanm | 0:9b334a45a8ff | 2767 | if(headersize != 0) |
bogdanm | 0:9b334a45a8ff | 2768 | { |
bogdanm | 0:9b334a45a8ff | 2769 | /* Check that the associated data (or header) length is lower than 2^16 - 2^8 = 65536 - 256 = 65280 */ |
bogdanm | 0:9b334a45a8ff | 2770 | if(headersize < 65280) |
bogdanm | 0:9b334a45a8ff | 2771 | { |
bogdanm | 0:9b334a45a8ff | 2772 | hcryp->Init.pScratch[bufferidx++] = (uint8_t) ((headersize >> 8) & 0xFF); |
bogdanm | 0:9b334a45a8ff | 2773 | hcryp->Init.pScratch[bufferidx++] = (uint8_t) ((headersize) & 0xFF); |
bogdanm | 0:9b334a45a8ff | 2774 | headersize += 2; |
bogdanm | 0:9b334a45a8ff | 2775 | } |
bogdanm | 0:9b334a45a8ff | 2776 | else |
bogdanm | 0:9b334a45a8ff | 2777 | { |
bogdanm | 0:9b334a45a8ff | 2778 | /* Header is encoded as 0xff || 0xfe || [headersize]32, i.e., six octets */ |
bogdanm | 0:9b334a45a8ff | 2779 | hcryp->Init.pScratch[bufferidx++] = 0xFF; |
bogdanm | 0:9b334a45a8ff | 2780 | hcryp->Init.pScratch[bufferidx++] = 0xFE; |
bogdanm | 0:9b334a45a8ff | 2781 | hcryp->Init.pScratch[bufferidx++] = headersize & 0xff000000; |
bogdanm | 0:9b334a45a8ff | 2782 | hcryp->Init.pScratch[bufferidx++] = headersize & 0x00ff0000; |
bogdanm | 0:9b334a45a8ff | 2783 | hcryp->Init.pScratch[bufferidx++] = headersize & 0x0000ff00; |
bogdanm | 0:9b334a45a8ff | 2784 | hcryp->Init.pScratch[bufferidx++] = headersize & 0x000000ff; |
bogdanm | 0:9b334a45a8ff | 2785 | headersize += 6; |
bogdanm | 0:9b334a45a8ff | 2786 | } |
bogdanm | 0:9b334a45a8ff | 2787 | /* Copy the header buffer in internal buffer "hcryp->Init.pScratch" */ |
bogdanm | 0:9b334a45a8ff | 2788 | for(loopcounter = 0; loopcounter < headersize; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 2789 | { |
bogdanm | 0:9b334a45a8ff | 2790 | hcryp->Init.pScratch[bufferidx++] = hcryp->Init.Header[loopcounter]; |
bogdanm | 0:9b334a45a8ff | 2791 | } |
bogdanm | 0:9b334a45a8ff | 2792 | /* Check if the header size is modulo 16 */ |
bogdanm | 0:9b334a45a8ff | 2793 | if ((headersize % 16) != 0) |
bogdanm | 0:9b334a45a8ff | 2794 | { |
bogdanm | 0:9b334a45a8ff | 2795 | /* Padd the header buffer with 0s till the hcryp->Init.pScratch length is modulo 16 */ |
bogdanm | 0:9b334a45a8ff | 2796 | for(loopcounter = headersize; loopcounter <= ((headersize/16) + 1) * 16; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 2797 | { |
bogdanm | 0:9b334a45a8ff | 2798 | hcryp->Init.pScratch[loopcounter] = 0; |
bogdanm | 0:9b334a45a8ff | 2799 | } |
bogdanm | 0:9b334a45a8ff | 2800 | /* Set the header size to modulo 16 */ |
bogdanm | 0:9b334a45a8ff | 2801 | headersize = ((headersize/16) + 1) * 16; |
bogdanm | 0:9b334a45a8ff | 2802 | } |
bogdanm | 0:9b334a45a8ff | 2803 | /* Set the pointer headeraddr to hcryp->Init.pScratch */ |
bogdanm | 0:9b334a45a8ff | 2804 | headeraddr = (uint32_t)hcryp->Init.pScratch; |
bogdanm | 0:9b334a45a8ff | 2805 | } |
bogdanm | 0:9b334a45a8ff | 2806 | /*********************** Formatting the block B0 ************************/ |
bogdanm | 0:9b334a45a8ff | 2807 | if(headersize != 0) |
bogdanm | 0:9b334a45a8ff | 2808 | { |
bogdanm | 0:9b334a45a8ff | 2809 | blockb0[0] = 0x40; |
bogdanm | 0:9b334a45a8ff | 2810 | } |
bogdanm | 0:9b334a45a8ff | 2811 | /* Flags byte */ |
bogdanm | 0:9b334a45a8ff | 2812 | /* blockb0[0] |= 0u | (((( (uint8_t) hcryp->Init.TagSize - 2) / 2) & 0x07 ) << 3 ) | ( ( (uint8_t) (15 - hcryp->Init.IVSize) - 1) & 0x07) */ |
bogdanm | 0:9b334a45a8ff | 2813 | blockb0[0] |= (uint8_t)((uint8_t)((uint8_t)(((uint8_t)(hcryp->Init.TagSize - (uint8_t)(2))) >> 1) & (uint8_t)0x07 ) << 3); |
bogdanm | 0:9b334a45a8ff | 2814 | blockb0[0] |= (uint8_t)((uint8_t)((uint8_t)((uint8_t)(15) - hcryp->Init.IVSize) - (uint8_t)1) & (uint8_t)0x07); |
bogdanm | 0:9b334a45a8ff | 2815 | |
bogdanm | 0:9b334a45a8ff | 2816 | for (loopcounter = 0; loopcounter < hcryp->Init.IVSize; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 2817 | { |
bogdanm | 0:9b334a45a8ff | 2818 | blockb0[loopcounter+1] = hcryp->Init.pInitVect[loopcounter]; |
bogdanm | 0:9b334a45a8ff | 2819 | } |
bogdanm | 0:9b334a45a8ff | 2820 | for ( ; loopcounter < 13; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 2821 | { |
bogdanm | 0:9b334a45a8ff | 2822 | blockb0[loopcounter+1] = 0; |
bogdanm | 0:9b334a45a8ff | 2823 | } |
bogdanm | 0:9b334a45a8ff | 2824 | |
bogdanm | 0:9b334a45a8ff | 2825 | blockb0[14] = (Size >> 8); |
bogdanm | 0:9b334a45a8ff | 2826 | blockb0[15] = (Size & 0xFF); |
bogdanm | 0:9b334a45a8ff | 2827 | |
bogdanm | 0:9b334a45a8ff | 2828 | /************************* Formatting the initial counter ***************/ |
bogdanm | 0:9b334a45a8ff | 2829 | /* Byte 0: |
bogdanm | 0:9b334a45a8ff | 2830 | Bits 7 and 6 are reserved and shall be set to 0 |
bogdanm | 0:9b334a45a8ff | 2831 | Bits 3, 4, and 5 shall also be set to 0, to ensure that all the counter |
bogdanm | 0:9b334a45a8ff | 2832 | blocks are distinct from B0 |
bogdanm | 0:9b334a45a8ff | 2833 | Bits 0, 1, and 2 contain the same encoding of q as in B0 |
bogdanm | 0:9b334a45a8ff | 2834 | */ |
bogdanm | 0:9b334a45a8ff | 2835 | ctr[0] = blockb0[0] & 0x07; |
bogdanm | 0:9b334a45a8ff | 2836 | /* byte 1 to NonceSize is the IV (Nonce) */ |
bogdanm | 0:9b334a45a8ff | 2837 | for(loopcounter = 1; loopcounter < hcryp->Init.IVSize + 1; loopcounter++) |
bogdanm | 0:9b334a45a8ff | 2838 | { |
bogdanm | 0:9b334a45a8ff | 2839 | ctr[loopcounter] = blockb0[loopcounter]; |
bogdanm | 0:9b334a45a8ff | 2840 | } |
bogdanm | 0:9b334a45a8ff | 2841 | /* Set the LSB to 1 */ |
bogdanm | 0:9b334a45a8ff | 2842 | ctr[15] |= 0x01; |
bogdanm | 0:9b334a45a8ff | 2843 | |
bogdanm | 0:9b334a45a8ff | 2844 | /* Set the key */ |
bogdanm | 0:9b334a45a8ff | 2845 | CRYPEx_GCMCCM_SetKey(hcryp, hcryp->Init.pKey, hcryp->Init.KeySize); |
bogdanm | 0:9b334a45a8ff | 2846 | |
bogdanm | 0:9b334a45a8ff | 2847 | /* Set the CRYP peripheral in AES CCM mode */ |
bogdanm | 0:9b334a45a8ff | 2848 | __HAL_CRYP_SET_MODE(hcryp, CRYP_CR_ALGOMODE_AES_CCM_DECRYPT); |
bogdanm | 0:9b334a45a8ff | 2849 | |
bogdanm | 0:9b334a45a8ff | 2850 | /* Set the Initialization Vector */ |
bogdanm | 0:9b334a45a8ff | 2851 | CRYPEx_GCMCCM_SetInitVector(hcryp, ctr); |
bogdanm | 0:9b334a45a8ff | 2852 | |
bogdanm | 0:9b334a45a8ff | 2853 | /* Select init phase */ |
bogdanm | 0:9b334a45a8ff | 2854 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_INIT); |
bogdanm | 0:9b334a45a8ff | 2855 | |
bogdanm | 0:9b334a45a8ff | 2856 | b0addr = (uint32_t)blockb0; |
bogdanm | 0:9b334a45a8ff | 2857 | /* Write the blockb0 block in the IN FIFO */ |
bogdanm | 0:9b334a45a8ff | 2858 | hcryp->Instance->DR = *(uint32_t*)(b0addr); |
bogdanm | 0:9b334a45a8ff | 2859 | b0addr+=4; |
bogdanm | 0:9b334a45a8ff | 2860 | hcryp->Instance->DR = *(uint32_t*)(b0addr); |
bogdanm | 0:9b334a45a8ff | 2861 | b0addr+=4; |
bogdanm | 0:9b334a45a8ff | 2862 | hcryp->Instance->DR = *(uint32_t*)(b0addr); |
bogdanm | 0:9b334a45a8ff | 2863 | b0addr+=4; |
bogdanm | 0:9b334a45a8ff | 2864 | hcryp->Instance->DR = *(uint32_t*)(b0addr); |
bogdanm | 0:9b334a45a8ff | 2865 | |
bogdanm | 0:9b334a45a8ff | 2866 | /* Enable the CRYP peripheral */ |
bogdanm | 0:9b334a45a8ff | 2867 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 2868 | |
bogdanm | 0:9b334a45a8ff | 2869 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 2870 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 2871 | |
bogdanm | 0:9b334a45a8ff | 2872 | while((CRYP->CR & CRYP_CR_CRYPEN) == CRYP_CR_CRYPEN) |
bogdanm | 0:9b334a45a8ff | 2873 | { |
bogdanm | 0:9b334a45a8ff | 2874 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 2875 | |
bogdanm | 0:9b334a45a8ff | 2876 | if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) |
bogdanm | 0:9b334a45a8ff | 2877 | { |
bogdanm | 0:9b334a45a8ff | 2878 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 2879 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 2880 | |
bogdanm | 0:9b334a45a8ff | 2881 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 2882 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 2883 | |
bogdanm | 0:9b334a45a8ff | 2884 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 2885 | |
bogdanm | 0:9b334a45a8ff | 2886 | } |
bogdanm | 0:9b334a45a8ff | 2887 | } |
bogdanm | 0:9b334a45a8ff | 2888 | /***************************** Header phase *****************************/ |
bogdanm | 0:9b334a45a8ff | 2889 | if(headersize != 0) |
bogdanm | 0:9b334a45a8ff | 2890 | { |
bogdanm | 0:9b334a45a8ff | 2891 | /* Select header phase */ |
bogdanm | 0:9b334a45a8ff | 2892 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_HEADER); |
bogdanm | 0:9b334a45a8ff | 2893 | |
bogdanm | 0:9b334a45a8ff | 2894 | /* Enable Crypto processor */ |
bogdanm | 0:9b334a45a8ff | 2895 | __HAL_CRYP_ENABLE(hcryp); |
bogdanm | 0:9b334a45a8ff | 2896 | |
bogdanm | 0:9b334a45a8ff | 2897 | for(loopcounter = 0; (loopcounter < headersize); loopcounter+=16) |
bogdanm | 0:9b334a45a8ff | 2898 | { |
bogdanm | 0:9b334a45a8ff | 2899 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 2900 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 2901 | |
bogdanm | 0:9b334a45a8ff | 2902 | while(HAL_IS_BIT_CLR(hcryp->Instance->SR, CRYP_FLAG_IFEM)) |
bogdanm | 0:9b334a45a8ff | 2903 | { |
bogdanm | 0:9b334a45a8ff | 2904 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 2905 | if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) |
bogdanm | 0:9b334a45a8ff | 2906 | { |
bogdanm | 0:9b334a45a8ff | 2907 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 2908 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 2909 | |
bogdanm | 0:9b334a45a8ff | 2910 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 2911 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 2912 | |
bogdanm | 0:9b334a45a8ff | 2913 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 2914 | } |
bogdanm | 0:9b334a45a8ff | 2915 | } |
bogdanm | 0:9b334a45a8ff | 2916 | /* Write the header block in the IN FIFO */ |
bogdanm | 0:9b334a45a8ff | 2917 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 2918 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 2919 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 2920 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 2921 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 2922 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 2923 | hcryp->Instance->DR = *(uint32_t*)(headeraddr); |
bogdanm | 0:9b334a45a8ff | 2924 | headeraddr+=4; |
bogdanm | 0:9b334a45a8ff | 2925 | } |
bogdanm | 0:9b334a45a8ff | 2926 | |
bogdanm | 0:9b334a45a8ff | 2927 | /* Get tick */ |
bogdanm | 0:9b334a45a8ff | 2928 | tickstart = HAL_GetTick(); |
bogdanm | 0:9b334a45a8ff | 2929 | |
bogdanm | 0:9b334a45a8ff | 2930 | while((hcryp->Instance->SR & CRYP_FLAG_BUSY) == CRYP_FLAG_BUSY) |
bogdanm | 0:9b334a45a8ff | 2931 | { |
bogdanm | 0:9b334a45a8ff | 2932 | /* Check for the Timeout */ |
bogdanm | 0:9b334a45a8ff | 2933 | if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) |
bogdanm | 0:9b334a45a8ff | 2934 | { |
bogdanm | 0:9b334a45a8ff | 2935 | /* Change state */ |
bogdanm | 0:9b334a45a8ff | 2936 | hcryp->State = HAL_CRYP_STATE_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 2937 | |
bogdanm | 0:9b334a45a8ff | 2938 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 2939 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 2940 | |
bogdanm | 0:9b334a45a8ff | 2941 | return HAL_TIMEOUT; |
bogdanm | 0:9b334a45a8ff | 2942 | } |
bogdanm | 0:9b334a45a8ff | 2943 | } |
bogdanm | 0:9b334a45a8ff | 2944 | } |
bogdanm | 0:9b334a45a8ff | 2945 | /* Save formatted counter into the scratch buffer pScratch */ |
bogdanm | 0:9b334a45a8ff | 2946 | for(loopcounter = 0; (loopcounter < 16); loopcounter++) |
bogdanm | 0:9b334a45a8ff | 2947 | { |
bogdanm | 0:9b334a45a8ff | 2948 | hcryp->Init.pScratch[loopcounter] = ctr[loopcounter]; |
bogdanm | 0:9b334a45a8ff | 2949 | } |
bogdanm | 0:9b334a45a8ff | 2950 | /* Reset bit 0 */ |
bogdanm | 0:9b334a45a8ff | 2951 | hcryp->Init.pScratch[15] &= 0xfe; |
bogdanm | 0:9b334a45a8ff | 2952 | /* Select payload phase once the header phase is performed */ |
bogdanm | 0:9b334a45a8ff | 2953 | __HAL_CRYP_SET_PHASE(hcryp, CRYP_PHASE_PAYLOAD); |
bogdanm | 0:9b334a45a8ff | 2954 | |
bogdanm | 0:9b334a45a8ff | 2955 | /* Flush FIFO */ |
bogdanm | 0:9b334a45a8ff | 2956 | __HAL_CRYP_FIFO_FLUSH(hcryp); |
bogdanm | 0:9b334a45a8ff | 2957 | |
bogdanm | 0:9b334a45a8ff | 2958 | /* Set the phase */ |
bogdanm | 0:9b334a45a8ff | 2959 | hcryp->Phase = HAL_CRYP_PHASE_PROCESS; |
bogdanm | 0:9b334a45a8ff | 2960 | } |
bogdanm | 0:9b334a45a8ff | 2961 | /* Set the input and output addresses and start DMA transfer */ |
bogdanm | 0:9b334a45a8ff | 2962 | CRYPEx_GCMCCM_SetDMAConfig(hcryp, inputaddr, Size, outputaddr); |
bogdanm | 0:9b334a45a8ff | 2963 | |
bogdanm | 0:9b334a45a8ff | 2964 | /* Unlock process */ |
bogdanm | 0:9b334a45a8ff | 2965 | __HAL_UNLOCK(hcryp); |
bogdanm | 0:9b334a45a8ff | 2966 | |
bogdanm | 0:9b334a45a8ff | 2967 | /* Return function status */ |
bogdanm | 0:9b334a45a8ff | 2968 | return HAL_OK; |
bogdanm | 0:9b334a45a8ff | 2969 | } |
bogdanm | 0:9b334a45a8ff | 2970 | else |
bogdanm | 0:9b334a45a8ff | 2971 | { |
bogdanm | 0:9b334a45a8ff | 2972 | return HAL_ERROR; |
bogdanm | 0:9b334a45a8ff | 2973 | } |
bogdanm | 0:9b334a45a8ff | 2974 | } |
bogdanm | 0:9b334a45a8ff | 2975 | |
bogdanm | 0:9b334a45a8ff | 2976 | /** |
bogdanm | 0:9b334a45a8ff | 2977 | * @} |
bogdanm | 0:9b334a45a8ff | 2978 | */ |
bogdanm | 0:9b334a45a8ff | 2979 | |
bogdanm | 0:9b334a45a8ff | 2980 | /** @defgroup CRYPEx_Exported_Functions_Group2 CRYPEx IRQ handler management |
bogdanm | 0:9b334a45a8ff | 2981 | * @brief CRYPEx IRQ handler. |
bogdanm | 0:9b334a45a8ff | 2982 | * |
bogdanm | 0:9b334a45a8ff | 2983 | @verbatim |
bogdanm | 0:9b334a45a8ff | 2984 | ============================================================================== |
bogdanm | 0:9b334a45a8ff | 2985 | ##### CRYPEx IRQ handler management ##### |
bogdanm | 0:9b334a45a8ff | 2986 | ============================================================================== |
bogdanm | 0:9b334a45a8ff | 2987 | [..] This section provides CRYPEx IRQ handler function. |
bogdanm | 0:9b334a45a8ff | 2988 | |
bogdanm | 0:9b334a45a8ff | 2989 | @endverbatim |
bogdanm | 0:9b334a45a8ff | 2990 | * @{ |
bogdanm | 0:9b334a45a8ff | 2991 | */ |
bogdanm | 0:9b334a45a8ff | 2992 | |
bogdanm | 0:9b334a45a8ff | 2993 | /** |
bogdanm | 0:9b334a45a8ff | 2994 | * @brief This function handles CRYPEx interrupt request. |
bogdanm | 0:9b334a45a8ff | 2995 | * @param hcryp: pointer to a CRYPEx_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 2996 | * the configuration information for CRYP module |
bogdanm | 0:9b334a45a8ff | 2997 | * @retval None |
bogdanm | 0:9b334a45a8ff | 2998 | */ |
bogdanm | 0:9b334a45a8ff | 2999 | |
bogdanm | 0:9b334a45a8ff | 3000 | void HAL_CRYPEx_GCMCCM_IRQHandler(CRYP_HandleTypeDef *hcryp) |
bogdanm | 0:9b334a45a8ff | 3001 | { |
bogdanm | 0:9b334a45a8ff | 3002 | switch(CRYP->CR & CRYP_CR_ALGOMODE_DIRECTION) |
bogdanm | 0:9b334a45a8ff | 3003 | { |
bogdanm | 0:9b334a45a8ff | 3004 | case CRYP_CR_ALGOMODE_AES_GCM_ENCRYPT: |
bogdanm | 0:9b334a45a8ff | 3005 | HAL_CRYPEx_AESGCM_Encrypt_IT(hcryp, NULL, 0, NULL); |
bogdanm | 0:9b334a45a8ff | 3006 | break; |
bogdanm | 0:9b334a45a8ff | 3007 | |
bogdanm | 0:9b334a45a8ff | 3008 | case CRYP_CR_ALGOMODE_AES_GCM_DECRYPT: |
bogdanm | 0:9b334a45a8ff | 3009 | HAL_CRYPEx_AESGCM_Decrypt_IT(hcryp, NULL, 0, NULL); |
bogdanm | 0:9b334a45a8ff | 3010 | break; |
bogdanm | 0:9b334a45a8ff | 3011 | |
bogdanm | 0:9b334a45a8ff | 3012 | case CRYP_CR_ALGOMODE_AES_CCM_ENCRYPT: |
bogdanm | 0:9b334a45a8ff | 3013 | HAL_CRYPEx_AESCCM_Encrypt_IT(hcryp, NULL, 0, NULL); |
bogdanm | 0:9b334a45a8ff | 3014 | break; |
bogdanm | 0:9b334a45a8ff | 3015 | |
bogdanm | 0:9b334a45a8ff | 3016 | case CRYP_CR_ALGOMODE_AES_CCM_DECRYPT: |
bogdanm | 0:9b334a45a8ff | 3017 | HAL_CRYPEx_AESCCM_Decrypt_IT(hcryp, NULL, 0, NULL); |
bogdanm | 0:9b334a45a8ff | 3018 | break; |
bogdanm | 0:9b334a45a8ff | 3019 | |
bogdanm | 0:9b334a45a8ff | 3020 | default: |
bogdanm | 0:9b334a45a8ff | 3021 | break; |
bogdanm | 0:9b334a45a8ff | 3022 | } |
bogdanm | 0:9b334a45a8ff | 3023 | } |
bogdanm | 0:9b334a45a8ff | 3024 | |
bogdanm | 0:9b334a45a8ff | 3025 | /** |
bogdanm | 0:9b334a45a8ff | 3026 | * @} |
bogdanm | 0:9b334a45a8ff | 3027 | */ |
bogdanm | 0:9b334a45a8ff | 3028 | |
bogdanm | 0:9b334a45a8ff | 3029 | /** |
bogdanm | 0:9b334a45a8ff | 3030 | * @} |
bogdanm | 0:9b334a45a8ff | 3031 | */ |
mbed_official | 19:112740acecfa | 3032 | #endif /* STM32F437xx || STM32F439xx || STM32F479xx */ |
bogdanm | 0:9b334a45a8ff | 3033 | |
bogdanm | 0:9b334a45a8ff | 3034 | #endif /* HAL_CRYP_MODULE_ENABLED */ |
bogdanm | 0:9b334a45a8ff | 3035 | /** |
bogdanm | 0:9b334a45a8ff | 3036 | * @} |
bogdanm | 0:9b334a45a8ff | 3037 | */ |
bogdanm | 0:9b334a45a8ff | 3038 | |
bogdanm | 0:9b334a45a8ff | 3039 | /** |
bogdanm | 0:9b334a45a8ff | 3040 | * @} |
bogdanm | 0:9b334a45a8ff | 3041 | */ |
bogdanm | 0:9b334a45a8ff | 3042 | |
bogdanm | 0:9b334a45a8ff | 3043 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |