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Diff: targets/cmsis/TARGET_STM/TARGET_NUCLEO_F401RE/stm32f4xx_hal_hash_ex.c
- Revision:
- 87:085cde657901
- Child:
- 106:ced8cbb51063
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/cmsis/TARGET_STM/TARGET_NUCLEO_F401RE/stm32f4xx_hal_hash_ex.c Sat Feb 08 19:45:06 2014 +0000
@@ -0,0 +1,1598 @@
+/**
+ ******************************************************************************
+ * @file stm32f4xx_hal_hash_ex.c
+ * @author MCD Application Team
+ * @version V1.0.0RC2
+ * @date 04-February-2014
+ * @brief HASH HAL Extension module driver.
+ * This file provides firmware functions to manage the following
+ * functionalities of HASH peripheral:
+ * + Extended HASH processing functions based on SHA224 Algorithm
+ * + Extended HASH processing functions based on SHA256 Algorithm
+ *
+ @verbatim
+ ==============================================================================
+ ##### How to use this driver #####
+ ==============================================================================
+ [..]
+ The HASH HAL driver can be used as follows:
+ (#)Initialize the HASH low level resources by implementing the HAL_HASH_MspInit():
+ (##) Enable the HASH interface clock using __HASH_CLK_ENABLE()
+ (##) In case of using processing APIs based on interrupts (e.g. HAL_HMACEx_SHA224_Start())
+ (+++) Configure the HASH interrupt priority using HAL_NVIC_SetPriority()
+ (+++) Enable the HASH IRQ handler using HAL_NVIC_EnableIRQ()
+ (+++) In HASH IRQ handler, call HAL_HASH_IRQHandler()
+ (##) In case of using DMA to control data transfer (e.g. HAL_HMACEx_SH224_Start_DMA())
+ (+++) Enable the DMAx interface clock using __DMAx_CLK_ENABLE()
+ (+++) Configure and enable one DMA stream one for managing data transfer from
+ memory to peripheral (input stream). Managing data transfer from
+ peripheral to memory can be performed only using CPU
+ (+++) Associate the initialized DMA handle to the HASH DMA handle
+ using __HAL_LINKDMA()
+ (+++) Configure the priority and enable the NVIC for the transfer complete
+ interrupt on the DMA Stream: HAL_NVIC_SetPriority() and HAL_NVIC_EnableIRQ()
+ (#)Initialize the HASH HAL using HAL_HASH_Init(). This function configures mainly:
+ (##) The data type: 1-bit, 8-bit, 16-bit and 32-bit.
+ (##) For HMAC, the encryption key.
+ (##) For HMAC, the key size used for encryption.
+ (#)Three processing functions are available:
+ (##) Polling mode: processing APIs are blocking functions
+ i.e. they process the data and wait till the digest computation is finished
+ e.g. HAL_HASHEx_SHA224_Start()
+ (##) Interrupt mode: encryption and decryption APIs are not blocking functions
+ i.e. they process the data under interrupt
+ e.g. HAL_HASHEx_SHA224_Start_IT()
+ (##) DMA mode: processing APIs are not blocking functions and the CPU is
+ not used for data transfer i.e. the data transfer is ensured by DMA
+ e.g. HAL_HASHEx_SHA224_Start_DMA()
+ (#)When the processing function is called at first time after HAL_HASH_Init()
+ the HASH peripheral is initialized and processes the buffer in input.
+ After that, the digest computation is started.
+ When processing multi-buffer use the accumulate function to write the
+ data in the peripheral without starting the digest computation. In last
+ buffer use the start function to input the last buffer ans start the digest
+ computation.
+ (##) e.g. HAL_HASHEx_SHA224_Accumulate() : write 1st data buffer in the peripheral without starting the digest computation
+ (##) write (n-1)th data buffer in the peripheral without starting the digest computation
+ (##) HAL_HASHEx_SHA224_Start() : write (n)th data buffer in the peripheral and start the digest computation
+ (#)In HMAC mode, there is no Accumulate API. Only Start API is available.
+ (#)In case of using DMA, call the DMA start processing e.g. HAL_HASHEx_SHA224_Start_DMA().
+ After that, call the finish function in order to get the digest value
+ e.g. HAL_HASHEx_SHA224_Finish()
+ (#)Call HAL_HASH_DeInit() to deinitialize the HASH peripheral.
+
+ @endverbatim
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f4xx_hal.h"
+
+/** @addtogroup STM32F4xx_HAL_Driver
+ * @{
+ */
+
+/** @defgroup HASHEx
+ * @brief HASH Extension HAL module driver.
+ * @{
+ */
+
+#ifdef HAL_HASH_MODULE_ENABLED
+
+#if defined(STM32F437xx) || defined(STM32F439xx)
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+static void HASHEx_DMAXferCplt(DMA_HandleTypeDef *hdma);
+static void HASHEx_WriteData(uint8_t *pInBuffer, uint32_t Size);
+static void HASHEx_GetDigest(uint8_t *pMsgDigest, uint8_t Size);
+static void HASHEx_DMAError(DMA_HandleTypeDef *hdma);
+
+/* Private functions ---------------------------------------------------------*/
+
+/** @defgroup HASHEx_Private_Functions
+ * @{
+ */
+
+/** @defgroup HASHEx_Group1 HASH processing functions
+ * @brief processing functions using polling mode
+ *
+@verbatim
+ ===============================================================================
+ ##### HASH processing using polling mode functions #####
+ ===============================================================================
+ [..] This section provides functions allowing to calculate in polling mode
+ the hash value using one of the following algorithms:
+ (+) SHA224
+ (+) SHA256
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Initializes the HASH peripheral in SHA224 mode
+ * then processes pInBuffer. The digest is available in pOutBuffer
+ * @param hhash: HASH handle
+ * @param pInBuffer: Pointer to the input buffer (buffer to be hashed).
+ * @param pOutBuffer: Pointer to the output buffer (hashed buffer).
+ * @param Size: Length of the input buffer in bytes.
+ * If the Size is not multiple of 64 bytes, the padding is managed by hardware.
+ * @param pOutBuffer: Pointer to the computed digest. Its size must be 28 bytes.
+ * @param Timeout: Specify Timeout value
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_HASHEx_SHA224_Start(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, uint8_t* pOutBuffer, uint32_t Timeout)
+{
+ uint32_t timeout = 0;
+
+ /* Process Locked */
+ __HAL_LOCK(hhash);
+
+ /* Change the HASH state */
+ hhash->State = HAL_HASH_STATE_BUSY;
+
+ /* Check if initialization phase has already been performed */
+ if(hhash->Phase == HAL_HASH_PHASE_READY)
+ {
+ /* Select the SHA224 mode and reset the HASH processor core, so that the HASH will be ready to compute
+ the message digest of a new message */
+ HASH->CR |= HASH_AlgoSelection_SHA224 | HASH_CR_INIT;
+ }
+
+ /* Set the phase */
+ hhash->Phase = HAL_HASH_PHASE_PROCESS;
+
+ /* Configure the number of valid bits in last word of the message */
+ __HAL_HASH_SET_NBVALIDBITS(Size);
+
+ /* Write input buffer in data register */
+ HASHEx_WriteData(pInBuffer, Size);
+
+ /* Start the digest calculation */
+ __HAL_HASH_START_DIGEST();
+
+ /* Get timeout */
+ timeout = HAL_GetTick() + Timeout;
+
+ while((HASH->SR & HASH_FLAG_BUSY) == HASH_FLAG_BUSY)
+ {
+ /* Check for the Timeout */
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if(HAL_GetTick() >= timeout)
+ {
+ /* Change state */
+ hhash->State = HAL_HASH_STATE_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hhash);
+
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+
+ /* Read the message digest */
+ HASHEx_GetDigest(pOutBuffer, 28);
+
+ /* Change the HASH state */
+ hhash->State = HAL_HASH_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hhash);
+
+ /* Return function status */
+ return HAL_OK;
+}
+
+/**
+ * @brief Initializes the HASH peripheral in SHA256 mode then processes pInBuffer.
+ The digest is available in pOutBuffer.
+ * @param hhash: HASH handle
+ * @param pInBuffer: Pointer to the input buffer (buffer to be hashed).
+ * @param pOutBuffer: Pointer to the output buffer (hashed buffer).
+ * @param Size: Length of the input buffer in bytes.
+ * If the Size is not multiple of 64 bytes, the padding is managed by hardware.
+ * @param pOutBuffer: Pointer to the computed digest. Its size must be 32 bytes.
+ * @param Timeout: Specify Timeout value
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_HASHEx_SHA256_Start(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, uint8_t* pOutBuffer, uint32_t Timeout)
+{
+ uint32_t timeout = 0;
+
+ /* Process Locked */
+ __HAL_LOCK(hhash);
+
+ /* Change the HASH state */
+ hhash->State = HAL_HASH_STATE_BUSY;
+
+ /* Check if initialization phase has already been performed */
+ if(hhash->Phase == HAL_HASH_PHASE_READY)
+ {
+ /* Select the SHA256 mode and reset the HASH processor core, so that the HASH will be ready to compute
+ the message digest of a new message */
+ HASH->CR |= HASH_AlgoSelection_SHA256 | HASH_CR_INIT;
+ }
+
+ /* Set the phase */
+ hhash->Phase = HAL_HASH_PHASE_PROCESS;
+
+ /* Configure the number of valid bits in last word of the message */
+ __HAL_HASH_SET_NBVALIDBITS(Size);
+
+ /* Write input buffer in data register */
+ HASHEx_WriteData(pInBuffer, Size);
+
+ /* Start the digest calculation */
+ __HAL_HASH_START_DIGEST();
+
+ /* Get timeout */
+ timeout = HAL_GetTick() + Timeout;
+
+ while((HASH->SR & HASH_FLAG_BUSY) == HASH_FLAG_BUSY)
+ {
+ /* Check for the Timeout */
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if(HAL_GetTick() >= timeout)
+ {
+ /* Change state */
+ hhash->State = HAL_HASH_STATE_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hhash);
+
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+
+ /* Read the message digest */
+ HASHEx_GetDigest(pOutBuffer, 32);
+
+ /* Change the HASH state */
+ hhash->State = HAL_HASH_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hhash);
+
+ /* Return function status */
+ return HAL_OK;
+}
+
+
+/**
+ * @brief Initializes the HASH peripheral in SHA224 mode
+ * then processes pInBuffer. The digest is available in pOutBuffer
+ * @param hhash: HASH handle
+ * @param pInBuffer: Pointer to the input buffer (buffer to be hashed).
+ * @param Size: Length of the input buffer in bytes.
+ * If the Size is not multiple of 64 bytes, the padding is managed by hardware.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_HASHEx_SHA224_Accumulate(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size)
+{
+ /* Process Locked */
+ __HAL_LOCK(hhash);
+
+ /* Change the HASH state */
+ hhash->State = HAL_HASH_STATE_BUSY;
+
+ /* Check if initialization phase has already been performed */
+ if(hhash->Phase == HAL_HASH_PHASE_READY)
+ {
+ /* Select the SHA224 mode and reset the HASH processor core, so that the HASH will be ready to compute
+ the message digest of a new message */
+ HASH->CR |= HASH_AlgoSelection_SHA224 | HASH_CR_INIT;
+ }
+
+ /* Set the phase */
+ hhash->Phase = HAL_HASH_PHASE_PROCESS;
+
+ /* Configure the number of valid bits in last word of the message */
+ __HAL_HASH_SET_NBVALIDBITS(Size);
+
+ /* Write input buffer in data register */
+ HASHEx_WriteData(pInBuffer, Size);
+
+ /* Change the HASH state */
+ hhash->State = HAL_HASH_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hhash);
+
+ /* Return function status */
+ return HAL_OK;
+}
+
+
+/**
+ * @brief Initializes the HASH peripheral in SHA256 mode then processes pInBuffer.
+ The digest is available in pOutBuffer.
+ * @param hhash: HASH handle
+ * @param pInBuffer: Pointer to the input buffer (buffer to be hashed).
+ * @param Size: Length of the input buffer in bytes.
+ * If the Size is not multiple of 64 bytes, the padding is managed by hardware.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_HASHEx_SHA256_Accumulate(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size)
+{
+ /* Process Locked */
+ __HAL_LOCK(hhash);
+
+ /* Change the HASH state */
+ hhash->State = HAL_HASH_STATE_BUSY;
+
+ /* Check if initialization phase has already been performed */
+ if(hhash->Phase == HAL_HASH_PHASE_READY)
+ {
+ /* Select the SHA256 mode and reset the HASH processor core, so that the HASH will be ready to compute
+ the message digest of a new message */
+ HASH->CR |= HASH_AlgoSelection_SHA256 | HASH_CR_INIT;
+ }
+
+ /* Set the phase */
+ hhash->Phase = HAL_HASH_PHASE_PROCESS;
+
+ /* Configure the number of valid bits in last word of the message */
+ __HAL_HASH_SET_NBVALIDBITS(Size);
+
+ /* Write input buffer in data register */
+ HASHEx_WriteData(pInBuffer, Size);
+
+ /* Change the HASH state */
+ hhash->State = HAL_HASH_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hhash);
+
+ /* Return function status */
+ return HAL_OK;
+}
+
+
+/**
+ * @}
+ */
+
+/** @defgroup HASHEx_Group2 HMAC processing functions using polling mode
+ * @brief HMAC processing functions using polling mode .
+ *
+@verbatim
+ ===============================================================================
+ ##### HMAC processing using polling mode functions #####
+ ===============================================================================
+ [..] This section provides functions allowing to calculate in polling mode
+ the HMAC value using one of the following algorithms:
+ (+) SHA224
+ (+) SHA256
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Initializes the HASH peripheral in HMAC SHA224 mode
+ * then processes pInBuffer. The digest is available in pOutBuffer.
+ * @param hhash: HASH handle
+ * @param pInBuffer: Pointer to the input buffer (buffer to be hashed).
+ * @param pOutBuffer: Pointer to the output buffer (hashed buffer).
+ * @param Size: Length of the input buffer in bytes.
+ * If the Size is not multiple of 64 bytes, the padding is managed by hardware.
+ * @param pOutBuffer: Pointer to the computed digest. Its size must be 20 bytes.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_HMACEx_SHA224_Start(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, uint8_t* pOutBuffer, uint32_t Timeout)
+{
+ uint32_t timeout = 0;
+
+ /* Process Locked */
+ __HAL_LOCK(hhash);
+
+ /* Change the HASH state */
+ hhash->State = HAL_HASH_STATE_BUSY;
+
+ /* Check if initialization phase has already been performed */
+ if(hhash->Phase == HAL_HASH_PHASE_READY)
+ {
+ /* Check if key size is greater than 64 bytes */
+ if(hhash->Init.KeySize > 64)
+ {
+ /* Select the HMAC SHA224 mode */
+ HASH->CR |= (HASH_AlgoSelection_SHA224 | HASH_AlgoMode_HMAC | HASH_HMACKeyType_LongKey | HASH_CR_INIT);
+ }
+ else
+ {
+ /* Select the HMAC SHA224 mode */
+ HASH->CR |= (HASH_AlgoSelection_SHA224 | HASH_AlgoMode_HMAC | HASH_CR_INIT);
+ }
+ }
+
+ /* Set the phase */
+ hhash->Phase = HAL_HASH_PHASE_PROCESS;
+
+ /************************** STEP 1 ******************************************/
+ /* Configure the number of valid bits in last word of the message */
+ __HAL_HASH_SET_NBVALIDBITS(hhash->Init.KeySize);
+
+ /* Write input buffer in data register */
+ HASHEx_WriteData(hhash->Init.pKey, hhash->Init.KeySize);
+
+ /* Start the digest calculation */
+ __HAL_HASH_START_DIGEST();
+
+ /* Get timeout */
+ timeout = HAL_GetTick() + Timeout;
+
+ while((HASH->SR & HASH_FLAG_BUSY) == HASH_FLAG_BUSY)
+ {
+ /* Check for the Timeout */
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if(HAL_GetTick() >= timeout)
+ {
+ /* Change state */
+ hhash->State = HAL_HASH_STATE_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hhash);
+
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ /************************** STEP 2 ******************************************/
+ /* Configure the number of valid bits in last word of the message */
+ __HAL_HASH_SET_NBVALIDBITS(Size);
+
+ /* Write input buffer in data register */
+ HASHEx_WriteData(pInBuffer, Size);
+
+ /* Start the digest calculation */
+ __HAL_HASH_START_DIGEST();
+
+ /* Get timeout */
+ timeout = HAL_GetTick() + Timeout;
+
+ while((HASH->SR & HASH_FLAG_BUSY) == HASH_FLAG_BUSY)
+ {
+ /* Check for the Timeout */
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if(HAL_GetTick() >= timeout)
+ {
+ /* Change state */
+ hhash->State = HAL_HASH_STATE_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hhash);
+
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ /************************** STEP 3 ******************************************/
+ /* Configure the number of valid bits in last word of the message */
+ __HAL_HASH_SET_NBVALIDBITS(hhash->Init.KeySize);
+
+ /* Write input buffer in data register */
+ HASHEx_WriteData(hhash->Init.pKey, hhash->Init.KeySize);
+
+ /* Start the digest calculation */
+ __HAL_HASH_START_DIGEST();
+
+ /* Get timeout */
+ timeout = HAL_GetTick() + Timeout;
+
+ while((HASH->SR & HASH_FLAG_BUSY) == HASH_FLAG_BUSY)
+ {
+ /* Check for the Timeout */
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if(HAL_GetTick() >= timeout)
+ {
+ /* Change state */
+ hhash->State = HAL_HASH_STATE_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hhash);
+
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ /* Read the message digest */
+ HASHEx_GetDigest(pOutBuffer, 28);
+
+ /* Change the HASH state */
+ hhash->State = HAL_HASH_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hhash);
+
+ /* Return function status */
+ return HAL_OK;
+}
+
+/**
+ * @brief Initializes the HASH peripheral in HMAC SHA256 mode
+ * then processes pInBuffer. The digest is available in pOutBuffer
+ * @param hhash: HASH handle
+ * @param pInBuffer: Pointer to the input buffer (buffer to be hashed).
+ * @param pOutBuffer: Pointer to the output buffer (hashed buffer).
+ * @param Size: Length of the input buffer in bytes.
+ * If the Size is not multiple of 64 bytes, the padding is managed by hardware.
+ * @param pOutBuffer: Pointer to the computed digest. Its size must be 20 bytes.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_HMACEx_SHA256_Start(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, uint8_t* pOutBuffer, uint32_t Timeout)
+{
+ uint32_t timeout = 0;
+
+ /* Process Locked */
+ __HAL_LOCK(hhash);
+
+ /* Change the HASH state */
+ hhash->State = HAL_HASH_STATE_BUSY;
+
+ /* Check if initialization phase has already been performed */
+ if(hhash->Phase == HAL_HASH_PHASE_READY)
+ {
+ /* Check if key size is greater than 64 bytes */
+ if(hhash->Init.KeySize > 64)
+ {
+ /* Select the HMAC SHA256 mode */
+ HASH->CR |= (HASH_AlgoSelection_SHA256 | HASH_AlgoMode_HMAC | HASH_HMACKeyType_LongKey);
+ }
+ else
+ {
+ /* Select the HMAC SHA256 mode */
+ HASH->CR |= (HASH_AlgoSelection_SHA256 | HASH_AlgoMode_HMAC);
+ }
+ /* Reset the HASH processor core, so that the HASH will be ready to compute
+ the message digest of a new message */
+ HASH->CR |= HASH_CR_INIT;
+ }
+
+ /* Set the phase */
+ hhash->Phase = HAL_HASH_PHASE_PROCESS;
+
+ /************************** STEP 1 ******************************************/
+ /* Configure the number of valid bits in last word of the message */
+ __HAL_HASH_SET_NBVALIDBITS(hhash->Init.KeySize);
+
+ /* Write input buffer in data register */
+ HASHEx_WriteData(hhash->Init.pKey, hhash->Init.KeySize);
+
+ /* Start the digest calculation */
+ __HAL_HASH_START_DIGEST();
+
+ /* Get timeout */
+ timeout = HAL_GetTick() + Timeout;
+
+ while((HASH->SR & HASH_FLAG_BUSY) == HASH_FLAG_BUSY)
+ {
+ /* Check for the Timeout */
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if(HAL_GetTick() >= timeout)
+ {
+ /* Change state */
+ hhash->State = HAL_HASH_STATE_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hhash);
+
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ /************************** STEP 2 ******************************************/
+ /* Configure the number of valid bits in last word of the message */
+ __HAL_HASH_SET_NBVALIDBITS(Size);
+
+ /* Write input buffer in data register */
+ HASHEx_WriteData(pInBuffer, Size);
+
+ /* Start the digest calculation */
+ __HAL_HASH_START_DIGEST();
+
+ /* Get timeout */
+ timeout = HAL_GetTick() + Timeout;
+
+ while((HASH->SR & HASH_FLAG_BUSY) == HASH_FLAG_BUSY)
+ {
+ /* Check for the Timeout */
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if(HAL_GetTick() >= timeout)
+ {
+ /* Change state */
+ hhash->State = HAL_HASH_STATE_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hhash);
+
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ /************************** STEP 3 ******************************************/
+ /* Configure the number of valid bits in last word of the message */
+ __HAL_HASH_SET_NBVALIDBITS(hhash->Init.KeySize);
+
+ /* Write input buffer in data register */
+ HASHEx_WriteData(hhash->Init.pKey, hhash->Init.KeySize);
+
+ /* Start the digest calculation */
+ __HAL_HASH_START_DIGEST();
+
+ /* Get timeout */
+ timeout = HAL_GetTick() + Timeout;
+
+ while((HASH->SR & HASH_FLAG_BUSY) == HASH_FLAG_BUSY)
+ {
+ /* Check for the Timeout */
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if(HAL_GetTick() >= timeout)
+ {
+ /* Change state */
+ hhash->State = HAL_HASH_STATE_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hhash);
+
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ /* Read the message digest */
+ HASHEx_GetDigest(pOutBuffer, 32);
+
+ /* Change the HASH state */
+ hhash->State = HAL_HASH_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hhash);
+
+ /* Return function status */
+ return HAL_OK;
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup HASHEx_Group3 HASH processing functions using interrupt mode
+ * @brief processing functions using interrupt mode.
+ *
+@verbatim
+ ===============================================================================
+ ##### HASH processing using interrupt functions #####
+ ===============================================================================
+ [..] This section provides functions allowing to calculate in interrupt mode
+ the hash value using one of the following algorithms:
+ (+) SHA224
+ (+) SHA256
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Initializes the HASH peripheral in SHA224 mode then processes pInBuffer.
+ * The digest is available in pOutBuffer.
+ * @param hhash: HASH handle
+ * @param pInBuffer: Pointer to the input buffer (buffer to be hashed).
+ * @param Size: Length of the input buffer in bytes.
+ * If the Size is not multiple of 64 bytes, the padding is managed by hardware.
+ * @param pOutBuffer: Pointer to the computed digest. Its size must be 20 bytes.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_HASHEx_SHA224_Start_IT(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, uint8_t* pOutBuffer)
+{
+ uint32_t inputaddr;
+ uint32_t buffercounter;
+ uint32_t inputcounter;
+
+ /* Process Locked */
+ __HAL_LOCK(hhash);
+
+ if(hhash->HashITCounter == 0)
+ {
+ hhash->HashITCounter = 1;
+ }
+ else
+ {
+ hhash->HashITCounter = 0;
+ }
+ if(hhash->State == HAL_HASH_STATE_READY)
+ {
+ /* Change the HASH state */
+ hhash->State = HAL_HASH_STATE_BUSY;
+
+ hhash->HashInCount = Size;
+ hhash->pHashInBuffPtr = pInBuffer;
+ hhash->pHashOutBuffPtr = pOutBuffer;
+
+ /* Check if initialization phase has already been performed */
+ if(hhash->Phase == HAL_HASH_PHASE_READY)
+ {
+ /* Select the SHA224 mode */
+ HASH->CR |= HASH_AlgoSelection_SHA224;
+ /* Reset the HASH processor core, so that the HASH will be ready to compute
+ the message digest of a new message */
+ HASH->CR |= HASH_CR_INIT;
+ }
+
+ /* Set the phase */
+ hhash->Phase = HAL_HASH_PHASE_PROCESS;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hhash);
+
+ /* Enable Interrupts */
+ HASH->IMR = (HASH_IT_DINI | HASH_IT_DCI);
+
+ /* Return function status */
+ return HAL_OK;
+ }
+ if(__HAL_HASH_GET_FLAG(HASH_FLAG_DCIS))
+ {
+ /* Read the message digest */
+ HASHEx_GetDigest(hhash->pHashOutBuffPtr, 28);
+ if(hhash->HashInCount == 0)
+ {
+ /* Disable Interrupts */
+ HASH->IMR = 0;
+ /* Change the HASH state */
+ hhash->State = HAL_HASH_STATE_READY;
+ /* Call digest computation complete callback */
+ HAL_HASH_DgstCpltCallback(hhash);
+ }
+ }
+ if(__HAL_HASH_GET_FLAG(HASH_FLAG_DINIS))
+ {
+ if(hhash->HashInCount > 64)
+ {
+ inputaddr = (uint32_t)hhash->pHashInBuffPtr;
+ /* Write the Input block in the Data IN register */
+ for(buffercounter = 0; buffercounter < 64; buffercounter+=4)
+ {
+ HASH->DIN = *(uint32_t*)inputaddr;
+ inputaddr+=4;
+ }
+ if(hhash->HashITCounter == 0)
+ {
+ HASH->DIN = *(uint32_t*)inputaddr;
+ if(hhash->HashInCount >= 68)
+ {
+ /* Decrement buffer counter */
+ hhash->HashInCount -= 68;
+ hhash->pHashInBuffPtr+= 68;
+ }
+ else
+ {
+ hhash->HashInCount -= 64;
+ }
+ }
+ else
+ {
+ /* Decrement buffer counter */
+ hhash->HashInCount -= 64;
+ hhash->pHashInBuffPtr+= 64;
+ }
+ }
+ else
+ {
+ /* Get the buffer address */
+ inputaddr = (uint32_t)hhash->pHashInBuffPtr;
+ /* Get the buffer counter */
+ inputcounter = hhash->HashInCount;
+ /* Disable Interrupts */
+ HASH->IMR &= ~(HASH_IT_DINI);
+ /* Configure the number of valid bits in last word of the message */
+ __HAL_HASH_SET_NBVALIDBITS(inputcounter);
+
+ if((inputcounter > 4) && (inputcounter%4))
+ {
+ inputcounter = (inputcounter+4-inputcounter%4);
+ }
+
+ /* Write the Input block in the Data IN register */
+ for(buffercounter = 0; buffercounter < inputcounter/4; buffercounter++)
+ {
+ HASH->DIN = *(uint32_t*)inputaddr;
+ inputaddr+=4;
+ }
+ /* Start the digest calculation */
+ __HAL_HASH_START_DIGEST();
+ /* Reset buffer counter */
+ hhash->HashInCount = 0;
+ }
+ /* Call Input data transfer complete callback */
+ HAL_HASH_InCpltCallback(hhash);
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hhash);
+
+ /* Return function status */
+ return HAL_OK;
+}
+
+
+/**
+ * @brief Initializes the HASH peripheral in SHA256 mode then processes pInBuffer.
+ * The digest is available in pOutBuffer.
+ * @param hhash: HASH handle
+ * @param pInBuffer: Pointer to the input buffer (buffer to be hashed).
+ * @param Size: Length of the input buffer in bytes.
+ * If the Size is not multiple of 64 bytes, the padding is managed by hardware.
+ * @param pOutBuffer: Pointer to the computed digest. Its size must be 20 bytes.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_HASHEx_SHA256_Start_IT(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, uint8_t* pOutBuffer)
+{
+ uint32_t inputaddr;
+ uint32_t buffercounter;
+ uint32_t inputcounter;
+
+ /* Process Locked */
+ __HAL_LOCK(hhash);
+
+ if(hhash->HashITCounter == 0)
+ {
+ hhash->HashITCounter = 1;
+ }
+ else
+ {
+ hhash->HashITCounter = 0;
+ }
+ if(hhash->State == HAL_HASH_STATE_READY)
+ {
+ /* Change the HASH state */
+ hhash->State = HAL_HASH_STATE_BUSY;
+
+ hhash->HashInCount = Size;
+ hhash->pHashInBuffPtr = pInBuffer;
+ hhash->pHashOutBuffPtr = pOutBuffer;
+
+ /* Check if initialization phase has already been performed */
+ if(hhash->Phase == HAL_HASH_PHASE_READY)
+ {
+ /* Select the SHA256 mode */
+ HASH->CR |= HASH_AlgoSelection_SHA256;
+ /* Reset the HASH processor core, so that the HASH will be ready to compute
+ the message digest of a new message */
+ HASH->CR |= HASH_CR_INIT;
+ }
+
+ /* Set the phase */
+ hhash->Phase = HAL_HASH_PHASE_PROCESS;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hhash);
+
+ /* Enable Interrupts */
+ HASH->IMR = (HASH_IT_DINI | HASH_IT_DCI);
+
+ /* Return function status */
+ return HAL_OK;
+ }
+ if(__HAL_HASH_GET_FLAG(HASH_FLAG_DCIS))
+ {
+ /* Read the message digest */
+ HASHEx_GetDigest(hhash->pHashOutBuffPtr, 32);
+ if(hhash->HashInCount == 0)
+ {
+ /* Disable Interrupts */
+ HASH->IMR = 0;
+ /* Change the HASH state */
+ hhash->State = HAL_HASH_STATE_READY;
+ /* Call digest computation complete callback */
+ HAL_HASH_DgstCpltCallback(hhash);
+ }
+ }
+ if(__HAL_HASH_GET_FLAG(HASH_FLAG_DINIS))
+ {
+ if(hhash->HashInCount > 64)
+ {
+ inputaddr = (uint32_t)hhash->pHashInBuffPtr;
+ /* Write the Input block in the Data IN register */
+ for(buffercounter = 0; buffercounter < 64; buffercounter+=4)
+ {
+ HASH->DIN = *(uint32_t*)inputaddr;
+ inputaddr+=4;
+ }
+ if(hhash->HashITCounter == 0)
+ {
+ HASH->DIN = *(uint32_t*)inputaddr;
+
+ if(hhash->HashInCount >= 68)
+ {
+ /* Decrement buffer counter */
+ hhash->HashInCount -= 68;
+ hhash->pHashInBuffPtr+= 68;
+ }
+ else
+ {
+ hhash->HashInCount -= 64;
+ }
+ }
+ else
+ {
+ /* Decrement buffer counter */
+ hhash->HashInCount -= 64;
+ hhash->pHashInBuffPtr+= 64;
+ }
+ }
+ else
+ {
+ /* Get the buffer address */
+ inputaddr = (uint32_t)hhash->pHashInBuffPtr;
+ /* Get the buffer counter */
+ inputcounter = hhash->HashInCount;
+ /* Disable Interrupts */
+ HASH->IMR &= ~(HASH_IT_DINI);
+ /* Configure the number of valid bits in last word of the message */
+ __HAL_HASH_SET_NBVALIDBITS(inputcounter);
+
+ if((inputcounter > 4) && (inputcounter%4))
+ {
+ inputcounter = (inputcounter+4-inputcounter%4);
+ }
+
+ /* Write the Input block in the Data IN register */
+ for(buffercounter = 0; buffercounter < inputcounter/4; buffercounter++)
+ {
+ HASH->DIN = *(uint32_t*)inputaddr;
+ inputaddr+=4;
+ }
+ /* Start the digest calculation */
+ __HAL_HASH_START_DIGEST();
+ /* Reset buffer counter */
+ hhash->HashInCount = 0;
+ }
+ /* Call Input data transfer complete callback */
+ HAL_HASH_InCpltCallback(hhash);
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hhash);
+
+ /* Return function status */
+ return HAL_OK;
+}
+
+/**
+ * @brief This function handles HASH interrupt request.
+ * @param hhash: hash handle
+ * @retval None
+ */
+void HAL_HASHEx_IRQHandler(HASH_HandleTypeDef *hhash)
+{
+ switch(HASH->CR & HASH_CR_ALGO)
+ {
+
+ case HASH_AlgoSelection_SHA224:
+ HAL_HASHEx_SHA224_Start_IT(hhash, NULL, 0, NULL);
+ break;
+
+ case HASH_AlgoSelection_SHA256:
+ HAL_HASHEx_SHA256_Start_IT(hhash, NULL, 0, NULL);
+ break;
+
+ default:
+ break;
+ }
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup HASHEx_Group4 HASH processing functions using DMA mode
+ * @brief processing functions using DMA mode.
+ *
+@verbatim
+ ===============================================================================
+ ##### HASH processing using DMA functions #####
+ ===============================================================================
+ [..] This section provides functions allowing to calculate in DMA mode
+ the hash value using one of the following algorithms:
+ (+) SHA224
+ (+) SHA256
+
+@endverbatim
+ * @{
+ */
+
+
+/**
+ * @brief Initializes the HASH peripheral in SHA224 mode then enables DMA to
+ control data transfer. Use HAL_HASH_SHA224_Finish() to get the digest.
+ * @param hhash: HASH handle
+ * @param pInBuffer: Pointer to the input buffer (buffer to be hashed).
+ * @param Size: Length of the input buffer in bytes.
+ * If the Size is not multiple of 64 bytes, the padding is managed by hardware.
+ * @param pOutBuffer: Pointer to the computed digest. Its size must be 28 bytes.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_HASHEx_SHA224_Start_DMA(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size)
+{
+ uint32_t inputaddr = (uint32_t)pInBuffer;
+
+ /* Process Locked */
+ __HAL_LOCK(hhash);
+
+ /* Change the HASH state */
+ hhash->State = HAL_HASH_STATE_BUSY;
+
+ /* Check if initialization phase has already been performed */
+ if(hhash->Phase == HAL_HASH_PHASE_READY)
+ {
+ /* Select the SHA224 mode and reset the HASH processor core, so that the HASH will be ready to compute
+ the message digest of a new message */
+ HASH->CR |= HASH_AlgoSelection_SHA224 | HASH_CR_INIT;
+ }
+
+ /* Configure the number of valid bits in last word of the message */
+ __HAL_HASH_SET_NBVALIDBITS(Size);
+
+ /* Set the phase */
+ hhash->Phase = HAL_HASH_PHASE_PROCESS;
+
+ /* Set the HASH DMA transfer complete callback */
+ hhash->hdmain->XferCpltCallback = HASHEx_DMAXferCplt;
+ /* Set the DMA error callback */
+ hhash->hdmain->XferErrorCallback = HASHEx_DMAError;
+
+ /* Enable the DMA In DMA Stream */
+ HAL_DMA_Start_IT(hhash->hdmain, inputaddr, (uint32_t)&HASH->DIN, (Size%4 ? (Size+3)/4:Size/4));
+
+ /* Enable DMA requests */
+ HASH->CR |= (HASH_CR_DMAE);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hhash);
+
+ /* Return function status */
+ return HAL_OK;
+}
+
+/**
+ * @brief Returns the computed digest in SHA224
+ * @param hhash: HASH handle
+ * @param pOutBuffer: Pointer to the computed digest. Its size must be 28 bytes.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_HASHEx_SHA224_Finish(HASH_HandleTypeDef *hhash, uint8_t* pOutBuffer, uint32_t Timeout)
+{
+ uint32_t timeout = 0;
+
+ /* Process Locked */
+ __HAL_LOCK(hhash);
+
+ /* Change HASH peripheral state */
+ hhash->State = HAL_HASH_STATE_BUSY;
+
+ /* Get timeout */
+ timeout = HAL_GetTick() + Timeout;
+
+ while(HAL_IS_BIT_CLR(HASH->SR, HASH_FLAG_DCIS))
+ {
+ /* Check for the Timeout */
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if(HAL_GetTick() >= timeout)
+ {
+ /* Change state */
+ hhash->State = HAL_HASH_STATE_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hhash);
+
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+
+ /* Read the message digest */
+ HASHEx_GetDigest(pOutBuffer, 28);
+
+ /* Change HASH peripheral state */
+ hhash->State = HAL_HASH_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hhash);
+
+ /* Return function status */
+ return HAL_OK;
+}
+
+/**
+ * @brief Initializes the HASH peripheral in SHA256 mode then enables DMA to
+ control data transfer. Use HAL_HASH_SHA256_Finish() to get the digest.
+ * @param hhash: HASH handle
+ * @param pInBuffer: Pointer to the input buffer (buffer to be hashed).
+ * @param Size: Length of the input buffer in bytes.
+ * If the Size is not multiple of 64 bytes, the padding is managed by hardware.
+ * @param pOutBuffer: Pointer to the computed digest. Its size must be 20 bytes.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_HASHEx_SHA256_Start_DMA(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size)
+{
+ uint32_t inputaddr = (uint32_t)pInBuffer;
+
+ /* Process Locked */
+ __HAL_LOCK(hhash);
+
+ /* Change the HASH state */
+ hhash->State = HAL_HASH_STATE_BUSY;
+
+ /* Check if initialization phase has already been performed */
+ if(hhash->Phase == HAL_HASH_PHASE_READY)
+ {
+ /* Select the SHA256 mode and reset the HASH processor core, so that the HASH will be ready to compute
+ the message digest of a new message */
+ HASH->CR |= HASH_AlgoSelection_SHA256 | HASH_CR_INIT;
+ }
+
+ /* Configure the number of valid bits in last word of the message */
+ __HAL_HASH_SET_NBVALIDBITS(Size);
+
+ /* Set the phase */
+ hhash->Phase = HAL_HASH_PHASE_PROCESS;
+
+ /* Set the HASH DMA transfer complete callback */
+ hhash->hdmain->XferCpltCallback = HASHEx_DMAXferCplt;
+ /* Set the DMA error callback */
+ hhash->hdmain->XferErrorCallback = HASHEx_DMAError;
+
+ /* Enable the DMA In DMA Stream */
+ HAL_DMA_Start_IT(hhash->hdmain, inputaddr, (uint32_t)&HASH->DIN, (Size%4 ? (Size+3)/4:Size/4));
+
+ /* Enable DMA requests */
+ HASH->CR |= (HASH_CR_DMAE);
+
+ /* Process UnLock */
+ __HAL_UNLOCK(hhash);
+
+ /* Return function status */
+ return HAL_OK;
+}
+
+/**
+ * @brief Returns the computed digest in SHA256.
+ * @param hhash: HASH handle
+ * @param pOutBuffer: Pointer to the computed digest. Its size must be 32 bytes.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_HASHEx_SHA256_Finish(HASH_HandleTypeDef *hhash, uint8_t* pOutBuffer, uint32_t Timeout)
+{
+ uint32_t timeout = 0;
+
+ /* Process Locked */
+ __HAL_LOCK(hhash);
+
+ /* Change HASH peripheral state */
+ hhash->State = HAL_HASH_STATE_BUSY;
+
+ /* Get timeout */
+ timeout = HAL_GetTick() + Timeout;
+
+ while(HAL_IS_BIT_CLR(HASH->SR, HASH_FLAG_DCIS))
+ {
+ /* Check for the Timeout */
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if(HAL_GetTick() >= timeout)
+ {
+ /* Change state */
+ hhash->State = HAL_HASH_STATE_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hhash);
+
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+
+ /* Read the message digest */
+ HASHEx_GetDigest(pOutBuffer, 32);
+
+ /* Change HASH peripheral state */
+ hhash->State = HAL_HASH_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hhash);
+
+ /* Return function status */
+ return HAL_OK;
+}
+
+
+/**
+ * @}
+ */
+/** @defgroup HASHEx_Group5 HMAC processing functions using DMA mode
+ * @brief HMAC processing functions using DMA mode .
+ *
+@verbatim
+ ===============================================================================
+ ##### HMAC processing using DMA functions #####
+ ===============================================================================
+ [..] This section provides functions allowing to calculate in DMA mode
+ the HMAC value using one of the following algorithms:
+ (+) SHA224
+ (+) SHA256
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Initializes the HASH peripheral in HMAC SHA224 mode
+ * then enables DMA to control data transfer.
+ * @param hhash: HASH handle
+ * @param pInBuffer: Pointer to the input buffer (buffer to be hashed).
+ * @param Size: Length of the input buffer in bytes.
+ * If the Size is not multiple of 64 bytes, the padding is managed by hardware.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_HMACEx_SHA224_Start_DMA(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size)
+{
+ uint32_t inputaddr;
+
+ /* Process Locked */
+ __HAL_LOCK(hhash);
+
+ /* Change the HASH state */
+ hhash->State = HAL_HASH_STATE_BUSY;
+
+ /* Save buffer pointer and size in handle */
+ hhash->pHashInBuffPtr = pInBuffer;
+ hhash->HashBuffSize = Size;
+ hhash->HashInCount = 0;
+
+ /* Check if initialization phase has already been performed */
+ if(hhash->Phase == HAL_HASH_PHASE_READY)
+ {
+ /* Check if key size is greater than 64 bytes */
+ if(hhash->Init.KeySize > 64)
+ {
+ /* Select the HMAC SHA224 mode */
+ HASH->CR |= (HASH_AlgoSelection_SHA224 | HASH_AlgoMode_HMAC | HASH_HMACKeyType_LongKey | HASH_CR_INIT);
+ }
+ else
+ {
+ /* Select the HMAC SHA224 mode */
+ HASH->CR |= (HASH_AlgoSelection_SHA224 | HASH_AlgoMode_HMAC | HASH_CR_INIT);
+ }
+ }
+
+ /* Set the phase */
+ hhash->Phase = HAL_HASH_PHASE_PROCESS;
+
+ /* Configure the number of valid bits in last word of the message */
+ __HAL_HASH_SET_NBVALIDBITS(hhash->Init.KeySize);
+
+ /* Get the key address */
+ inputaddr = (uint32_t)(hhash->Init.pKey);
+
+ /* Set the HASH DMA transfer complete callback */
+ hhash->hdmain->XferCpltCallback = HASHEx_DMAXferCplt;
+ /* Set the DMA error callback */
+ hhash->hdmain->XferErrorCallback = HASHEx_DMAError;
+
+ /* Enable the DMA In DMA Stream */
+ HAL_DMA_Start_IT(hhash->hdmain, inputaddr, (uint32_t)&HASH->DIN, (hhash->Init.KeySize%4 ? (hhash->Init.KeySize+3)/4:hhash->Init.KeySize/4));
+ /* Enable DMA requests */
+ HASH->CR |= (HASH_CR_DMAE);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hhash);
+
+ /* Return function status */
+ return HAL_OK;
+}
+
+/**
+ * @brief Initializes the HASH peripheral in HMAC SHA256 mode
+ * then enables DMA to control data transfer.
+ * @param hhash: HASH handle
+ * @param pInBuffer: Pointer to the input buffer (buffer to be hashed).
+ * @param Size: Length of the input buffer in bytes.
+ * If the Size is not multiple of 64 bytes, the padding is managed by hardware.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_HMACEx_SHA256_Start_DMA(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size)
+{
+ uint32_t inputaddr;
+
+ /* Process Locked */
+ __HAL_LOCK(hhash);
+
+ /* Change the HASH state */
+ hhash->State = HAL_HASH_STATE_BUSY;
+
+ /* Save buffer pointer and size in handle */
+ hhash->pHashInBuffPtr = pInBuffer;
+ hhash->HashBuffSize = Size;
+ hhash->HashInCount = 0;
+
+ /* Check if initialization phase has already been performed */
+ if(hhash->Phase == HAL_HASH_PHASE_READY)
+ {
+ /* Check if key size is greater than 64 bytes */
+ if(hhash->Init.KeySize > 64)
+ {
+ /* Select the HMAC SHA256 mode */
+ HASH->CR |= (HASH_AlgoSelection_SHA256 | HASH_AlgoMode_HMAC | HASH_HMACKeyType_LongKey);
+ }
+ else
+ {
+ /* Select the HMAC SHA256 mode */
+ HASH->CR |= (HASH_AlgoSelection_SHA256 | HASH_AlgoMode_HMAC);
+ }
+ /* Reset the HASH processor core, so that the HASH will be ready to compute
+ the message digest of a new message */
+ HASH->CR |= HASH_CR_INIT;
+ }
+
+ /* Set the phase */
+ hhash->Phase = HAL_HASH_PHASE_PROCESS;
+
+ /* Configure the number of valid bits in last word of the message */
+ __HAL_HASH_SET_NBVALIDBITS(hhash->Init.KeySize);
+
+ /* Get the key address */
+ inputaddr = (uint32_t)(hhash->Init.pKey);
+
+ /* Set the HASH DMA transfer complete callback */
+ hhash->hdmain->XferCpltCallback = HASHEx_DMAXferCplt;
+ /* Set the DMA error callback */
+ hhash->hdmain->XferErrorCallback = HASHEx_DMAError;
+
+ /* Enable the DMA In DMA Stream */
+ HAL_DMA_Start_IT(hhash->hdmain, inputaddr, (uint32_t)&HASH->DIN, (hhash->Init.KeySize%4 ? (hhash->Init.KeySize+3)/4:hhash->Init.KeySize/4));
+ /* Enable DMA requests */
+ HASH->CR |= (HASH_CR_DMAE);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hhash);
+
+ /* Return function status */
+ return HAL_OK;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @brief Writes the input buffer in data register.
+ * @param pInBuffer: Pointer to input buffer
+ * @param Size: The size of input buffer
+ * @retval None
+ */
+static void HASHEx_WriteData(uint8_t *pInBuffer, uint32_t Size)
+{
+ uint32_t buffercounter;
+ uint32_t inputaddr = (uint32_t) pInBuffer;
+
+ for(buffercounter = 0; buffercounter < Size; buffercounter+=4)
+ {
+ HASH->DIN = *(uint32_t*)inputaddr;
+ inputaddr+=4;
+ }
+}
+
+/**
+ * @brief Provides the message digest result.
+ * @param pMsgDigest: Pointer to the message digest
+ * @param Size: The size of the message digest in bytes
+ * @retval None
+ */
+static void HASHEx_GetDigest(uint8_t *pMsgDigest, uint8_t Size)
+{
+ uint32_t msgdigest = (uint32_t)pMsgDigest;
+
+ switch(Size)
+ {
+ case 16:
+ /* Read the message digest */
+ *(uint32_t*)(msgdigest) = __REV(HASH->HR[0]);
+ msgdigest+=4;
+ *(uint32_t*)(msgdigest) = __REV(HASH->HR[1]);
+ msgdigest+=4;
+ *(uint32_t*)(msgdigest) = __REV(HASH->HR[2]);
+ msgdigest+=4;
+ *(uint32_t*)(msgdigest) = __REV(HASH->HR[3]);
+ break;
+ case 20:
+ /* Read the message digest */
+ *(uint32_t*)(msgdigest) = __REV(HASH->HR[0]);
+ msgdigest+=4;
+ *(uint32_t*)(msgdigest) = __REV(HASH->HR[1]);
+ msgdigest+=4;
+ *(uint32_t*)(msgdigest) = __REV(HASH->HR[2]);
+ msgdigest+=4;
+ *(uint32_t*)(msgdigest) = __REV(HASH->HR[3]);
+ msgdigest+=4;
+ *(uint32_t*)(msgdigest) = __REV(HASH->HR[4]);
+ break;
+ case 28:
+ /* Read the message digest */
+ *(uint32_t*)(msgdigest) = __REV(HASH->HR[0]);
+ msgdigest+=4;
+ *(uint32_t*)(msgdigest) = __REV(HASH->HR[1]);
+ msgdigest+=4;
+ *(uint32_t*)(msgdigest) = __REV(HASH->HR[2]);
+ msgdigest+=4;
+ *(uint32_t*)(msgdigest) = __REV(HASH->HR[3]);
+ msgdigest+=4;
+ *(uint32_t*)(msgdigest) = __REV(HASH->HR[4]);
+ msgdigest+=4;
+ *(uint32_t*)(msgdigest) = __REV(HASH_DIGEST->HR[5]);
+ msgdigest+=4;
+ *(uint32_t*)(msgdigest) = __REV(HASH_DIGEST->HR[6]);
+ break;
+ case 32:
+ /* Read the message digest */
+ *(uint32_t*)(msgdigest) = __REV(HASH->HR[0]);
+ msgdigest+=4;
+ *(uint32_t*)(msgdigest) = __REV(HASH->HR[1]);
+ msgdigest+=4;
+ *(uint32_t*)(msgdigest) = __REV(HASH->HR[2]);
+ msgdigest+=4;
+ *(uint32_t*)(msgdigest) = __REV(HASH->HR[3]);
+ msgdigest+=4;
+ *(uint32_t*)(msgdigest) = __REV(HASH->HR[4]);
+ msgdigest+=4;
+ *(uint32_t*)(msgdigest) = __REV(HASH_DIGEST->HR[5]);
+ msgdigest+=4;
+ *(uint32_t*)(msgdigest) = __REV(HASH_DIGEST->HR[6]);
+ msgdigest+=4;
+ *(uint32_t*)(msgdigest) = __REV(HASH_DIGEST->HR[7]);
+ break;
+ default:
+ break;
+ }
+}
+
+/**
+ * @brief DMA HASH Input Data complete callback.
+ * @param hdma: DMA handle
+ * @retval None
+ */
+static void HASHEx_DMAXferCplt(DMA_HandleTypeDef *hdma)
+{
+ HASH_HandleTypeDef* hhash = ( HASH_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+ uint32_t inputaddr = 0;
+ uint32_t buffersize = 0;
+
+ if((HASH->CR & HASH_CR_MODE) != HASH_CR_MODE)
+ {
+ /* Disable the DMA transfer */
+ HASH->CR &= (uint32_t)(~HASH_CR_DMAE);
+
+ /* Change HASH peripheral state */
+ hhash->State = HAL_HASH_STATE_READY;
+
+ /* Call Input data transfer complete callback */
+ HAL_HASH_InCpltCallback(hhash);
+ }
+ else
+ {
+ /* Increment Interrupt counter */
+ hhash->HashInCount++;
+ /* Disable the DMA transfer before starting the next transfer */
+ HASH->CR &= (uint32_t)(~HASH_CR_DMAE);
+
+ if(hhash->HashInCount <= 2)
+ {
+ /* In case HashInCount = 1, set the DMA to transfer data to HASH DIN register */
+ if(hhash->HashInCount == 1)
+ {
+ inputaddr = (uint32_t)hhash->pHashInBuffPtr;
+ buffersize = hhash->HashBuffSize;
+ }
+ /* In case HashInCount = 2, set the DMA to transfer key to HASH DIN register */
+ else if(hhash->HashInCount == 2)
+ {
+ inputaddr = (uint32_t)hhash->Init.pKey;
+ buffersize = hhash->Init.KeySize;
+ }
+ /* Configure the number of valid bits in last word of the message */
+ HASH->STR |= 8 * (buffersize % 4);
+
+ /* Set the HASH DMA transfer complete */
+ hhash->hdmain->XferCpltCallback = HASHEx_DMAXferCplt;
+
+ /* Enable the DMA In DMA Stream */
+ HAL_DMA_Start_IT(hhash->hdmain, inputaddr, (uint32_t)&HASH->DIN, (buffersize%4 ? (buffersize+3)/4:buffersize/4));
+
+ /* Enable DMA requests */
+ HASH->CR |= (HASH_CR_DMAE);
+ }
+ else
+ {
+ /* Disable the DMA transfer */
+ HASH->CR &= (uint32_t)(~HASH_CR_DMAE);
+
+ /* Reset the InCount */
+ hhash->HashInCount = 0;
+
+ /* Change HASH peripheral state */
+ hhash->State = HAL_HASH_STATE_READY;
+
+ /* Call Input data transfer complete callback */
+ HAL_HASH_InCpltCallback(hhash);
+ }
+ }
+}
+
+/**
+ * @brief DMA HASH communication error callback.
+ * @param hdma: DMA handle
+ * @retval None
+ */
+static void HASHEx_DMAError(DMA_HandleTypeDef *hdma)
+{
+ HASH_HandleTypeDef* hhash = ( HASH_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+ hhash->State= HAL_HASH_STATE_READY;
+ HAL_HASH_ErrorCallback(hhash);
+}
+
+
+/**
+ * @}
+ */
+#endif /* STM32F437xx || STM32F439xx */
+
+#endif /* HAL_HASH_MODULE_ENABLED */
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/