From 86608c6770cf08c138a2bdab5855072f64be09ef Mon Sep 17 00:00:00 2001 From: joshua Date: Sat, 30 Dec 2023 23:54:31 -0500 Subject: initial commit --- .../STM32H7xx_HAL_Driver/Src/stm32h7xx_hal_hash.c | 3493 ++++++++++++++++++++ 1 file changed, 3493 insertions(+) create mode 100644 Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_hal_hash.c (limited to 'Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_hal_hash.c') diff --git a/Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_hal_hash.c b/Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_hal_hash.c new file mode 100644 index 0000000..21136aa --- /dev/null +++ b/Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_hal_hash.c @@ -0,0 +1,3493 @@ +/** + ****************************************************************************** + * @file stm32h7xx_hal_hash.c + * @author MCD Application Team + * @brief HASH HAL module driver. + * This file provides firmware functions to manage the following + * functionalities of the HASH peripheral: + * + Initialization and de-initialization methods + * + HASH or HMAC processing in polling mode + * + HASH or HMAC processing in interrupt mode + * + HASH or HMAC processing in DMA mode + * + Peripheral State methods + * + HASH or HMAC processing suspension/resumption + * + ****************************************************************************** + * @attention + * + * Copyright (c) 2017 STMicroelectronics. + * All rights reserved. + * + * This software is licensed under terms that can be found in the LICENSE file + * in the root directory of this software component. + * If no LICENSE file comes with this software, it is provided AS-IS. + * + ****************************************************************************** + @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() + (##) When resorting to interrupt-based APIs (e.g. HAL_HASH_xxx_Start_IT()) + (+++) 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() API + (##) When resorting to DMA-based APIs (e.g. HAL_HASH_xxx_Start_DMA()) + (+++) Enable the DMAx interface clock using + __DMAx_CLK_ENABLE() + (+++) Configure and enable one DMA stream to manage 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: use + HAL_NVIC_SetPriority() and + HAL_NVIC_EnableIRQ() + + (#)Initialize the HASH HAL using HAL_HASH_Init(). This function: + (##) resorts to HAL_HASH_MspInit() for low-level initialization, + (##) configures the data type: 1-bit, 8-bit, 16-bit or 32-bit. + + (#)Three processing schemes 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_HASH_xxx_Start() for HASH or HAL_HMAC_xxx_Start() for HMAC + (##) Interrupt mode: processing APIs are not blocking functions + i.e. they process the data under interrupt, + e.g. HAL_HASH_xxx_Start_IT() for HASH or HAL_HMAC_xxx_Start_IT() for HMAC + (##) 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_HASH_xxx_Start_DMA() for HASH or HAL_HMAC_xxx_Start_DMA() + for HMAC. Note that in DMA mode, a call to HAL_HASH_xxx_Finish() + is then required to retrieve the digest. + + (#)When the processing function is called after HAL_HASH_Init(), the HASH peripheral is + initialized and processes the buffer fed in input. When the input data have all been + fed to the Peripheral, the digest computation can start. + + (#)Multi-buffer processing is possible in polling, interrupt and DMA modes. + (##) In polling mode, only multi-buffer HASH processing is possible. + API HAL_HASH_xxx_Accumulate() must be called for each input buffer, except for the last one. + User must resort to HAL_HASH_xxx_Accumulate_End() to enter the last one and retrieve as + well the computed digest. + + (##) In interrupt mode, API HAL_HASH_xxx_Accumulate_IT() must be called for each input buffer, + except for the last one. + User must resort to HAL_HASH_xxx_Accumulate_End_IT() to enter the last one and retrieve as + well the computed digest. + + (##) In DMA mode, multi-buffer HASH and HMAC processing are possible. + (+++) HASH processing: once initialization is done, MDMAT bit must be set + through __HAL_HASH_SET_MDMAT() macro. + From that point, each buffer can be fed to the Peripheral through HAL_HASH_xxx_Start_DMA() API. + Before entering the last buffer, reset the MDMAT bit with __HAL_HASH_RESET_MDMAT() + macro then wrap-up the HASH processing in feeding the last input buffer through the + same API HAL_HASH_xxx_Start_DMA(). The digest can then be retrieved with a call to + API HAL_HASH_xxx_Finish(). + (+++) HMAC processing (requires to resort to extended functions): + after initialization, the key and the first input buffer are entered + in the Peripheral with the API HAL_HMACEx_xxx_Step1_2_DMA(). This carries out HMAC step 1 and + starts step 2. + The following buffers are next entered with the API HAL_HMACEx_xxx_Step2_DMA(). At this + point, the HMAC processing is still carrying out step 2. + Then, step 2 for the last input buffer and step 3 are carried out by a single call + to HAL_HMACEx_xxx_Step2_3_DMA(). + + The digest can finally be retrieved with a call to API HAL_HASH_xxx_Finish(). + + + (#)Context swapping. + (##) Two APIs are available to suspend HASH or HMAC processing: + (+++) HAL_HASH_SwFeed_ProcessSuspend() when data are entered by software (polling or IT mode), + (+++) HAL_HASH_DMAFeed_ProcessSuspend() when data are entered by DMA. + + (##) When HASH or HMAC processing is suspended, HAL_HASH_ContextSaving() allows + to save in memory the Peripheral context. This context can be restored afterwards + to resume the HASH processing thanks to HAL_HASH_ContextRestoring(). + + (##) Once the HASH Peripheral has been restored to the same configuration as that at suspension + time, processing can be restarted with the same API call (same API, same handle, + same parameters) as done before the suspension. Relevant parameters to restart at + the proper location are internally saved in the HASH handle. + + (#)Call HAL_HASH_DeInit() to deinitialize the HASH peripheral. + + *** Remarks on message length *** + =================================== + [..] + (#) HAL in interruption mode (interruptions driven) + + (##)Due to HASH peripheral hardware design, the peripheral interruption is triggered every 64 bytes. + This is why, for driver implementation simplicity’s sake, user is requested to enter a message the + length of which is a multiple of 4 bytes. + + (##) When the message length (in bytes) is not a multiple of words, a specific field exists in HASH_STR + to specify which bits to discard at the end of the complete message to process only the message bits + and not extra bits. + + (##) If user needs to perform a hash computation of a large input buffer that is spread around various places + in memory and where each piece of this input buffer is not necessarily a multiple of 4 bytes in size, it becomes + necessary to use a temporary buffer to format the data accordingly before feeding them to the Peripheral. + It is advised to the user to + (+++) achieve the first formatting operation by software then enter the data + (+++) while the Peripheral is processing the first input set, carry out the second formatting + operation by software, to be ready when DINIS occurs. + (+++) repeat step 2 until the whole message is processed. + + [..] + (#) HAL in DMA mode + + (##) Again, due to hardware design, the DMA transfer to feed the data can only be done on a word-basis. + The same field described above in HASH_STR is used to specify which bits to discard at the end of the + DMA transfer to process only the message bits and not extra bits. Due to hardware implementation, + this is possible only at the end of the complete message. When several DMA transfers are needed to + enter the message, this is not applicable at the end of the intermediary transfers. + + (##) Similarly to the interruption-driven mode, it is suggested to the user to format the consecutive + chunks of data by software while the DMA transfer and processing is on-going for the first parts of + the message. Due to the 32-bit alignment required for the DMA transfer, it is underlined that the + software formatting operation is more complex than in the IT mode. + + *** Callback registration *** + =================================== + [..] + (#) The compilation define USE_HAL_HASH_REGISTER_CALLBACKS when set to 1 + allows the user to configure dynamically the driver callbacks. + Use function HAL_HASH_RegisterCallback() to register a user callback. + + (#) Function HAL_HASH_RegisterCallback() allows to register following callbacks: + (+) InCpltCallback : callback for input completion. + (+) DgstCpltCallback : callback for digest computation completion. + (+) ErrorCallback : callback for error. + (+) MspInitCallback : HASH MspInit. + (+) MspDeInitCallback : HASH MspDeInit. + This function takes as parameters the HAL peripheral handle, the Callback ID + and a pointer to the user callback function. + + (#) Use function HAL_HASH_UnRegisterCallback() to reset a callback to the default + weak (surcharged) function. + HAL_HASH_UnRegisterCallback() takes as parameters the HAL peripheral handle, + and the Callback ID. + This function allows to reset following callbacks: + (+) InCpltCallback : callback for input completion. + (+) DgstCpltCallback : callback for digest computation completion. + (+) ErrorCallback : callback for error. + (+) MspInitCallback : HASH MspInit. + (+) MspDeInitCallback : HASH MspDeInit. + + (#) By default, after the HAL_HASH_Init and if the state is HAL_HASH_STATE_RESET + all callbacks are reset to the corresponding legacy weak (surcharged) functions: + examples HAL_HASH_InCpltCallback(), HAL_HASH_DgstCpltCallback() + Exception done for MspInit and MspDeInit callbacks that are respectively + reset to the legacy weak (surcharged) functions in the HAL_HASH_Init + and HAL_HASH_DeInit only when these callbacks are null (not registered beforehand) + If not, MspInit or MspDeInit are not null, the HAL_HASH_Init and HAL_HASH_DeInit + keep and use the user MspInit/MspDeInit callbacks (registered beforehand). + + Callbacks can be registered/unregistered in READY state only. + Exception done for MspInit/MspDeInit callbacks that can be registered/unregistered + in READY or RESET state, thus registered (user) MspInit/DeInit callbacks can be used + during the Init/DeInit. + In that case first register the MspInit/MspDeInit user callbacks + using HAL_HASH_RegisterCallback before calling HAL_HASH_DeInit + or HAL_HASH_Init function. + + When The compilation define USE_HAL_HASH_REGISTER_CALLBACKS is set to 0 or + not defined, the callback registering feature is not available + and weak (surcharged) callbacks are used. + + @endverbatim + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32h7xx_hal.h" + + +/** @addtogroup STM32H7xx_HAL_Driver + * @{ + */ +#if defined (HASH) + +/** @defgroup HASH HASH + * @brief HASH HAL module driver. + * @{ + */ + +#ifdef HAL_HASH_MODULE_ENABLED + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/** @defgroup HASH_Private_Constants HASH Private Constants + * @{ + */ + +/** @defgroup HASH_Digest_Calculation_Status HASH Digest Calculation Status + * @{ + */ +#define HASH_DIGEST_CALCULATION_NOT_STARTED ((uint32_t)0x00000000U) /*!< DCAL not set after input data written in DIN register */ +#define HASH_DIGEST_CALCULATION_STARTED ((uint32_t)0x00000001U) /*!< DCAL set after input data written in DIN register */ +/** + * @} + */ + +/** @defgroup HASH_Number_Of_CSR_Registers HASH Number of Context Swap Registers + * @{ + */ +#define HASH_NUMBER_OF_CSR_REGISTERS 54U /*!< Number of Context Swap Registers */ +/** + * @} + */ + +/** @defgroup HASH_TimeOut_Value HASH TimeOut Value + * @{ + */ +#define HASH_TIMEOUTVALUE 1000U /*!< Time-out value */ +/** + * @} + */ + +/** @defgroup HASH_DMA_Suspension_Words_Limit HASH DMA suspension words limit + * @{ + */ +#define HASH_DMA_SUSPENSION_WORDS_LIMIT 20U /*!< Number of words below which DMA suspension is aborted */ +/** + * @} + */ + +/** + * @} + */ + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/** @defgroup HASH_Private_Functions HASH Private Functions + * @{ + */ +static void HASH_DMAXferCplt(DMA_HandleTypeDef *hdma); +static void HASH_DMAError(DMA_HandleTypeDef *hdma); +static void HASH_GetDigest(uint8_t *pMsgDigest, uint8_t Size); +static HAL_StatusTypeDef HASH_WaitOnFlagUntilTimeout(HASH_HandleTypeDef *hhash, uint32_t Flag, FlagStatus Status, + uint32_t Timeout); +static HAL_StatusTypeDef HASH_WriteData(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size); +static HAL_StatusTypeDef HASH_IT(HASH_HandleTypeDef *hhash); +static uint32_t HASH_Write_Block_Data(HASH_HandleTypeDef *hhash); +static HAL_StatusTypeDef HMAC_Processing(HASH_HandleTypeDef *hhash, uint32_t Timeout); +/** + * @} + */ + +/** @defgroup HASH_Exported_Functions HASH Exported Functions + * @{ + */ + +/** @defgroup HASH_Exported_Functions_Group1 Initialization and de-initialization functions + * @brief Initialization, configuration and call-back functions. + * +@verbatim + =============================================================================== + ##### Initialization and de-initialization functions ##### + =============================================================================== + [..] This section provides functions allowing to: + (+) Initialize the HASH according to the specified parameters + in the HASH_InitTypeDef and create the associated handle + (+) DeInitialize the HASH peripheral + (+) Initialize the HASH MCU Specific Package (MSP) + (+) DeInitialize the HASH MSP + + [..] This section provides as well call back functions definitions for user + code to manage: + (+) Input data transfer to Peripheral completion + (+) Calculated digest retrieval completion + (+) Error management + + + +@endverbatim + * @{ + */ + +/** + * @brief Initialize the HASH according to the specified parameters in the + HASH_HandleTypeDef and create the associated handle. + * @note Only MDMAT and DATATYPE bits of HASH Peripheral are set by HAL_HASH_Init(), + * other configuration bits are set by HASH or HMAC processing APIs. + * @note MDMAT bit is systematically reset by HAL_HASH_Init(). To set it for + * multi-buffer HASH processing, user needs to resort to + * __HAL_HASH_SET_MDMAT() macro. For HMAC multi-buffer processing, the + * relevant APIs manage themselves the MDMAT bit. + * @param hhash HASH handle + * @retval HAL status + */ +HAL_StatusTypeDef HAL_HASH_Init(HASH_HandleTypeDef *hhash) +{ + /* Check the hash handle allocation */ + if (hhash == NULL) + { + return HAL_ERROR; + } + + /* Check the parameters */ + assert_param(IS_HASH_DATATYPE(hhash->Init.DataType)); + +#if (USE_HAL_HASH_REGISTER_CALLBACKS == 1) + if (hhash->State == HAL_HASH_STATE_RESET) + { + /* Allocate lock resource and initialize it */ + hhash->Lock = HAL_UNLOCKED; + + /* Reset Callback pointers in HAL_HASH_STATE_RESET only */ + hhash->InCpltCallback = HAL_HASH_InCpltCallback; /* Legacy weak (surcharged) input completion callback */ + hhash->DgstCpltCallback = HAL_HASH_DgstCpltCallback; /* Legacy weak (surcharged) digest computation + completion callback */ + hhash->ErrorCallback = HAL_HASH_ErrorCallback; /* Legacy weak (surcharged) error callback */ + if (hhash->MspInitCallback == NULL) + { + hhash->MspInitCallback = HAL_HASH_MspInit; + } + + /* Init the low level hardware */ + hhash->MspInitCallback(hhash); + } +#else + if (hhash->State == HAL_HASH_STATE_RESET) + { + /* Allocate lock resource and initialize it */ + hhash->Lock = HAL_UNLOCKED; + + /* Init the low level hardware */ + HAL_HASH_MspInit(hhash); + } +#endif /* (USE_HAL_HASH_REGISTER_CALLBACKS) */ + + /* Change the HASH state */ + hhash->State = HAL_HASH_STATE_BUSY; + + /* Reset HashInCount, HashITCounter, HashBuffSize and NbWordsAlreadyPushed */ + hhash->HashInCount = 0; + hhash->HashBuffSize = 0; + hhash->HashITCounter = 0; + hhash->NbWordsAlreadyPushed = 0; + /* Reset digest calculation bridle (MDMAT bit control) */ + hhash->DigestCalculationDisable = RESET; + /* Set phase to READY */ + hhash->Phase = HAL_HASH_PHASE_READY; + /* Reset suspension request flag */ + hhash->SuspendRequest = HAL_HASH_SUSPEND_NONE; + + /* Set the data type bit */ + MODIFY_REG(HASH->CR, HASH_CR_DATATYPE, hhash->Init.DataType); + /* Reset MDMAT bit */ + __HAL_HASH_RESET_MDMAT(); + /* Reset HASH handle status */ + hhash->Status = HAL_OK; + + /* Set the HASH state to Ready */ + hhash->State = HAL_HASH_STATE_READY; + + /* Initialise the error code */ + hhash->ErrorCode = HAL_HASH_ERROR_NONE; + + /* Return function status */ + return HAL_OK; +} + +/** + * @brief DeInitialize the HASH peripheral. + * @param hhash HASH handle. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_HASH_DeInit(HASH_HandleTypeDef *hhash) +{ + /* Check the HASH handle allocation */ + if (hhash == NULL) + { + return HAL_ERROR; + } + + /* Change the HASH state */ + hhash->State = HAL_HASH_STATE_BUSY; + + /* Set the default HASH phase */ + hhash->Phase = HAL_HASH_PHASE_READY; + + /* Reset HashInCount, HashITCounter and HashBuffSize */ + hhash->HashInCount = 0; + hhash->HashBuffSize = 0; + hhash->HashITCounter = 0; + /* Reset digest calculation bridle (MDMAT bit control) */ + hhash->DigestCalculationDisable = RESET; + +#if (USE_HAL_HASH_REGISTER_CALLBACKS == 1) + if (hhash->MspDeInitCallback == NULL) + { + hhash->MspDeInitCallback = HAL_HASH_MspDeInit; + } + + /* DeInit the low level hardware */ + hhash->MspDeInitCallback(hhash); +#else + /* DeInit the low level hardware: CLOCK, NVIC */ + HAL_HASH_MspDeInit(hhash); +#endif /* (USE_HAL_HASH_REGISTER_CALLBACKS) */ + + + /* Reset HASH handle status */ + hhash->Status = HAL_OK; + + /* Set the HASH state to Ready */ + hhash->State = HAL_HASH_STATE_RESET; + + /* Initialise the error code */ + hhash->ErrorCode = HAL_HASH_ERROR_NONE; + + /* Reset multi buffers accumulation flag */ + hhash->Accumulation = 0U; + + /* Return function status */ + return HAL_OK; +} + +/** + * @brief Initialize the HASH MSP. + * @param hhash HASH handle. + * @retval None + */ +__weak void HAL_HASH_MspInit(HASH_HandleTypeDef *hhash) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hhash); + + /* NOTE : This function should not be modified; when the callback is needed, + HAL_HASH_MspInit() can be implemented in the user file. + */ +} + +/** + * @brief DeInitialize the HASH MSP. + * @param hhash HASH handle. + * @retval None + */ +__weak void HAL_HASH_MspDeInit(HASH_HandleTypeDef *hhash) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hhash); + + /* NOTE : This function should not be modified; when the callback is needed, + HAL_HASH_MspDeInit() can be implemented in the user file. + */ +} + +/** + * @brief Input data transfer complete call back. + * @note HAL_HASH_InCpltCallback() is called when the complete input message + * has been fed to the Peripheral. This API is invoked only when input data are + * entered under interruption or through DMA. + * @note In case of HASH or HMAC multi-buffer DMA feeding case (MDMAT bit set), + * HAL_HASH_InCpltCallback() is called at the end of each buffer feeding + * to the Peripheral. + * @param hhash HASH handle. + * @retval None + */ +__weak void HAL_HASH_InCpltCallback(HASH_HandleTypeDef *hhash) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hhash); + + /* NOTE : This function should not be modified; when the callback is needed, + HAL_HASH_InCpltCallback() can be implemented in the user file. + */ +} + +/** + * @brief Digest computation complete call back. + * @note HAL_HASH_DgstCpltCallback() is used under interruption, is not + * relevant with DMA. + * @param hhash HASH handle. + * @retval None + */ +__weak void HAL_HASH_DgstCpltCallback(HASH_HandleTypeDef *hhash) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hhash); + + /* NOTE : This function should not be modified; when the callback is needed, + HAL_HASH_DgstCpltCallback() can be implemented in the user file. + */ +} + +/** + * @brief Error callback. + * @note Code user can resort to hhash->Status (HAL_ERROR, HAL_TIMEOUT,...) + * to retrieve the error type. + * @param hhash HASH handle. + * @retval None + */ +__weak void HAL_HASH_ErrorCallback(HASH_HandleTypeDef *hhash) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hhash); + + /* NOTE : This function should not be modified; when the callback is needed, + HAL_HASH_ErrorCallback() can be implemented in the user file. + */ +} + +#if (USE_HAL_HASH_REGISTER_CALLBACKS == 1) +/** + * @brief Register a User HASH Callback + * To be used instead of the weak (surcharged) predefined callback + * @param hhash HASH handle + * @param CallbackID ID of the callback to be registered + * This parameter can be one of the following values: + * @arg @ref HAL_HASH_INPUTCPLT_CB_ID HASH input completion Callback ID + * @arg @ref HAL_HASH_DGSTCPLT_CB_ID HASH digest computation completion Callback ID + * @arg @ref HAL_HASH_ERROR_CB_ID HASH error Callback ID + * @arg @ref HAL_HASH_MSPINIT_CB_ID HASH MspInit callback ID + * @arg @ref HAL_HASH_MSPDEINIT_CB_ID HASH MspDeInit callback ID + * @param pCallback pointer to the Callback function + * @retval status + */ +HAL_StatusTypeDef HAL_HASH_RegisterCallback(HASH_HandleTypeDef *hhash, HAL_HASH_CallbackIDTypeDef CallbackID, + pHASH_CallbackTypeDef pCallback) +{ + HAL_StatusTypeDef status = HAL_OK; + + if (pCallback == NULL) + { + /* Update the error code */ + hhash->ErrorCode |= HAL_HASH_ERROR_INVALID_CALLBACK; + return HAL_ERROR; + } + /* Process locked */ + __HAL_LOCK(hhash); + + if (HAL_HASH_STATE_READY == hhash->State) + { + switch (CallbackID) + { + case HAL_HASH_INPUTCPLT_CB_ID : + hhash->InCpltCallback = pCallback; + break; + + case HAL_HASH_DGSTCPLT_CB_ID : + hhash->DgstCpltCallback = pCallback; + break; + + case HAL_HASH_ERROR_CB_ID : + hhash->ErrorCallback = pCallback; + break; + + case HAL_HASH_MSPINIT_CB_ID : + hhash->MspInitCallback = pCallback; + break; + + case HAL_HASH_MSPDEINIT_CB_ID : + hhash->MspDeInitCallback = pCallback; + break; + + default : + /* Update the error code */ + hhash->ErrorCode |= HAL_HASH_ERROR_INVALID_CALLBACK; + /* update return status */ + status = HAL_ERROR; + break; + } + } + else if (HAL_HASH_STATE_RESET == hhash->State) + { + switch (CallbackID) + { + case HAL_HASH_MSPINIT_CB_ID : + hhash->MspInitCallback = pCallback; + break; + + case HAL_HASH_MSPDEINIT_CB_ID : + hhash->MspDeInitCallback = pCallback; + break; + + default : + /* Update the error code */ + hhash->ErrorCode |= HAL_HASH_ERROR_INVALID_CALLBACK; + /* update return status */ + status = HAL_ERROR; + break; + } + } + else + { + /* Update the error code */ + hhash->ErrorCode |= HAL_HASH_ERROR_INVALID_CALLBACK; + /* update return status */ + status = HAL_ERROR; + } + + /* Release Lock */ + __HAL_UNLOCK(hhash); + return status; +} + +/** + * @brief Unregister a HASH Callback + * HASH Callback is redirected to the weak (surcharged) predefined callback + * @param hhash HASH handle + * @param CallbackID ID of the callback to be unregistered + * This parameter can be one of the following values: + * @arg @ref HAL_HASH_INPUTCPLT_CB_ID HASH input completion Callback ID + * @arg @ref HAL_HASH_DGSTCPLT_CB_ID HASH digest computation completion Callback ID + * @arg @ref HAL_HASH_ERROR_CB_ID HASH error Callback ID + * @arg @ref HAL_HASH_MSPINIT_CB_ID HASH MspInit callback ID + * @arg @ref HAL_HASH_MSPDEINIT_CB_ID HASH MspDeInit callback ID + * @retval status + */ +HAL_StatusTypeDef HAL_HASH_UnRegisterCallback(HASH_HandleTypeDef *hhash, HAL_HASH_CallbackIDTypeDef CallbackID) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Process locked */ + __HAL_LOCK(hhash); + + if (HAL_HASH_STATE_READY == hhash->State) + { + switch (CallbackID) + { + case HAL_HASH_INPUTCPLT_CB_ID : + hhash->InCpltCallback = HAL_HASH_InCpltCallback; /* Legacy weak (surcharged) input completion callback */ + break; + + case HAL_HASH_DGSTCPLT_CB_ID : + hhash->DgstCpltCallback = HAL_HASH_DgstCpltCallback; /* Legacy weak (surcharged) digest computation + completion callback */ + break; + + case HAL_HASH_ERROR_CB_ID : + hhash->ErrorCallback = HAL_HASH_ErrorCallback; /* Legacy weak (surcharged) error callback */ + break; + + case HAL_HASH_MSPINIT_CB_ID : + hhash->MspInitCallback = HAL_HASH_MspInit; /* Legacy weak (surcharged) Msp Init */ + break; + + case HAL_HASH_MSPDEINIT_CB_ID : + hhash->MspDeInitCallback = HAL_HASH_MspDeInit; /* Legacy weak (surcharged) Msp DeInit */ + break; + + default : + /* Update the error code */ + hhash->ErrorCode |= HAL_HASH_ERROR_INVALID_CALLBACK; + /* update return status */ + status = HAL_ERROR; + break; + } + } + else if (HAL_HASH_STATE_RESET == hhash->State) + { + switch (CallbackID) + { + case HAL_HASH_MSPINIT_CB_ID : + hhash->MspInitCallback = HAL_HASH_MspInit; /* Legacy weak (surcharged) Msp Init */ + break; + + case HAL_HASH_MSPDEINIT_CB_ID : + hhash->MspDeInitCallback = HAL_HASH_MspDeInit; /* Legacy weak (surcharged) Msp DeInit */ + break; + + default : + /* Update the error code */ + hhash->ErrorCode |= HAL_HASH_ERROR_INVALID_CALLBACK; + /* update return status */ + status = HAL_ERROR; + break; + } + } + else + { + /* Update the error code */ + hhash->ErrorCode |= HAL_HASH_ERROR_INVALID_CALLBACK; + /* update return status */ + status = HAL_ERROR; + } + + /* Release Lock */ + __HAL_UNLOCK(hhash); + return status; +} +#endif /* USE_HAL_HASH_REGISTER_CALLBACKS */ + +/** + * @} + */ + +/** @defgroup HASH_Exported_Functions_Group2 HASH processing functions in polling mode + * @brief HASH processing functions using polling mode. + * +@verbatim + =============================================================================== + ##### Polling mode HASH processing functions ##### + =============================================================================== + [..] This section provides functions allowing to calculate in polling mode + the hash value using one of the following algorithms: + (+) MD5 + (++) HAL_HASH_MD5_Start() + (++) HAL_HASH_MD5_Accmlt() + (++) HAL_HASH_MD5_Accmlt_End() + (+) SHA1 + (++) HAL_HASH_SHA1_Start() + (++) HAL_HASH_SHA1_Accmlt() + (++) HAL_HASH_SHA1_Accmlt_End() + + [..] For a single buffer to be hashed, user can resort to HAL_HASH_xxx_Start(). + + [..] In case of multi-buffer HASH processing (a single digest is computed while + several buffers are fed to the Peripheral), the user can resort to successive calls + to HAL_HASH_xxx_Accumulate() and wrap-up the digest computation by a call + to HAL_HASH_xxx_Accumulate_End(). + +@endverbatim + * @{ + */ + +/** + * @brief Initialize the HASH peripheral in MD5 mode, next process pInBuffer then + * read the computed digest. + * @note 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. + * @param pOutBuffer pointer to the computed digest. Digest size is 16 bytes. + * @param Timeout Timeout value + * @retval HAL status + */ +HAL_StatusTypeDef HAL_HASH_MD5_Start(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, uint8_t *pOutBuffer, + uint32_t Timeout) +{ + return HASH_Start(hhash, pInBuffer, Size, pOutBuffer, Timeout, HASH_ALGOSELECTION_MD5); +} + +/** + * @brief If not already done, initialize the HASH peripheral in MD5 mode then + * processes pInBuffer. + * @note Consecutive calls to HAL_HASH_MD5_Accmlt() can be used to feed + * several input buffers back-to-back to the Peripheral that will yield a single + * HASH signature once all buffers have been entered. Wrap-up of input + * buffers feeding and retrieval of digest is done by a call to + * HAL_HASH_MD5_Accmlt_End(). + * @note Field hhash->Phase of HASH handle is tested to check whether or not + * the Peripheral has already been initialized. + * @note Digest is not retrieved by this API, user must resort to HAL_HASH_MD5_Accmlt_End() + * to read it, feeding at the same time the last input buffer to the Peripheral. + * @note The input buffer size (in bytes) must be a multiple of 4 otherwise, the + * HASH digest computation is corrupted. Only HAL_HASH_MD5_Accmlt_End() is able + * to manage the ending buffer with a length in bytes not a multiple of 4. + * @param hhash HASH handle. + * @param pInBuffer pointer to the input buffer (buffer to be hashed). + * @param Size length of the input buffer in bytes, must be a multiple of 4. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_HASH_MD5_Accmlt(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size) +{ + return HASH_Accumulate(hhash, pInBuffer, Size, HASH_ALGOSELECTION_MD5); +} + +/** + * @brief End computation of a single HASH signature after several calls to HAL_HASH_MD5_Accmlt() API. + * @note 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. + * @param pOutBuffer pointer to the computed digest. Digest size is 16 bytes. + * @param Timeout Timeout value + * @retval HAL status + */ +HAL_StatusTypeDef HAL_HASH_MD5_Accmlt_End(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, + uint8_t *pOutBuffer, uint32_t Timeout) +{ + return HASH_Start(hhash, pInBuffer, Size, pOutBuffer, Timeout, HASH_ALGOSELECTION_MD5); +} + +/** + * @brief Initialize the HASH peripheral in SHA1 mode, next process pInBuffer then + * read the computed digest. + * @note 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. + * @param pOutBuffer pointer to the computed digest. Digest size is 20 bytes. + * @param Timeout Timeout value + * @retval HAL status + */ +HAL_StatusTypeDef HAL_HASH_SHA1_Start(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, uint8_t *pOutBuffer, + uint32_t Timeout) +{ + return HASH_Start(hhash, pInBuffer, Size, pOutBuffer, Timeout, HASH_ALGOSELECTION_SHA1); +} + +/** + * @brief If not already done, initialize the HASH peripheral in SHA1 mode then + * processes pInBuffer. + * @note Consecutive calls to HAL_HASH_SHA1_Accmlt() can be used to feed + * several input buffers back-to-back to the Peripheral that will yield a single + * HASH signature once all buffers have been entered. Wrap-up of input + * buffers feeding and retrieval of digest is done by a call to + * HAL_HASH_SHA1_Accmlt_End(). + * @note Field hhash->Phase of HASH handle is tested to check whether or not + * the Peripheral has already been initialized. + * @note Digest is not retrieved by this API, user must resort to HAL_HASH_SHA1_Accmlt_End() + * to read it, feeding at the same time the last input buffer to the Peripheral. + * @note The input buffer size (in bytes) must be a multiple of 4 otherwise, the + * HASH digest computation is corrupted. Only HAL_HASH_SHA1_Accmlt_End() is able + * to manage the ending buffer with a length in bytes not a multiple of 4. + * @param hhash HASH handle. + * @param pInBuffer pointer to the input buffer (buffer to be hashed). + * @param Size length of the input buffer in bytes, must be a multiple of 4. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_HASH_SHA1_Accmlt(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size) +{ + return HASH_Accumulate(hhash, pInBuffer, Size, HASH_ALGOSELECTION_SHA1); +} + +/** + * @brief End computation of a single HASH signature after several calls to HAL_HASH_SHA1_Accmlt() API. + * @note 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. + * @param pOutBuffer pointer to the computed digest. Digest size is 20 bytes. + * @param Timeout Timeout value + * @retval HAL status + */ +HAL_StatusTypeDef HAL_HASH_SHA1_Accmlt_End(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, + uint8_t *pOutBuffer, uint32_t Timeout) +{ + return HASH_Start(hhash, pInBuffer, Size, pOutBuffer, Timeout, HASH_ALGOSELECTION_SHA1); +} + +/** + * @} + */ + +/** @defgroup HASH_Exported_Functions_Group3 HASH processing functions in interrupt mode + * @brief HASH processing functions using interrupt mode. + * +@verbatim + =============================================================================== + ##### Interruption mode HASH processing functions ##### + =============================================================================== + [..] This section provides functions allowing to calculate in interrupt mode + the hash value using one of the following algorithms: + (+) MD5 + (++) HAL_HASH_MD5_Start_IT() + (++) HAL_HASH_MD5_Accmlt_IT() + (++) HAL_HASH_MD5_Accmlt_End_IT() + (+) SHA1 + (++) HAL_HASH_SHA1_Start_IT() + (++) HAL_HASH_SHA1_Accmlt_IT() + (++) HAL_HASH_SHA1_Accmlt_End_IT() + + [..] API HAL_HASH_IRQHandler() manages each HASH interruption. + + [..] Note that HAL_HASH_IRQHandler() manages as well HASH Peripheral interruptions when in + HMAC processing mode. + + +@endverbatim + * @{ + */ + +/** + * @brief Initialize the HASH peripheral in MD5 mode, next process pInBuffer then + * read the computed digest in interruption mode. + * @note 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. + * @param pOutBuffer pointer to the computed digest. Digest size is 16 bytes. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_HASH_MD5_Start_IT(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, + uint8_t *pOutBuffer) +{ + return HASH_Start_IT(hhash, pInBuffer, Size, pOutBuffer, HASH_ALGOSELECTION_MD5); +} + +/** + * @brief If not already done, initialize the HASH peripheral in MD5 mode then + * processes pInBuffer in interruption mode. + * @note Consecutive calls to HAL_HASH_MD5_Accmlt_IT() can be used to feed + * several input buffers back-to-back to the Peripheral that will yield a single + * HASH signature once all buffers have been entered. Wrap-up of input + * buffers feeding and retrieval of digest is done by a call to + * HAL_HASH_MD5_Accmlt_End_IT(). + * @note Field hhash->Phase of HASH handle is tested to check whether or not + * the Peripheral has already been initialized. + * @note The input buffer size (in bytes) must be a multiple of 4 otherwise, the + * HASH digest computation is corrupted. Only HAL_HASH_MD5_Accmlt_End_IT() is able + * to manage the ending buffer with a length in bytes not a multiple of 4. + * @param hhash HASH handle. + * @param pInBuffer pointer to the input buffer (buffer to be hashed). + * @param Size length of the input buffer in bytes, must be a multiple of 4. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_HASH_MD5_Accmlt_IT(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size) +{ + return HASH_Accumulate_IT(hhash, pInBuffer, Size, HASH_ALGOSELECTION_MD5); +} + +/** + * @brief End computation of a single HASH signature after several calls to HAL_HASH_MD5_Accmlt_IT() API. + * @note 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. + * @param pOutBuffer pointer to the computed digest. Digest size is 16 bytes. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_HASH_MD5_Accmlt_End_IT(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, + uint8_t *pOutBuffer) +{ + return HASH_Start_IT(hhash, pInBuffer, Size, pOutBuffer, HASH_ALGOSELECTION_MD5); +} + +/** + * @brief Initialize the HASH peripheral in SHA1 mode, next process pInBuffer then + * read the computed digest in interruption mode. + * @note 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. + * @param pOutBuffer pointer to the computed digest. Digest size is 20 bytes. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_HASH_SHA1_Start_IT(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, + uint8_t *pOutBuffer) +{ + return HASH_Start_IT(hhash, pInBuffer, Size, pOutBuffer, HASH_ALGOSELECTION_SHA1); +} + + +/** + * @brief If not already done, initialize the HASH peripheral in SHA1 mode then + * processes pInBuffer in interruption mode. + * @note Consecutive calls to HAL_HASH_SHA1_Accmlt_IT() can be used to feed + * several input buffers back-to-back to the Peripheral that will yield a single + * HASH signature once all buffers have been entered. Wrap-up of input + * buffers feeding and retrieval of digest is done by a call to + * HAL_HASH_SHA1_Accmlt_End_IT(). + * @note Field hhash->Phase of HASH handle is tested to check whether or not + * the Peripheral has already been initialized. + * @note The input buffer size (in bytes) must be a multiple of 4 otherwise, the + * HASH digest computation is corrupted. Only HAL_HASH_SHA1_Accmlt_End_IT() is able + * to manage the ending buffer with a length in bytes not a multiple of 4. + * @param hhash HASH handle. + * @param pInBuffer pointer to the input buffer (buffer to be hashed). + * @param Size length of the input buffer in bytes, must be a multiple of 4. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_HASH_SHA1_Accmlt_IT(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size) +{ + return HASH_Accumulate_IT(hhash, pInBuffer, Size, HASH_ALGOSELECTION_SHA1); +} + +/** + * @brief End computation of a single HASH signature after several calls to HAL_HASH_SHA1_Accmlt_IT() API. + * @note 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. + * @param pOutBuffer pointer to the computed digest. Digest size is 20 bytes. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_HASH_SHA1_Accmlt_End_IT(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, + uint8_t *pOutBuffer) +{ + return HASH_Start_IT(hhash, pInBuffer, Size, pOutBuffer, HASH_ALGOSELECTION_SHA1); +} + +/** + * @brief Handle HASH interrupt request. + * @param hhash HASH handle. + * @note HAL_HASH_IRQHandler() handles interrupts in HMAC processing as well. + * @note In case of error reported during the HASH interruption processing, + * HAL_HASH_ErrorCallback() API is called so that user code can + * manage the error. The error type is available in hhash->Status field. + * @retval None + */ +void HAL_HASH_IRQHandler(HASH_HandleTypeDef *hhash) +{ + hhash->Status = HASH_IT(hhash); + if (hhash->Status != HAL_OK) + { + hhash->ErrorCode |= HAL_HASH_ERROR_IT; +#if (USE_HAL_HASH_REGISTER_CALLBACKS == 1) + hhash->ErrorCallback(hhash); +#else + HAL_HASH_ErrorCallback(hhash); +#endif /* USE_HAL_HASH_REGISTER_CALLBACKS */ + /* After error handling by code user, reset HASH handle HAL status */ + hhash->Status = HAL_OK; + } +} + +/** + * @} + */ + +/** @defgroup HASH_Exported_Functions_Group4 HASH processing functions in DMA mode + * @brief HASH processing functions using DMA mode. + * +@verbatim + =============================================================================== + ##### DMA mode HASH processing functions ##### + =============================================================================== + [..] This section provides functions allowing to calculate in DMA mode + the hash value using one of the following algorithms: + (+) MD5 + (++) HAL_HASH_MD5_Start_DMA() + (++) HAL_HASH_MD5_Finish() + (+) SHA1 + (++) HAL_HASH_SHA1_Start_DMA() + (++) HAL_HASH_SHA1_Finish() + + [..] When resorting to DMA mode to enter the data in the Peripheral, user must resort + to HAL_HASH_xxx_Start_DMA() then read the resulting digest with + HAL_HASH_xxx_Finish(). + [..] In case of multi-buffer HASH processing, MDMAT bit must first be set before + the successive calls to HAL_HASH_xxx_Start_DMA(). Then, MDMAT bit needs to be + reset before the last call to HAL_HASH_xxx_Start_DMA(). Digest is finally + retrieved thanks to HAL_HASH_xxx_Finish(). + +@endverbatim + * @{ + */ + +/** + * @brief Initialize the HASH peripheral in MD5 mode then initiate a DMA transfer + * to feed the input buffer to the Peripheral. + * @note Once the DMA transfer is finished, HAL_HASH_MD5_Finish() API must + * be called to retrieve the computed 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. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_HASH_MD5_Start_DMA(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size) +{ + return HASH_Start_DMA(hhash, pInBuffer, Size, HASH_ALGOSELECTION_MD5); +} + +/** + * @brief Return the computed digest in MD5 mode. + * @note The API waits for DCIS to be set then reads the computed digest. + * @note HAL_HASH_MD5_Finish() can be used as well to retrieve the digest in + * HMAC MD5 mode. + * @param hhash HASH handle. + * @param pOutBuffer pointer to the computed digest. Digest size is 16 bytes. + * @param Timeout Timeout value. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_HASH_MD5_Finish(HASH_HandleTypeDef *hhash, uint8_t *pOutBuffer, uint32_t Timeout) +{ + return HASH_Finish(hhash, pOutBuffer, Timeout); +} + +/** + * @brief Initialize the HASH peripheral in SHA1 mode then initiate a DMA transfer + * to feed the input buffer to the Peripheral. + * @note Once the DMA transfer is finished, HAL_HASH_SHA1_Finish() API must + * be called to retrieve the computed 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. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_HASH_SHA1_Start_DMA(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size) +{ + return HASH_Start_DMA(hhash, pInBuffer, Size, HASH_ALGOSELECTION_SHA1); +} + + +/** + * @brief Return the computed digest in SHA1 mode. + * @note The API waits for DCIS to be set then reads the computed digest. + * @note HAL_HASH_SHA1_Finish() can be used as well to retrieve the digest in + * HMAC SHA1 mode. + * @param hhash HASH handle. + * @param pOutBuffer pointer to the computed digest. Digest size is 20 bytes. + * @param Timeout Timeout value. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_HASH_SHA1_Finish(HASH_HandleTypeDef *hhash, uint8_t *pOutBuffer, uint32_t Timeout) +{ + return HASH_Finish(hhash, pOutBuffer, Timeout); +} + +/** + * @} + */ + +/** @defgroup HASH_Exported_Functions_Group5 HMAC processing functions in polling mode + * @brief HMAC processing functions using polling mode. + * +@verbatim + =============================================================================== + ##### Polling mode HMAC processing functions ##### + =============================================================================== + [..] This section provides functions allowing to calculate in polling mode + the HMAC value using one of the following algorithms: + (+) MD5 + (++) HAL_HMAC_MD5_Start() + (+) SHA1 + (++) HAL_HMAC_SHA1_Start() + + +@endverbatim + * @{ + */ + +/** + * @brief Initialize the HASH peripheral in HMAC MD5 mode, next process pInBuffer then + * read the computed digest. + * @note Digest is available in pOutBuffer. + * @note Same key is used for the inner and the outer hash functions; pointer to key and + * key size are respectively stored in hhash->Init.pKey and hhash->Init.KeySize. + * @param hhash HASH handle. + * @param pInBuffer pointer to the input buffer (buffer to be hashed). + * @param Size length of the input buffer in bytes. + * @param pOutBuffer pointer to the computed digest. Digest size is 16 bytes. + * @param Timeout Timeout value. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_HMAC_MD5_Start(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, uint8_t *pOutBuffer, + uint32_t Timeout) +{ + return HMAC_Start(hhash, pInBuffer, Size, pOutBuffer, Timeout, HASH_ALGOSELECTION_MD5); +} + +/** + * @brief Initialize the HASH peripheral in HMAC SHA1 mode, next process pInBuffer then + * read the computed digest. + * @note Digest is available in pOutBuffer. + * @note Same key is used for the inner and the outer hash functions; pointer to key and + * key size are respectively stored in hhash->Init.pKey and hhash->Init.KeySize. + * @param hhash HASH handle. + * @param pInBuffer pointer to the input buffer (buffer to be hashed). + * @param Size length of the input buffer in bytes. + * @param pOutBuffer pointer to the computed digest. Digest size is 20 bytes. + * @param Timeout Timeout value. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_HMAC_SHA1_Start(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, uint8_t *pOutBuffer, + uint32_t Timeout) +{ + return HMAC_Start(hhash, pInBuffer, Size, pOutBuffer, Timeout, HASH_ALGOSELECTION_SHA1); +} + +/** + * @} + */ + + +/** @defgroup HASH_Exported_Functions_Group6 HMAC processing functions in interrupt mode + * @brief HMAC processing functions using interrupt mode. + * +@verbatim + =============================================================================== + ##### Interrupt mode HMAC processing functions ##### + =============================================================================== + [..] This section provides functions allowing to calculate in interrupt mode + the HMAC value using one of the following algorithms: + (+) MD5 + (++) HAL_HMAC_MD5_Start_IT() + (+) SHA1 + (++) HAL_HMAC_SHA1_Start_IT() + +@endverbatim + * @{ + */ + + +/** + * @brief Initialize the HASH peripheral in HMAC MD5 mode, next process pInBuffer then + * read the computed digest in interrupt mode. + * @note Digest is available in pOutBuffer. + * @note Same key is used for the inner and the outer hash functions; pointer to key and + * key size are respectively stored in hhash->Init.pKey and hhash->Init.KeySize. + * @param hhash HASH handle. + * @param pInBuffer pointer to the input buffer (buffer to be hashed). + * @param Size length of the input buffer in bytes. + * @param pOutBuffer pointer to the computed digest. Digest size is 16 bytes. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_HMAC_MD5_Start_IT(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, + uint8_t *pOutBuffer) +{ + return HMAC_Start_IT(hhash, pInBuffer, Size, pOutBuffer, HASH_ALGOSELECTION_MD5); +} + +/** + * @brief Initialize the HASH peripheral in HMAC SHA1 mode, next process pInBuffer then + * read the computed digest in interrupt mode. + * @note Digest is available in pOutBuffer. + * @note Same key is used for the inner and the outer hash functions; pointer to key and + * key size are respectively stored in hhash->Init.pKey and hhash->Init.KeySize. + * @param hhash HASH handle. + * @param pInBuffer pointer to the input buffer (buffer to be hashed). + * @param Size length of the input buffer in bytes. + * @param pOutBuffer pointer to the computed digest. Digest size is 20 bytes. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_HMAC_SHA1_Start_IT(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, + uint8_t *pOutBuffer) +{ + return HMAC_Start_IT(hhash, pInBuffer, Size, pOutBuffer, HASH_ALGOSELECTION_SHA1); +} + +/** + * @} + */ + + + +/** @defgroup HASH_Exported_Functions_Group7 HMAC processing functions in DMA mode + * @brief HMAC processing functions using DMA modes. + * +@verbatim + =============================================================================== + ##### DMA mode HMAC processing functions ##### + =============================================================================== + [..] This section provides functions allowing to calculate in DMA mode + the HMAC value using one of the following algorithms: + (+) MD5 + (++) HAL_HMAC_MD5_Start_DMA() + (+) SHA1 + (++) HAL_HMAC_SHA1_Start_DMA() + + [..] When resorting to DMA mode to enter the data in the Peripheral for HMAC processing, + user must resort to HAL_HMAC_xxx_Start_DMA() then read the resulting digest + with HAL_HASH_xxx_Finish(). + +@endverbatim + * @{ + */ + + +/** + * @brief Initialize the HASH peripheral in HMAC MD5 mode then initiate the required + * DMA transfers to feed the key and the input buffer to the Peripheral. + * @note Once the DMA transfers are finished (indicated by hhash->State set back + * to HAL_HASH_STATE_READY), HAL_HASH_MD5_Finish() API must be called to retrieve + * the computed digest. + * @note Same key is used for the inner and the outer hash functions; pointer to key and + * key size are respectively stored in hhash->Init.pKey and hhash->Init.KeySize. + * @note If MDMAT bit is set before calling this function (multi-buffer + * HASH processing case), the input buffer size (in bytes) must be + * a multiple of 4 otherwise, the HASH digest computation is corrupted. + * For the processing of the last buffer of the thread, MDMAT bit must + * be reset and the buffer length (in bytes) doesn't have to be a + * multiple of 4. + * @param hhash HASH handle. + * @param pInBuffer pointer to the input buffer (buffer to be hashed). + * @param Size length of the input buffer in bytes. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_HMAC_MD5_Start_DMA(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size) +{ + return HMAC_Start_DMA(hhash, pInBuffer, Size, HASH_ALGOSELECTION_MD5); +} + + +/** + * @brief Initialize the HASH peripheral in HMAC SHA1 mode then initiate the required + * DMA transfers to feed the key and the input buffer to the Peripheral. + * @note Once the DMA transfers are finished (indicated by hhash->State set back + * to HAL_HASH_STATE_READY), HAL_HASH_SHA1_Finish() API must be called to retrieve + * the computed digest. + * @note Same key is used for the inner and the outer hash functions; pointer to key and + * key size are respectively stored in hhash->Init.pKey and hhash->Init.KeySize. + * @note If MDMAT bit is set before calling this function (multi-buffer + * HASH processing case), the input buffer size (in bytes) must be + * a multiple of 4 otherwise, the HASH digest computation is corrupted. + * For the processing of the last buffer of the thread, MDMAT bit must + * be reset and the buffer length (in bytes) doesn't have to be a + * multiple of 4. + * @param hhash HASH handle. + * @param pInBuffer pointer to the input buffer (buffer to be hashed). + * @param Size length of the input buffer in bytes. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_HMAC_SHA1_Start_DMA(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size) +{ + return HMAC_Start_DMA(hhash, pInBuffer, Size, HASH_ALGOSELECTION_SHA1); +} + +/** + * @} + */ + +/** @defgroup HASH_Exported_Functions_Group8 Peripheral states functions + * @brief Peripheral State functions. + * +@verbatim + =============================================================================== + ##### Peripheral State methods ##### + =============================================================================== + [..] + This section permits to get in run-time the state and the peripheral handle + status of the peripheral: + (+) HAL_HASH_GetState() + (+) HAL_HASH_GetStatus() + + [..] + Additionally, this subsection provides functions allowing to save and restore + the HASH or HMAC processing context in case of calculation suspension: + (+) HAL_HASH_ContextSaving() + (+) HAL_HASH_ContextRestoring() + + [..] + This subsection provides functions allowing to suspend the HASH processing + (+) when input are fed to the Peripheral by software + (++) HAL_HASH_SwFeed_ProcessSuspend() + (+) when input are fed to the Peripheral by DMA + (++) HAL_HASH_DMAFeed_ProcessSuspend() + + + +@endverbatim + * @{ + */ + +/** + * @brief Return the HASH handle state. + * @note The API yields the current state of the handle (BUSY, READY,...). + * @param hhash HASH handle. + * @retval HAL HASH state + */ +HAL_HASH_StateTypeDef HAL_HASH_GetState(HASH_HandleTypeDef *hhash) +{ + return hhash->State; +} + + +/** + * @brief Return the HASH HAL status. + * @note The API yields the HAL status of the handle: it is the result of the + * latest HASH processing and allows to report any issue (e.g. HAL_TIMEOUT). + * @param hhash HASH handle. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_HASH_GetStatus(HASH_HandleTypeDef *hhash) +{ + return hhash->Status; +} + +/** + * @brief Save the HASH context in case of processing suspension. + * @param hhash HASH handle. + * @param pMemBuffer pointer to the memory buffer where the HASH context + * is saved. + * @note The IMR, STR, CR then all the CSR registers are saved + * in that order. Only the r/w bits are read to be restored later on. + * @note By default, all the context swap registers (there are + * HASH_NUMBER_OF_CSR_REGISTERS of those) are saved. + * @note pMemBuffer points to a buffer allocated by the user. The buffer size + * must be at least (HASH_NUMBER_OF_CSR_REGISTERS + 3) * 4 uint8 long. + * @retval None + */ +void HAL_HASH_ContextSaving(HASH_HandleTypeDef *hhash, uint8_t *pMemBuffer) +{ + uint32_t mem_ptr = (uint32_t)pMemBuffer; + uint32_t csr_ptr = (uint32_t)HASH->CSR; + uint32_t i; + + /* Prevent unused argument(s) compilation warning */ + UNUSED(hhash); + + /* Save IMR register content */ + *(uint32_t *)(mem_ptr) = READ_BIT(HASH->IMR, HASH_IT_DINI | HASH_IT_DCI); + mem_ptr += 4U; + /* Save STR register content */ + *(uint32_t *)(mem_ptr) = READ_BIT(HASH->STR, HASH_STR_NBLW); + mem_ptr += 4U; + /* Save CR register content */ + *(uint32_t *)(mem_ptr) = READ_BIT(HASH->CR, HASH_CR_DMAE | HASH_CR_DATATYPE | HASH_CR_MODE | HASH_CR_ALGO | + HASH_CR_LKEY | HASH_CR_MDMAT); + mem_ptr += 4U; + /* By default, save all CSRs registers */ + for (i = HASH_NUMBER_OF_CSR_REGISTERS; i > 0U; i--) + { + *(uint32_t *)(mem_ptr) = *(uint32_t *)(csr_ptr); + mem_ptr += 4U; + csr_ptr += 4U; + } +} + + +/** + * @brief Restore the HASH context in case of processing resumption. + * @param hhash HASH handle. + * @param pMemBuffer pointer to the memory buffer where the HASH context + * is stored. + * @note The IMR, STR, CR then all the CSR registers are restored + * in that order. Only the r/w bits are restored. + * @note By default, all the context swap registers (HASH_NUMBER_OF_CSR_REGISTERS + * of those) are restored (all of them have been saved by default + * beforehand). + * @retval None + */ +void HAL_HASH_ContextRestoring(HASH_HandleTypeDef *hhash, uint8_t *pMemBuffer) +{ + uint32_t mem_ptr = (uint32_t)pMemBuffer; + uint32_t csr_ptr = (uint32_t)HASH->CSR; + uint32_t i; + + /* Prevent unused argument(s) compilation warning */ + UNUSED(hhash); + + /* Restore IMR register content */ + WRITE_REG(HASH->IMR, (*(uint32_t *)(mem_ptr))); + mem_ptr += 4U; + /* Restore STR register content */ + WRITE_REG(HASH->STR, (*(uint32_t *)(mem_ptr))); + mem_ptr += 4U; + /* Restore CR register content */ + WRITE_REG(HASH->CR, (*(uint32_t *)(mem_ptr))); + mem_ptr += 4U; + + /* Reset the HASH processor before restoring the Context + Swap Registers (CSR) */ + __HAL_HASH_INIT(); + + /* By default, restore all CSR registers */ + for (i = HASH_NUMBER_OF_CSR_REGISTERS; i > 0U; i--) + { + WRITE_REG((*(uint32_t *)(csr_ptr)), (*(uint32_t *)(mem_ptr))); + mem_ptr += 4U; + csr_ptr += 4U; + } +} + + +/** + * @brief Initiate HASH processing suspension when in polling or interruption mode. + * @param hhash HASH handle. + * @note Set the handle field SuspendRequest to the appropriate value so that + * the on-going HASH processing is suspended as soon as the required + * conditions are met. Note that the actual suspension is carried out + * by the functions HASH_WriteData() in polling mode and HASH_IT() in + * interruption mode. + * @retval None + */ +void HAL_HASH_SwFeed_ProcessSuspend(HASH_HandleTypeDef *hhash) +{ + /* Set Handle Suspend Request field */ + hhash->SuspendRequest = HAL_HASH_SUSPEND; +} + +/** + * @brief Suspend the HASH processing when in DMA mode. + * @param hhash HASH handle. + * @note When suspension attempt occurs at the very end of a DMA transfer and + * all the data have already been entered in the Peripheral, hhash->State is + * set to HAL_HASH_STATE_READY and the API returns HAL_ERROR. It is + * recommended to wrap-up the processing in reading the digest as usual. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_HASH_DMAFeed_ProcessSuspend(HASH_HandleTypeDef *hhash) +{ + uint32_t tmp_remaining_DMATransferSize_inWords; + uint32_t tmp_initial_DMATransferSize_inWords; + uint32_t tmp_words_already_pushed; + + if (hhash->State == HAL_HASH_STATE_READY) + { + return HAL_ERROR; + } + else + { + + /* Make sure there is enough time to suspend the processing */ + tmp_remaining_DMATransferSize_inWords = ((DMA_Stream_TypeDef *)hhash->hdmain->Instance)->NDTR; + + if (tmp_remaining_DMATransferSize_inWords <= HASH_DMA_SUSPENSION_WORDS_LIMIT) + { + /* No suspension attempted since almost to the end of the transferred data. */ + /* Best option for user code is to wrap up low priority message hashing */ + return HAL_ERROR; + } + + /* Wait for BUSY flag to be reset */ + if (HASH_WaitOnFlagUntilTimeout(hhash, HASH_FLAG_BUSY, SET, HASH_TIMEOUTVALUE) != HAL_OK) + { + return HAL_TIMEOUT; + } + + if (__HAL_HASH_GET_FLAG(HASH_FLAG_DCIS) != RESET) + { + return HAL_ERROR; + } + + /* Wait for BUSY flag to be set */ + if (HASH_WaitOnFlagUntilTimeout(hhash, HASH_FLAG_BUSY, RESET, HASH_TIMEOUTVALUE) != HAL_OK) + { + return HAL_TIMEOUT; + } + /* Disable DMA channel */ + /* Note that the Abort function will + - Clear the transfer error flags + - Unlock + - Set the State + */ + if (HAL_DMA_Abort(hhash->hdmain) != HAL_OK) + { + return HAL_ERROR; + } + + /* Clear DMAE bit */ + CLEAR_BIT(HASH->CR, HASH_CR_DMAE); + + /* Wait for BUSY flag to be reset */ + if (HASH_WaitOnFlagUntilTimeout(hhash, HASH_FLAG_BUSY, SET, HASH_TIMEOUTVALUE) != HAL_OK) + { + return HAL_TIMEOUT; + } + + if (__HAL_HASH_GET_FLAG(HASH_FLAG_DCIS) != RESET) + { + return HAL_ERROR; + } + + /* At this point, DMA interface is disabled and no transfer is on-going */ + /* Retrieve from the DMA handle how many words remain to be written */ + tmp_remaining_DMATransferSize_inWords = ((DMA_Stream_TypeDef *)hhash->hdmain->Instance)->NDTR; + + if (tmp_remaining_DMATransferSize_inWords == 0U) + { + /* All the DMA transfer is actually done. Suspension occurred at the very end + of the transfer. Either the digest computation is about to start (HASH case) + or processing is about to move from one step to another (HMAC case). + In both cases, the processing can't be suspended at this point. It is + safer to + - retrieve the low priority block digest before starting the high + priority block processing (HASH case) + - re-attempt a new suspension (HMAC case) + */ + return HAL_ERROR; + } + else + { + + /* Compute how many words were supposed to be transferred by DMA */ + tmp_initial_DMATransferSize_inWords = (((hhash->HashInCount % 4U) != 0U) ? \ + ((hhash->HashInCount + 3U) / 4U) : (hhash->HashInCount / 4U)); + + /* If discrepancy between the number of words reported by DMA Peripheral and + the numbers of words entered as reported by HASH Peripheral, correct it */ + /* tmp_words_already_pushed reflects the number of words that were already pushed before + the start of DMA transfer (multi-buffer processing case) */ + tmp_words_already_pushed = hhash->NbWordsAlreadyPushed; + if (((tmp_words_already_pushed + tmp_initial_DMATransferSize_inWords - \ + tmp_remaining_DMATransferSize_inWords) % 16U) != HASH_NBW_PUSHED()) + { + tmp_remaining_DMATransferSize_inWords--; /* one less word to be transferred again */ + } + + /* Accordingly, update the input pointer that points at the next word to be + transferred to the Peripheral by DMA */ + hhash->pHashInBuffPtr += 4U * (tmp_initial_DMATransferSize_inWords - tmp_remaining_DMATransferSize_inWords) ; + + /* And store in HashInCount the remaining size to transfer (in bytes) */ + hhash->HashInCount = 4U * tmp_remaining_DMATransferSize_inWords; + + } + + /* Set State as suspended */ + hhash->State = HAL_HASH_STATE_SUSPENDED; + + return HAL_OK; + + } +} + +/** + * @brief Return the HASH handle error code. + * @param hhash pointer to a HASH_HandleTypeDef structure. + * @retval HASH Error Code + */ +uint32_t HAL_HASH_GetError(HASH_HandleTypeDef *hhash) +{ + /* Return HASH Error Code */ + return hhash->ErrorCode; +} +/** + * @} + */ + + +/** + * @} + */ + +/** @defgroup HASH_Private_Functions HASH Private Functions + * @{ + */ + +/** + * @brief DMA HASH Input Data transfer completion callback. + * @param hdma DMA handle. + * @note In case of HMAC processing, HASH_DMAXferCplt() initiates + * the next DMA transfer for the following HMAC step. + * @retval None + */ +static void HASH_DMAXferCplt(DMA_HandleTypeDef *hdma) +{ + HASH_HandleTypeDef *hhash = (HASH_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent; + uint32_t inputaddr; + uint32_t buffersize; + HAL_StatusTypeDef status; + + if (hhash->State != HAL_HASH_STATE_SUSPENDED) + { + + /* Disable the DMA transfer */ + CLEAR_BIT(HASH->CR, HASH_CR_DMAE); + + if (READ_BIT(HASH->CR, HASH_CR_MODE) == 0U) + { + /* If no HMAC processing, input data transfer is now over */ + + /* Change the HASH state to ready */ + hhash->State = HAL_HASH_STATE_READY; + + /* Call Input data transfer complete call back */ +#if (USE_HAL_HASH_REGISTER_CALLBACKS == 1) + hhash->InCpltCallback(hhash); +#else + HAL_HASH_InCpltCallback(hhash); +#endif /* USE_HAL_HASH_REGISTER_CALLBACKS */ + + } + else + { + /* HMAC processing: depending on the current HMAC step and whether or + not multi-buffer processing is on-going, the next step is initiated + and MDMAT bit is set. */ + + + if (hhash->Phase == HAL_HASH_PHASE_HMAC_STEP_3) + { + /* This is the end of HMAC processing */ + + /* Change the HASH state to ready */ + hhash->State = HAL_HASH_STATE_READY; + + /* Call Input data transfer complete call back + (note that the last DMA transfer was that of the key + for the outer HASH operation). */ +#if (USE_HAL_HASH_REGISTER_CALLBACKS == 1) + hhash->InCpltCallback(hhash); +#else + HAL_HASH_InCpltCallback(hhash); +#endif /* USE_HAL_HASH_REGISTER_CALLBACKS */ + + return; + } + else if (hhash->Phase == HAL_HASH_PHASE_HMAC_STEP_1) + { + inputaddr = (uint32_t)hhash->pHashMsgBuffPtr; /* DMA transfer start address */ + buffersize = hhash->HashBuffSize; /* DMA transfer size (in bytes) */ + hhash->Phase = HAL_HASH_PHASE_HMAC_STEP_2; /* Move phase from Step 1 to Step 2 */ + + /* In case of suspension request, save the new starting parameters */ + hhash->HashInCount = hhash->HashBuffSize; /* Initial DMA transfer size (in bytes) */ + hhash->pHashInBuffPtr = hhash->pHashMsgBuffPtr ; /* DMA transfer start address */ + + hhash->NbWordsAlreadyPushed = 0U; /* Reset number of words already pushed */ + /* Check whether or not digest calculation must be disabled (in case of multi-buffer HMAC processing) */ + if (hhash->DigestCalculationDisable != RESET) + { + /* Digest calculation is disabled: Step 2 must start with MDMAT bit set, + no digest calculation will be triggered at the end of the input buffer feeding to the Peripheral */ + __HAL_HASH_SET_MDMAT(); + } + } + else /*case (hhash->Phase == HAL_HASH_PHASE_HMAC_STEP_2)*/ + { + if (hhash->DigestCalculationDisable != RESET) + { + /* No automatic move to Step 3 as a new message buffer will be fed to the Peripheral + (case of multi-buffer HMAC processing): + DCAL must not be set. + Phase remains in Step 2, MDMAT remains set at this point. + Change the HASH state to ready and call Input data transfer complete call back. */ + hhash->State = HAL_HASH_STATE_READY; +#if (USE_HAL_HASH_REGISTER_CALLBACKS == 1) + hhash->InCpltCallback(hhash); +#else + HAL_HASH_InCpltCallback(hhash); +#endif /* USE_HAL_HASH_REGISTER_CALLBACKS */ + return ; + } + else + { + /* Digest calculation is not disabled (case of single buffer input or last buffer + of multi-buffer HMAC processing) */ + inputaddr = (uint32_t)hhash->Init.pKey; /* DMA transfer start address */ + buffersize = hhash->Init.KeySize; /* DMA transfer size (in bytes) */ + hhash->Phase = HAL_HASH_PHASE_HMAC_STEP_3; /* Move phase from Step 2 to Step 3 */ + /* In case of suspension request, save the new starting parameters */ + hhash->HashInCount = hhash->Init.KeySize; /* Initial size for second DMA transfer (input data) */ + hhash->pHashInBuffPtr = hhash->Init.pKey ; /* address passed to DMA, now entering data message */ + + hhash->NbWordsAlreadyPushed = 0U; /* Reset number of words already pushed */ + } + } + + /* Configure the Number of valid bits in last word of the message */ + __HAL_HASH_SET_NBVALIDBITS(buffersize); + + /* Set the HASH DMA transfer completion call back */ + hhash->hdmain->XferCpltCallback = HASH_DMAXferCplt; + + /* Enable the DMA In DMA stream */ + status = HAL_DMA_Start_IT(hhash->hdmain, inputaddr, (uint32_t)&HASH->DIN, \ + (((buffersize % 4U) != 0U) ? ((buffersize + (4U - (buffersize % 4U))) / 4U) : \ + (buffersize / 4U))); + + /* Enable DMA requests */ + SET_BIT(HASH->CR, HASH_CR_DMAE); + + /* Return function status */ + if (status != HAL_OK) + { + /* Update HASH state machine to error */ + hhash->State = HAL_HASH_STATE_ERROR; + } + else + { + /* Change HASH state */ + hhash->State = HAL_HASH_STATE_BUSY; + } + } + } + + return; +} + +/** + * @brief DMA HASH communication error callback. + * @param hdma DMA handle. + * @note HASH_DMAError() callback invokes HAL_HASH_ErrorCallback() that + * can contain user code to manage the error. + * @retval None + */ +static void HASH_DMAError(DMA_HandleTypeDef *hdma) +{ + HASH_HandleTypeDef *hhash = (HASH_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent; + + if (hhash->State != HAL_HASH_STATE_SUSPENDED) + { + hhash->ErrorCode |= HAL_HASH_ERROR_DMA; + /* Set HASH state to ready to prevent any blocking issue in user code + present in HAL_HASH_ErrorCallback() */ + hhash->State = HAL_HASH_STATE_READY; + /* Set HASH handle status to error */ + hhash->Status = HAL_ERROR; +#if (USE_HAL_HASH_REGISTER_CALLBACKS == 1) + hhash->ErrorCallback(hhash); +#else + HAL_HASH_ErrorCallback(hhash); +#endif /* USE_HAL_HASH_REGISTER_CALLBACKS */ + /* After error handling by code user, reset HASH handle HAL status */ + hhash->Status = HAL_OK; + + } +} + +/** + * @brief Feed the input buffer to the HASH Peripheral. + * @param hhash HASH handle. + * @param pInBuffer pointer to input buffer. + * @param Size the size of input buffer in bytes. + * @note HASH_WriteData() regularly reads hhash->SuspendRequest to check whether + * or not the HASH processing must be suspended. If this is the case, the + * processing is suspended when possible and the Peripheral feeding point reached at + * suspension time is stored in the handle for resumption later on. + * @retval HAL status + */ +static HAL_StatusTypeDef HASH_WriteData(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size) +{ + uint32_t buffercounter; + __IO uint32_t inputaddr = (uint32_t) pInBuffer; + + for (buffercounter = 0U; buffercounter < Size; buffercounter += 4U) + { + /* Write input data 4 bytes at a time */ + HASH->DIN = *(uint32_t *)inputaddr; + inputaddr += 4U; + + /* If the suspension flag has been raised and if the processing is not about + to end, suspend processing */ + if ((hhash->SuspendRequest == HAL_HASH_SUSPEND) && ((buffercounter + 4U) < Size)) + { + /* wait for flag BUSY not set before Wait for DINIS = 1*/ + if (buffercounter >= 64U) + { + if (HASH_WaitOnFlagUntilTimeout(hhash, HASH_FLAG_BUSY, SET, HASH_TIMEOUTVALUE) != HAL_OK) + { + return HAL_TIMEOUT; + } + } + /* Wait for DINIS = 1, which occurs when 16 32-bit locations are free + in the input buffer */ + if (__HAL_HASH_GET_FLAG(HASH_FLAG_DINIS)) + { + /* Reset SuspendRequest */ + hhash->SuspendRequest = HAL_HASH_SUSPEND_NONE; + + /* Depending whether the key or the input data were fed to the Peripheral, the feeding point + reached at suspension time is not saved in the same handle fields */ + if ((hhash->Phase == HAL_HASH_PHASE_PROCESS) || (hhash->Phase == HAL_HASH_PHASE_HMAC_STEP_2)) + { + /* Save current reading and writing locations of Input and Output buffers */ + hhash->pHashInBuffPtr = (uint8_t *)inputaddr; + /* Save the number of bytes that remain to be processed at this point */ + hhash->HashInCount = Size - (buffercounter + 4U); + } + else if ((hhash->Phase == HAL_HASH_PHASE_HMAC_STEP_1) || (hhash->Phase == HAL_HASH_PHASE_HMAC_STEP_3)) + { + /* Save current reading and writing locations of Input and Output buffers */ + hhash->pHashKeyBuffPtr = (uint8_t *)inputaddr; + /* Save the number of bytes that remain to be processed at this point */ + hhash->HashKeyCount = Size - (buffercounter + 4U); + } + else + { + /* Unexpected phase: unlock process and report error */ + hhash->State = HAL_HASH_STATE_READY; + __HAL_UNLOCK(hhash); + return HAL_ERROR; + } + + /* Set the HASH state to Suspended and exit to stop entering data */ + hhash->State = HAL_HASH_STATE_SUSPENDED; + + return HAL_OK; + } /* if (__HAL_HASH_GET_FLAG(HASH_FLAG_DINIS)) */ + } /* if ((hhash->SuspendRequest == HAL_HASH_SUSPEND) && ((buffercounter+4) < Size)) */ + } /* for(buffercounter = 0; buffercounter < Size; buffercounter+=4) */ + + /* At this point, all the data have been entered to the Peripheral: exit */ + return HAL_OK; +} + +/** + * @brief Retrieve the message digest. + * @param pMsgDigest pointer to the computed digest. + * @param Size message digest size in bytes. + * @retval None + */ +static void HASH_GetDigest(uint8_t *pMsgDigest, uint8_t Size) +{ + uint32_t msgdigest = (uint32_t)pMsgDigest; + + switch (Size) + { + /* Read the message digest */ + case 16: /* MD5 */ + *(uint32_t *)(msgdigest) = __REV(HASH->HR[0]); + msgdigest += 4U; + *(uint32_t *)(msgdigest) = __REV(HASH->HR[1]); + msgdigest += 4U; + *(uint32_t *)(msgdigest) = __REV(HASH->HR[2]); + msgdigest += 4U; + *(uint32_t *)(msgdigest) = __REV(HASH->HR[3]); + break; + case 20: /* SHA1 */ + *(uint32_t *)(msgdigest) = __REV(HASH->HR[0]); + msgdigest += 4U; + *(uint32_t *)(msgdigest) = __REV(HASH->HR[1]); + msgdigest += 4U; + *(uint32_t *)(msgdigest) = __REV(HASH->HR[2]); + msgdigest += 4U; + *(uint32_t *)(msgdigest) = __REV(HASH->HR[3]); + msgdigest += 4U; + *(uint32_t *)(msgdigest) = __REV(HASH->HR[4]); + break; + case 28: /* SHA224 */ + *(uint32_t *)(msgdigest) = __REV(HASH->HR[0]); + msgdigest += 4U; + *(uint32_t *)(msgdigest) = __REV(HASH->HR[1]); + msgdigest += 4U; + *(uint32_t *)(msgdigest) = __REV(HASH->HR[2]); + msgdigest += 4U; + *(uint32_t *)(msgdigest) = __REV(HASH->HR[3]); + msgdigest += 4U; + *(uint32_t *)(msgdigest) = __REV(HASH->HR[4]); + msgdigest += 4U; + *(uint32_t *)(msgdigest) = __REV(HASH_DIGEST->HR[5]); + msgdigest += 4U; + *(uint32_t *)(msgdigest) = __REV(HASH_DIGEST->HR[6]); + break; + case 32: /* SHA256 */ + *(uint32_t *)(msgdigest) = __REV(HASH->HR[0]); + msgdigest += 4U; + *(uint32_t *)(msgdigest) = __REV(HASH->HR[1]); + msgdigest += 4U; + *(uint32_t *)(msgdigest) = __REV(HASH->HR[2]); + msgdigest += 4U; + *(uint32_t *)(msgdigest) = __REV(HASH->HR[3]); + msgdigest += 4U; + *(uint32_t *)(msgdigest) = __REV(HASH->HR[4]); + msgdigest += 4U; + *(uint32_t *)(msgdigest) = __REV(HASH_DIGEST->HR[5]); + msgdigest += 4U; + *(uint32_t *)(msgdigest) = __REV(HASH_DIGEST->HR[6]); + msgdigest += 4U; + *(uint32_t *)(msgdigest) = __REV(HASH_DIGEST->HR[7]); + break; + default: + break; + } +} + + + +/** + * @brief Handle HASH processing Timeout. + * @param hhash HASH handle. + * @param Flag specifies the HASH flag to check. + * @param Status the Flag status (SET or RESET). + * @param Timeout Timeout duration. + * @retval HAL status + */ +static HAL_StatusTypeDef HASH_WaitOnFlagUntilTimeout(HASH_HandleTypeDef *hhash, uint32_t Flag, FlagStatus Status, + uint32_t Timeout) +{ + uint32_t tickstart = HAL_GetTick(); + + /* Wait until flag is set */ + if (Status == RESET) + { + while (__HAL_HASH_GET_FLAG(Flag) == RESET) + { + /* Check for the Timeout */ + if (Timeout != HAL_MAX_DELAY) + { + if (((HAL_GetTick() - tickstart) > Timeout) || (Timeout == 0U)) + { + /* Set State to Ready to be able to restart later on */ + hhash->State = HAL_HASH_STATE_READY; + /* Store time out issue in handle status */ + hhash->Status = HAL_TIMEOUT; + + /* Process Unlocked */ + __HAL_UNLOCK(hhash); + + return HAL_TIMEOUT; + } + } + } + } + else + { + while (__HAL_HASH_GET_FLAG(Flag) != RESET) + { + /* Check for the Timeout */ + if (Timeout != HAL_MAX_DELAY) + { + if (((HAL_GetTick() - tickstart) > Timeout) || (Timeout == 0U)) + { + /* Set State to Ready to be able to restart later on */ + hhash->State = HAL_HASH_STATE_READY; + /* Store time out issue in handle status */ + hhash->Status = HAL_TIMEOUT; + + /* Process Unlocked */ + __HAL_UNLOCK(hhash); + + return HAL_TIMEOUT; + } + } + } + } + return HAL_OK; +} + + +/** + * @brief HASH processing in interruption mode. + * @param hhash HASH handle. + * @note HASH_IT() regularly reads hhash->SuspendRequest to check whether + * or not the HASH processing must be suspended. If this is the case, the + * processing is suspended when possible and the Peripheral feeding point reached at + * suspension time is stored in the handle for resumption later on. + * @retval HAL status + */ +static HAL_StatusTypeDef HASH_IT(HASH_HandleTypeDef *hhash) +{ + if (hhash->State == HAL_HASH_STATE_BUSY) + { + /* ITCounter must not be equal to 0 at this point. Report an error if this is the case. */ + if (hhash->HashITCounter == 0U) + { + /* Disable Interrupts */ + __HAL_HASH_DISABLE_IT(HASH_IT_DINI | HASH_IT_DCI); + /* HASH state set back to Ready to prevent any issue in user code + present in HAL_HASH_ErrorCallback() */ + hhash->State = HAL_HASH_STATE_READY; + return HAL_ERROR; + } + else if (hhash->HashITCounter == 1U) + { + /* This is the first call to HASH_IT, the first input data are about to be + entered in the Peripheral. A specific processing is carried out at this point to + start-up the processing. */ + hhash->HashITCounter = 2U; + } + else + { + /* Cruise speed reached, HashITCounter remains equal to 3 until the end of + the HASH processing or the end of the current step for HMAC processing. */ + hhash->HashITCounter = 3U; + } + + /* If digest is ready */ + if (__HAL_HASH_GET_FLAG(HASH_FLAG_DCIS)) + { + /* Read the digest */ + HASH_GetDigest(hhash->pHashOutBuffPtr, HASH_DIGEST_LENGTH()); + + /* Disable Interrupts */ + __HAL_HASH_DISABLE_IT(HASH_IT_DINI | HASH_IT_DCI); + /* Change the HASH state */ + hhash->State = HAL_HASH_STATE_READY; + /* Reset HASH state machine */ + hhash->Phase = HAL_HASH_PHASE_READY; + /* Call digest computation complete call back */ +#if (USE_HAL_HASH_REGISTER_CALLBACKS == 1) + hhash->DgstCpltCallback(hhash); +#else + HAL_HASH_DgstCpltCallback(hhash); +#endif /* USE_HAL_HASH_REGISTER_CALLBACKS */ + + return HAL_OK; + } + + /* If Peripheral ready to accept new data */ + if (__HAL_HASH_GET_FLAG(HASH_FLAG_DINIS)) + { + + /* If the suspension flag has been raised and if the processing is not about + to end, suspend processing */ + if ((hhash->HashInCount != 0U) && (hhash->SuspendRequest == HAL_HASH_SUSPEND)) + { + /* Disable Interrupts */ + __HAL_HASH_DISABLE_IT(HASH_IT_DINI | HASH_IT_DCI); + + /* Reset SuspendRequest */ + hhash->SuspendRequest = HAL_HASH_SUSPEND_NONE; + + /* Change the HASH state */ + hhash->State = HAL_HASH_STATE_SUSPENDED; + + return HAL_OK; + } + + /* Enter input data in the Peripheral through HASH_Write_Block_Data() call and + check whether the digest calculation has been triggered */ + if (HASH_Write_Block_Data(hhash) == HASH_DIGEST_CALCULATION_STARTED) + { + /* Call Input data transfer complete call back + (called at the end of each step for HMAC) */ +#if (USE_HAL_HASH_REGISTER_CALLBACKS == 1) + hhash->InCpltCallback(hhash); +#else + HAL_HASH_InCpltCallback(hhash); +#endif /* USE_HAL_HASH_REGISTER_CALLBACKS */ + + if (hhash->Phase == HAL_HASH_PHASE_HMAC_STEP_1) + { + /* Wait until Peripheral is not busy anymore */ + if (HASH_WaitOnFlagUntilTimeout(hhash, HASH_FLAG_BUSY, SET, HASH_TIMEOUTVALUE) != HAL_OK) + { + /* Disable Interrupts */ + __HAL_HASH_DISABLE_IT(HASH_IT_DINI | HASH_IT_DCI); + return HAL_TIMEOUT; + } + /* Initialization start for HMAC STEP 2 */ + hhash->Phase = HAL_HASH_PHASE_HMAC_STEP_2; /* Move phase from Step 1 to Step 2 */ + __HAL_HASH_SET_NBVALIDBITS(hhash->HashBuffSize); /* Set NBLW for the input message */ + hhash->HashInCount = hhash->HashBuffSize; /* Set the input data size (in bytes) */ + hhash->pHashInBuffPtr = hhash->pHashMsgBuffPtr; /* Set the input data address */ + hhash->HashITCounter = 1; /* Set ITCounter to 1 to indicate the start + of a new phase */ + __HAL_HASH_ENABLE_IT(HASH_IT_DINI); /* Enable IT (was disabled in HASH_Write_Block_Data) */ + } + else if (hhash->Phase == HAL_HASH_PHASE_HMAC_STEP_2) + { + /* Wait until Peripheral is not busy anymore */ + if (HASH_WaitOnFlagUntilTimeout(hhash, HASH_FLAG_BUSY, SET, HASH_TIMEOUTVALUE) != HAL_OK) + { + /* Disable Interrupts */ + __HAL_HASH_DISABLE_IT(HASH_IT_DINI | HASH_IT_DCI); + return HAL_TIMEOUT; + } + /* Initialization start for HMAC STEP 3 */ + hhash->Phase = HAL_HASH_PHASE_HMAC_STEP_3; /* Move phase from Step 2 to Step 3 */ + __HAL_HASH_SET_NBVALIDBITS(hhash->Init.KeySize); /* Set NBLW for the key */ + hhash->HashInCount = hhash->Init.KeySize; /* Set the key size (in bytes) */ + hhash->pHashInBuffPtr = hhash->Init.pKey; /* Set the key address */ + hhash->HashITCounter = 1; /* Set ITCounter to 1 to indicate the start + of a new phase */ + __HAL_HASH_ENABLE_IT(HASH_IT_DINI); /* Enable IT (was disabled in HASH_Write_Block_Data) */ + } + else + { + /* Nothing to do */ + } + } /* if (HASH_Write_Block_Data(hhash) == HASH_DIGEST_CALCULATION_STARTED) */ + } /* if (__HAL_HASH_GET_FLAG(HASH_FLAG_DINIS))*/ + + /* Return function status */ + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + + +/** + * @brief Write a block of data in HASH Peripheral in interruption mode. + * @param hhash HASH handle. + * @note HASH_Write_Block_Data() is called under interruption by HASH_IT(). + * @retval HAL status + */ +static uint32_t HASH_Write_Block_Data(HASH_HandleTypeDef *hhash) +{ + uint32_t inputaddr; + uint32_t buffercounter; + uint32_t inputcounter; + uint32_t ret = HASH_DIGEST_CALCULATION_NOT_STARTED; + + /* If there are more than 64 bytes remaining to be entered */ + if (hhash->HashInCount > 64U) + { + inputaddr = (uint32_t)hhash->pHashInBuffPtr; + /* Write the Input block in the Data IN register + (16 32-bit words, or 64 bytes are entered) */ + for (buffercounter = 0U; buffercounter < 64U; buffercounter += 4U) + { + HASH->DIN = *(uint32_t *)inputaddr; + inputaddr += 4U; + } + /* If this is the start of input data entering, an additional word + must be entered to start up the HASH processing */ + if (hhash->HashITCounter == 2U) + { + HASH->DIN = *(uint32_t *)inputaddr; + if (hhash->HashInCount >= 68U) + { + /* There are still data waiting to be entered in the Peripheral. + Decrement buffer counter and set pointer to the proper + memory location for the next data entering round. */ + hhash->HashInCount -= 68U; + hhash->pHashInBuffPtr += 68U; + } + else + { + /* All the input buffer has been fed to the HW. */ + hhash->HashInCount = 0U; + } + } + else + { + /* 64 bytes have been entered and there are still some remaining: + Decrement buffer counter and set pointer to the proper + memory location for the next data entering round.*/ + hhash->HashInCount -= 64U; + hhash->pHashInBuffPtr += 64U; + } + } + else + { + /* 64 or less bytes remain to be entered. This is the last + data entering round. */ + + /* Get the buffer address */ + inputaddr = (uint32_t)hhash->pHashInBuffPtr; + /* Get the buffer counter */ + inputcounter = hhash->HashInCount; + /* Disable Interrupts */ + __HAL_HASH_DISABLE_IT(HASH_IT_DINI); + + /* Write the Input block in the Data IN register */ + for (buffercounter = 0U; buffercounter < ((inputcounter + 3U) / 4U); buffercounter++) + { + HASH->DIN = *(uint32_t *)inputaddr; + inputaddr += 4U; + } + + if (hhash->Accumulation == 1U) + { + /* Field accumulation is set, API only feeds data to the Peripheral and under interruption. + The digest computation will be started when the last buffer data are entered. */ + + /* Reset multi buffers accumulation flag */ + hhash->Accumulation = 0U; + /* Change the HASH state */ + hhash->State = HAL_HASH_STATE_READY; + /* Call Input data transfer complete call back */ +#if (USE_HAL_HASH_REGISTER_CALLBACKS == 1) + hhash->InCpltCallback(hhash); +#else + HAL_HASH_InCpltCallback(hhash); +#endif /* USE_HAL_HASH_REGISTER_CALLBACKS */ + } + else + { + /* Start the Digest calculation */ + __HAL_HASH_START_DIGEST(); + /* Return indication that digest calculation has started: + this return value triggers the call to Input data transfer + complete call back as well as the proper transition from + one step to another in HMAC mode. */ + ret = HASH_DIGEST_CALCULATION_STARTED; + } + /* Reset buffer counter */ + hhash->HashInCount = 0; + } + + /* Return whether or digest calculation has started */ + return ret; +} + +/** + * @brief HMAC processing in polling mode. + * @param hhash HASH handle. + * @param Timeout Timeout value. + * @retval HAL status + */ +static HAL_StatusTypeDef HMAC_Processing(HASH_HandleTypeDef *hhash, uint32_t Timeout) +{ + /* Ensure first that Phase is correct */ + if ((hhash->Phase != HAL_HASH_PHASE_HMAC_STEP_1) && (hhash->Phase != HAL_HASH_PHASE_HMAC_STEP_2) + && (hhash->Phase != HAL_HASH_PHASE_HMAC_STEP_3)) + { + /* Change the HASH state */ + hhash->State = HAL_HASH_STATE_READY; + + /* Process Unlock */ + __HAL_UNLOCK(hhash); + + /* Return function status */ + return HAL_ERROR; + } + + /* HMAC Step 1 processing */ + if (hhash->Phase == HAL_HASH_PHASE_HMAC_STEP_1) + { + /************************** 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 */ + hhash->Status = HASH_WriteData(hhash, hhash->pHashKeyBuffPtr, hhash->HashKeyCount); + if (hhash->Status != HAL_OK) + { + return hhash->Status; + } + + /* Check whether or not key entering process has been suspended */ + if (hhash->State == HAL_HASH_STATE_SUSPENDED) + { + /* Process Unlocked */ + __HAL_UNLOCK(hhash); + + /* Stop right there and return function status */ + return HAL_OK; + } + + /* No processing suspension at this point: set DCAL bit. */ + __HAL_HASH_START_DIGEST(); + + /* Wait for BUSY flag to be cleared */ + if (HASH_WaitOnFlagUntilTimeout(hhash, HASH_FLAG_BUSY, SET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Move from Step 1 to Step 2 */ + hhash->Phase = HAL_HASH_PHASE_HMAC_STEP_2; + + } + + /* HMAC Step 2 processing. + After phase check, HMAC_Processing() may + - directly start up from this point in resumption case + if the same Step 2 processing was suspended previously + - or fall through from the Step 1 processing carried out hereabove */ + if (hhash->Phase == HAL_HASH_PHASE_HMAC_STEP_2) + { + /************************** STEP 2 ******************************************/ + /* Configure the Number of valid bits in last word of the message */ + __HAL_HASH_SET_NBVALIDBITS(hhash->HashBuffSize); + + /* Write input buffer in Data register */ + hhash->Status = HASH_WriteData(hhash, hhash->pHashInBuffPtr, hhash->HashInCount); + if (hhash->Status != HAL_OK) + { + return hhash->Status; + } + + /* Check whether or not data entering process has been suspended */ + if (hhash->State == HAL_HASH_STATE_SUSPENDED) + { + /* Process Unlocked */ + __HAL_UNLOCK(hhash); + + /* Stop right there and return function status */ + return HAL_OK; + } + + /* No processing suspension at this point: set DCAL bit. */ + __HAL_HASH_START_DIGEST(); + + /* Wait for BUSY flag to be cleared */ + if (HASH_WaitOnFlagUntilTimeout(hhash, HASH_FLAG_BUSY, SET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Move from Step 2 to Step 3 */ + hhash->Phase = HAL_HASH_PHASE_HMAC_STEP_3; + /* In case Step 1 phase was suspended then resumed, + set again Key input buffers and size before moving to + next step */ + hhash->pHashKeyBuffPtr = hhash->Init.pKey; + hhash->HashKeyCount = hhash->Init.KeySize; + } + + + /* HMAC Step 3 processing. + After phase check, HMAC_Processing() may + - directly start up from this point in resumption case + if the same Step 3 processing was suspended previously + - or fall through from the Step 2 processing carried out hereabove */ + if (hhash->Phase == HAL_HASH_PHASE_HMAC_STEP_3) + { + /************************** 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 */ + hhash->Status = HASH_WriteData(hhash, hhash->pHashKeyBuffPtr, hhash->HashKeyCount); + if (hhash->Status != HAL_OK) + { + return hhash->Status; + } + + /* Check whether or not key entering process has been suspended */ + if (hhash->State == HAL_HASH_STATE_SUSPENDED) + { + /* Process Unlocked */ + __HAL_UNLOCK(hhash); + + /* Stop right there and return function status */ + return HAL_OK; + } + + /* No processing suspension at this point: start the Digest calculation. */ + __HAL_HASH_START_DIGEST(); + + /* Wait for DCIS flag to be set */ + if (HASH_WaitOnFlagUntilTimeout(hhash, HASH_FLAG_DCIS, RESET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Read the message digest */ + HASH_GetDigest(hhash->pHashOutBuffPtr, HASH_DIGEST_LENGTH()); + + /* Reset HASH state machine */ + hhash->Phase = HAL_HASH_PHASE_READY; + } + + /* Change the HASH state */ + hhash->State = HAL_HASH_STATE_READY; + + /* Process Unlock */ + __HAL_UNLOCK(hhash); + + /* Return function status */ + return HAL_OK; +} + + +/** + * @brief Initialize the HASH peripheral, next process pInBuffer then + * read the computed digest. + * @note 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. + * @param pOutBuffer pointer to the computed digest. + * @param Timeout Timeout value. + * @param Algorithm HASH algorithm. + * @retval HAL status + */ +HAL_StatusTypeDef HASH_Start(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, uint8_t *pOutBuffer, + uint32_t Timeout, uint32_t Algorithm) +{ + uint8_t *pInBuffer_tmp; /* input data address, input parameter of HASH_WriteData() */ + uint32_t Size_tmp; /* input data size (in bytes), input parameter of HASH_WriteData() */ + HAL_HASH_StateTypeDef State_tmp = hhash->State; + + + /* Initiate HASH processing in case of start or resumption */ + if ((State_tmp == HAL_HASH_STATE_READY) || (State_tmp == HAL_HASH_STATE_SUSPENDED)) + { + /* Check input parameters */ + if ((pInBuffer == NULL) || (pOutBuffer == NULL)) + { + hhash->State = HAL_HASH_STATE_READY; + return HAL_ERROR; + } + + /* Process Locked */ + __HAL_LOCK(hhash); + + /* Check if initialization phase has not been already performed */ + if (hhash->Phase == HAL_HASH_PHASE_READY) + { + /* Change the HASH state */ + hhash->State = HAL_HASH_STATE_BUSY; + + /* Select the HASH algorithm, clear HMAC mode and long key selection bit, reset the HASH processor core */ + MODIFY_REG(HASH->CR, HASH_CR_LKEY | HASH_CR_ALGO | HASH_CR_MODE | HASH_CR_INIT, Algorithm | HASH_CR_INIT); + + /* Configure the number of valid bits in last word of the message */ + __HAL_HASH_SET_NBVALIDBITS(Size); + + /* pInBuffer_tmp and Size_tmp are initialized to be used afterwards as + input parameters of HASH_WriteData() */ + pInBuffer_tmp = pInBuffer; /* pInBuffer_tmp is set to the input data address */ + Size_tmp = Size; /* Size_tmp contains the input data size in bytes */ + + /* Set the phase */ + hhash->Phase = HAL_HASH_PHASE_PROCESS; + } + else if (hhash->Phase == HAL_HASH_PHASE_PROCESS) + { + /* if the Peripheral has already been initialized, two cases are possible */ + + /* Process resumption time ... */ + if (hhash->State == HAL_HASH_STATE_SUSPENDED) + { + /* Since this is resumption, pInBuffer_tmp and Size_tmp are not set + to the API input parameters but to those saved beforehand by HASH_WriteData() + when the processing was suspended */ + pInBuffer_tmp = hhash->pHashInBuffPtr; + Size_tmp = hhash->HashInCount; + } + /* ... or multi-buffer HASH processing end */ + else + { + /* pInBuffer_tmp and Size_tmp are initialized to be used afterwards as + input parameters of HASH_WriteData() */ + pInBuffer_tmp = pInBuffer; + Size_tmp = Size; + /* Configure the number of valid bits in last word of the message */ + __HAL_HASH_SET_NBVALIDBITS(Size); + } + /* Change the HASH state */ + hhash->State = HAL_HASH_STATE_BUSY; + } + else + { + /* Phase error */ + hhash->State = HAL_HASH_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hhash); + + /* Return function status */ + return HAL_ERROR; + } + + + /* Write input buffer in Data register */ + hhash->Status = HASH_WriteData(hhash, pInBuffer_tmp, Size_tmp); + if (hhash->Status != HAL_OK) + { + return hhash->Status; + } + + /* If the process has not been suspended, carry on to digest calculation */ + if (hhash->State != HAL_HASH_STATE_SUSPENDED) + { + /* Start the Digest calculation */ + __HAL_HASH_START_DIGEST(); + + /* Wait for DCIS flag to be set */ + if (HASH_WaitOnFlagUntilTimeout(hhash, HASH_FLAG_DCIS, RESET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Read the message digest */ + HASH_GetDigest(pOutBuffer, HASH_DIGEST_LENGTH()); + + /* Change the HASH state */ + hhash->State = HAL_HASH_STATE_READY; + + /* Reset HASH state machine */ + hhash->Phase = HAL_HASH_PHASE_READY; + + } + + /* Process Unlocked */ + __HAL_UNLOCK(hhash); + + /* Return function status */ + return HAL_OK; + + } + else + { + return HAL_BUSY; + } +} + + +/** + * @brief If not already done, initialize the HASH peripheral then + * processes pInBuffer. + * @note Field hhash->Phase of HASH handle is tested to check whether or not + * the Peripheral has already been initialized. + * @note The input buffer size (in bytes) must be a multiple of 4 otherwise, the + * HASH digest computation is corrupted. + * @param hhash HASH handle. + * @param pInBuffer pointer to the input buffer (buffer to be hashed). + * @param Size length of the input buffer in bytes, must be a multiple of 4. + * @param Algorithm HASH algorithm. + * @retval HAL status + */ +HAL_StatusTypeDef HASH_Accumulate(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, uint32_t Algorithm) +{ + uint8_t *pInBuffer_tmp; /* input data address, input parameter of HASH_WriteData() */ + uint32_t Size_tmp; /* input data size (in bytes), input parameter of HASH_WriteData() */ + HAL_HASH_StateTypeDef State_tmp = hhash->State; + + /* Make sure the input buffer size (in bytes) is a multiple of 4 */ + if ((Size % 4U) != 0U) + { + return HAL_ERROR; + } + + /* Initiate HASH processing in case of start or resumption */ + if ((State_tmp == HAL_HASH_STATE_READY) || (State_tmp == HAL_HASH_STATE_SUSPENDED)) + { + /* Check input parameters */ + if ((pInBuffer == NULL) || (Size == 0U)) + { + hhash->State = HAL_HASH_STATE_READY; + return HAL_ERROR; + } + + /* Process Locked */ + __HAL_LOCK(hhash); + + /* If resuming the HASH processing */ + if (hhash->State == HAL_HASH_STATE_SUSPENDED) + { + /* Change the HASH state */ + hhash->State = HAL_HASH_STATE_BUSY; + + /* Since this is resumption, pInBuffer_tmp and Size_tmp are not set + to the API input parameters but to those saved beforehand by HASH_WriteData() + when the processing was suspended */ + pInBuffer_tmp = hhash->pHashInBuffPtr; /* pInBuffer_tmp is set to the input data address */ + Size_tmp = hhash->HashInCount; /* Size_tmp contains the input data size in bytes */ + + } + else + { + /* Change the HASH state */ + hhash->State = HAL_HASH_STATE_BUSY; + + /* pInBuffer_tmp and Size_tmp are initialized to be used afterwards as + input parameters of HASH_WriteData() */ + pInBuffer_tmp = pInBuffer; /* pInBuffer_tmp is set to the input data address */ + Size_tmp = Size; /* Size_tmp contains the input data size in bytes */ + + /* Check if initialization phase has already be performed */ + if (hhash->Phase == HAL_HASH_PHASE_READY) + { + /* Select the HASH algorithm, clear HMAC mode and long key selection bit, reset the HASH processor core */ + MODIFY_REG(HASH->CR, HASH_CR_LKEY | HASH_CR_ALGO | HASH_CR_MODE | HASH_CR_INIT, Algorithm | HASH_CR_INIT); + } + + /* Set the phase */ + hhash->Phase = HAL_HASH_PHASE_PROCESS; + + } + + /* Write input buffer in Data register */ + hhash->Status = HASH_WriteData(hhash, pInBuffer_tmp, Size_tmp); + if (hhash->Status != HAL_OK) + { + return hhash->Status; + } + + /* If the process has not been suspended, move the state to Ready */ + if (hhash->State != HAL_HASH_STATE_SUSPENDED) + { + /* Change the HASH state */ + hhash->State = HAL_HASH_STATE_READY; + } + + /* Process Unlocked */ + __HAL_UNLOCK(hhash); + + /* Return function status */ + return HAL_OK; + + } + else + { + return HAL_BUSY; + } + + +} + + +/** + * @brief If not already done, initialize the HASH peripheral then + * processes pInBuffer in interruption mode. + * @note Field hhash->Phase of HASH handle is tested to check whether or not + * the Peripheral has already been initialized. + * @note The input buffer size (in bytes) must be a multiple of 4 otherwise, the + * HASH digest computation is corrupted. + * @param hhash HASH handle. + * @param pInBuffer pointer to the input buffer (buffer to be hashed). + * @param Size length of the input buffer in bytes, must be a multiple of 4. + * @param Algorithm HASH algorithm. + * @retval HAL status + */ +HAL_StatusTypeDef HASH_Accumulate_IT(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, uint32_t Algorithm) +{ + HAL_HASH_StateTypeDef State_tmp = hhash->State; + __IO uint32_t inputaddr = (uint32_t) pInBuffer; + uint32_t SizeVar = Size; + + /* Make sure the input buffer size (in bytes) is a multiple of 4 */ + if ((Size % 4U) != 0U) + { + return HAL_ERROR; + } + + /* Initiate HASH processing in case of start or resumption */ + if ((State_tmp == HAL_HASH_STATE_READY) || (State_tmp == HAL_HASH_STATE_SUSPENDED)) + { + /* Check input parameters */ + if ((pInBuffer == NULL) || (Size == 0U)) + { + hhash->State = HAL_HASH_STATE_READY; + return HAL_ERROR; + } + + /* Process Locked */ + __HAL_LOCK(hhash); + + /* If resuming the HASH processing */ + if (hhash->State == HAL_HASH_STATE_SUSPENDED) + { + /* Change the HASH state */ + hhash->State = HAL_HASH_STATE_BUSY; + } + else + { + /* Change the HASH state */ + hhash->State = HAL_HASH_STATE_BUSY; + + /* Check if initialization phase has already be performed */ + if (hhash->Phase == HAL_HASH_PHASE_READY) + { + /* Select the HASH algorithm, clear HMAC mode and long key selection bit, reset the HASH processor core */ + MODIFY_REG(HASH->CR, HASH_CR_LKEY | HASH_CR_ALGO | HASH_CR_MODE | HASH_CR_INIT, Algorithm | HASH_CR_INIT); + hhash->HashITCounter = 1; + } + else + { + hhash->HashITCounter = 3; /* 'cruise-speed' reached during a previous buffer processing */ + } + + /* Set the phase */ + hhash->Phase = HAL_HASH_PHASE_PROCESS; + + /* If DINIS is equal to 0 (for example if an incomplete block has been previously + fed to the Peripheral), the DINIE interruption won't be triggered when DINIE is set. + Therefore, first words are manually entered until DINIS raises, or until there + is not more data to enter. */ + while ((!(__HAL_HASH_GET_FLAG(HASH_FLAG_DINIS))) && (SizeVar > 0U)) + { + + /* Write input data 4 bytes at a time */ + HASH->DIN = *(uint32_t *)inputaddr; + inputaddr += 4U; + SizeVar -= 4U; + } + + /* If DINIS is still not set or if all the data have been fed, stop here */ + if ((!(__HAL_HASH_GET_FLAG(HASH_FLAG_DINIS))) || (SizeVar == 0U)) + { + /* Change the HASH state */ + hhash->State = HAL_HASH_STATE_READY; + + /* Process Unlock */ + __HAL_UNLOCK(hhash); + + /* Return function status */ + return HAL_OK; + } + + /* otherwise, carry on in interrupt-mode */ + hhash->HashInCount = SizeVar; /* Counter used to keep track of number of data + to be fed to the Peripheral */ + hhash->pHashInBuffPtr = (uint8_t *)inputaddr; /* Points at data which will be fed to the Peripheral at + the next interruption */ + /* In case of suspension, hhash->HashInCount and hhash->pHashInBuffPtr contain + the information describing where the HASH process is stopped. + These variables are used later on to resume the HASH processing at the + correct location. */ + + } + + /* Set multi buffers accumulation flag */ + hhash->Accumulation = 1U; + + /* Process Unlock */ + __HAL_UNLOCK(hhash); + + /* Enable Data Input interrupt */ + __HAL_HASH_ENABLE_IT(HASH_IT_DINI); + + /* Return function status */ + return HAL_OK; + + } + else + { + return HAL_BUSY; + } + +} + + + +/** + * @brief Initialize the HASH peripheral, next process pInBuffer then + * read the computed digest in interruption mode. + * @note 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. + * @param pOutBuffer pointer to the computed digest. + * @param Algorithm HASH algorithm. + * @retval HAL status + */ +HAL_StatusTypeDef HASH_Start_IT(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, uint8_t *pOutBuffer, + uint32_t Algorithm) +{ + HAL_HASH_StateTypeDef State_tmp = hhash->State; + __IO uint32_t inputaddr = (uint32_t) pInBuffer; + uint32_t polling_step = 0U; + uint32_t initialization_skipped = 0U; + uint32_t SizeVar = Size; + + /* If State is ready or suspended, start or resume IT-based HASH processing */ + if ((State_tmp == HAL_HASH_STATE_READY) || (State_tmp == HAL_HASH_STATE_SUSPENDED)) + { + /* Check input parameters */ + if ((pInBuffer == NULL) || (Size == 0U) || (pOutBuffer == NULL)) + { + hhash->State = HAL_HASH_STATE_READY; + return HAL_ERROR; + } + + /* Process Locked */ + __HAL_LOCK(hhash); + + /* Change the HASH state */ + hhash->State = HAL_HASH_STATE_BUSY; + + /* Initialize IT counter */ + hhash->HashITCounter = 1; + + /* Check if initialization phase has already be performed */ + if (hhash->Phase == HAL_HASH_PHASE_READY) + { + /* Select the HASH algorithm, clear HMAC mode and long key selection bit, reset the HASH processor core */ + MODIFY_REG(HASH->CR, HASH_CR_LKEY | HASH_CR_ALGO | HASH_CR_MODE | HASH_CR_INIT, Algorithm | HASH_CR_INIT); + + /* Configure the number of valid bits in last word of the message */ + __HAL_HASH_SET_NBVALIDBITS(SizeVar); + + + hhash->HashInCount = SizeVar; /* Counter used to keep track of number of data + to be fed to the Peripheral */ + hhash->pHashInBuffPtr = pInBuffer; /* Points at data which will be fed to the Peripheral at + the next interruption */ + /* In case of suspension, hhash->HashInCount and hhash->pHashInBuffPtr contain + the information describing where the HASH process is stopped. + These variables are used later on to resume the HASH processing at the + correct location. */ + + hhash->pHashOutBuffPtr = pOutBuffer; /* Points at the computed digest */ + } + else + { + initialization_skipped = 1; /* info user later on in case of multi-buffer */ + } + + /* Set the phase */ + hhash->Phase = HAL_HASH_PHASE_PROCESS; + + /* If DINIS is equal to 0 (for example if an incomplete block has been previously + fed to the Peripheral), the DINIE interruption won't be triggered when DINIE is set. + Therefore, first words are manually entered until DINIS raises. */ + while ((!(__HAL_HASH_GET_FLAG(HASH_FLAG_DINIS))) && (SizeVar > 3U)) + { + polling_step = 1U; /* note that some words are entered before enabling the interrupt */ + + /* Write input data 4 bytes at a time */ + HASH->DIN = *(uint32_t *)inputaddr; + inputaddr += 4U; + SizeVar -= 4U; + } + + if (polling_step == 1U) + { + if (SizeVar == 0U) + { + /* If all the data have been entered at this point, it only remains to + read the digest */ + hhash->pHashOutBuffPtr = pOutBuffer; /* Points at the computed digest */ + + /* Start the Digest calculation */ + __HAL_HASH_START_DIGEST(); + /* Process Unlock */ + __HAL_UNLOCK(hhash); + + /* Enable Interrupts */ + __HAL_HASH_ENABLE_IT(HASH_IT_DCI); + + /* Return function status */ + return HAL_OK; + } + else if (__HAL_HASH_GET_FLAG(HASH_FLAG_DINIS)) + { + /* It remains data to enter and the Peripheral is ready to trigger DINIE, + carry on as usual. + Update HashInCount and pHashInBuffPtr accordingly. */ + hhash->HashInCount = SizeVar; + hhash->pHashInBuffPtr = (uint8_t *)inputaddr; + /* Update the configuration of the number of valid bits in last word of the message */ + __HAL_HASH_SET_NBVALIDBITS(SizeVar); + hhash->pHashOutBuffPtr = pOutBuffer; /* Points at the computed digest */ + if (initialization_skipped == 1U) + { + hhash->HashITCounter = 3; /* 'cruise-speed' reached during a previous buffer processing */ + } + } + else + { + /* DINIS is not set but it remains a few data to enter (not enough for a full word). + Manually enter the last bytes before enabling DCIE. */ + __HAL_HASH_SET_NBVALIDBITS(SizeVar); + HASH->DIN = *(uint32_t *)inputaddr; + + /* Start the Digest calculation */ + hhash->pHashOutBuffPtr = pOutBuffer; /* Points at the computed digest */ + __HAL_HASH_START_DIGEST(); + /* Process Unlock */ + __HAL_UNLOCK(hhash); + + /* Enable Interrupts */ + __HAL_HASH_ENABLE_IT(HASH_IT_DCI); + + /* Return function status */ + return HAL_OK; + } + } /* if (polling_step == 1) */ + + + /* Process Unlock */ + __HAL_UNLOCK(hhash); + + /* Enable Interrupts */ + __HAL_HASH_ENABLE_IT(HASH_IT_DINI | HASH_IT_DCI); + + /* Return function status */ + return HAL_OK; + } + else + { + return HAL_BUSY; + } + +} + + +/** + * @brief Initialize the HASH peripheral then initiate a DMA transfer + * to feed the input buffer to the Peripheral. + * @note If MDMAT bit is set before calling this function (multi-buffer + * HASH processing case), the input buffer size (in bytes) must be + * a multiple of 4 otherwise, the HASH digest computation is corrupted. + * For the processing of the last buffer of the thread, MDMAT bit must + * be reset and the buffer length (in bytes) doesn't have to be a + * multiple of 4. + * @param hhash HASH handle. + * @param pInBuffer pointer to the input buffer (buffer to be hashed). + * @param Size length of the input buffer in bytes. + * @param Algorithm HASH algorithm. + * @retval HAL status + */ +HAL_StatusTypeDef HASH_Start_DMA(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, uint32_t Algorithm) +{ + uint32_t inputaddr; + uint32_t inputSize; + HAL_StatusTypeDef status ; + HAL_HASH_StateTypeDef State_tmp = hhash->State; + + + /* Make sure the input buffer size (in bytes) is a multiple of 4 when MDMAT bit is set + (case of multi-buffer HASH processing) */ + assert_param(IS_HASH_DMA_MULTIBUFFER_SIZE(Size)); + + /* If State is ready or suspended, start or resume polling-based HASH processing */ + if ((State_tmp == HAL_HASH_STATE_READY) || (State_tmp == HAL_HASH_STATE_SUSPENDED)) + { + /* Check input parameters */ + if ((pInBuffer == NULL) || (Size == 0U) || + /* Check phase coherency. Phase must be + either READY (fresh start) + or PROCESS (multi-buffer HASH management) */ + ((hhash->Phase != HAL_HASH_PHASE_READY) && (!(IS_HASH_PROCESSING(hhash))))) + { + hhash->State = HAL_HASH_STATE_READY; + return HAL_ERROR; + } + + + /* Process Locked */ + __HAL_LOCK(hhash); + + /* If not a resumption case */ + if (hhash->State == HAL_HASH_STATE_READY) + { + /* Change the HASH state */ + hhash->State = HAL_HASH_STATE_BUSY; + + /* Check if initialization phase has already been performed. + If Phase is already set to HAL_HASH_PHASE_PROCESS, this means the + API is processing a new input data message in case of multi-buffer HASH + computation. */ + if (hhash->Phase == HAL_HASH_PHASE_READY) + { + /* Select the HASH algorithm, clear HMAC mode and long key selection bit, reset the HASH processor core */ + MODIFY_REG(HASH->CR, HASH_CR_LKEY | HASH_CR_ALGO | HASH_CR_MODE | HASH_CR_INIT, Algorithm | 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); + + inputaddr = (uint32_t)pInBuffer; /* DMA transfer start address */ + inputSize = Size; /* DMA transfer size (in bytes) */ + + /* In case of suspension request, save the starting parameters */ + hhash->pHashInBuffPtr = pInBuffer; /* DMA transfer start address */ + hhash->HashInCount = Size; /* DMA transfer size (in bytes) */ + + } + /* If resumption case */ + else + { + /* Change the HASH state */ + hhash->State = HAL_HASH_STATE_BUSY; + + /* Resumption case, inputaddr and inputSize are not set to the API input parameters + but to those saved beforehand by HAL_HASH_DMAFeed_ProcessSuspend() when the + processing was suspended */ + inputaddr = (uint32_t)hhash->pHashInBuffPtr; /* DMA transfer start address */ + inputSize = hhash->HashInCount; /* DMA transfer size (in bytes) */ + + } + + /* Set the HASH DMA transfer complete callback */ + hhash->hdmain->XferCpltCallback = HASH_DMAXferCplt; + /* Set the DMA error callback */ + hhash->hdmain->XferErrorCallback = HASH_DMAError; + + /* Store number of words already pushed to manage proper DMA processing suspension */ + hhash->NbWordsAlreadyPushed = HASH_NBW_PUSHED(); + + /* Enable the DMA In DMA stream */ + status = HAL_DMA_Start_IT(hhash->hdmain, inputaddr, (uint32_t)&HASH->DIN, \ + (((inputSize % 4U) != 0U) ? ((inputSize + (4U - (inputSize % 4U))) / 4U) : \ + (inputSize / 4U))); + + /* Enable DMA requests */ + SET_BIT(HASH->CR, HASH_CR_DMAE); + + /* Process Unlock */ + __HAL_UNLOCK(hhash); + + /* Return function status */ + if (status != HAL_OK) + { + /* Update HASH state machine to error */ + hhash->State = HAL_HASH_STATE_ERROR; + } + + return status; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Return the computed digest. + * @note The API waits for DCIS to be set then reads the computed digest. + * @param hhash HASH handle. + * @param pOutBuffer pointer to the computed digest. + * @param Timeout Timeout value. + * @retval HAL status + */ +HAL_StatusTypeDef HASH_Finish(HASH_HandleTypeDef *hhash, uint8_t *pOutBuffer, uint32_t Timeout) +{ + + if (hhash->State == HAL_HASH_STATE_READY) + { + /* Check parameter */ + if (pOutBuffer == NULL) + { + return HAL_ERROR; + } + + /* Process Locked */ + __HAL_LOCK(hhash); + + /* Change the HASH state to busy */ + hhash->State = HAL_HASH_STATE_BUSY; + + /* Wait for DCIS flag to be set */ + if (HASH_WaitOnFlagUntilTimeout(hhash, HASH_FLAG_DCIS, RESET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Read the message digest */ + HASH_GetDigest(pOutBuffer, HASH_DIGEST_LENGTH()); + + /* Change the HASH state to ready */ + hhash->State = HAL_HASH_STATE_READY; + + /* Reset HASH state machine */ + hhash->Phase = HAL_HASH_PHASE_READY; + + /* Process UnLock */ + __HAL_UNLOCK(hhash); + + /* Return function status */ + return HAL_OK; + + } + else + { + return HAL_BUSY; + } + +} + + +/** + * @brief Initialize the HASH peripheral in HMAC mode, next process pInBuffer then + * read the computed digest. + * @note Digest is available in pOutBuffer. + * @note Same key is used for the inner and the outer hash functions; pointer to key and + * key size are respectively stored in hhash->Init.pKey and hhash->Init.KeySize. + * @param hhash HASH handle. + * @param pInBuffer pointer to the input buffer (buffer to be hashed). + * @param Size length of the input buffer in bytes. + * @param pOutBuffer pointer to the computed digest. + * @param Timeout Timeout value. + * @param Algorithm HASH algorithm. + * @retval HAL status + */ +HAL_StatusTypeDef HMAC_Start(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, uint8_t *pOutBuffer, + uint32_t Timeout, uint32_t Algorithm) +{ + HAL_HASH_StateTypeDef State_tmp = hhash->State; + + /* If State is ready or suspended, start or resume polling-based HASH processing */ + if ((State_tmp == HAL_HASH_STATE_READY) || (State_tmp == HAL_HASH_STATE_SUSPENDED)) + { + /* Check input parameters */ + if ((pInBuffer == NULL) || (Size == 0U) || (hhash->Init.pKey == NULL) || (hhash->Init.KeySize == 0U) + || (pOutBuffer == NULL)) + { + hhash->State = HAL_HASH_STATE_READY; + return HAL_ERROR; + } + + /* Process Locked */ + __HAL_LOCK(hhash); + + /* Change the HASH state */ + hhash->State = HAL_HASH_STATE_BUSY; + + /* Check if initialization phase has already be performed */ + if (hhash->Phase == HAL_HASH_PHASE_READY) + { + /* Check if key size is larger than 64 bytes, accordingly set LKEY and the other setting bits */ + if (hhash->Init.KeySize > 64U) + { + MODIFY_REG(HASH->CR, HASH_CR_LKEY | HASH_CR_ALGO | HASH_CR_MODE | HASH_CR_INIT, + Algorithm | HASH_ALGOMODE_HMAC | HASH_HMAC_KEYTYPE_LONGKEY | HASH_CR_INIT); + } + else + { + MODIFY_REG(HASH->CR, HASH_CR_LKEY | HASH_CR_ALGO | HASH_CR_MODE | HASH_CR_INIT, + Algorithm | HASH_ALGOMODE_HMAC | HASH_CR_INIT); + } + /* Set the phase to Step 1 */ + hhash->Phase = HAL_HASH_PHASE_HMAC_STEP_1; + /* Resort to hhash internal fields to feed the Peripheral. + Parameters will be updated in case of suspension to contain the proper + information at resumption time. */ + hhash->pHashOutBuffPtr = pOutBuffer; /* Output digest address */ + hhash->pHashInBuffPtr = pInBuffer; /* Input data address, HMAC_Processing input + parameter for Step 2 */ + hhash->HashInCount = Size; /* Input data size, HMAC_Processing input + parameter for Step 2 */ + hhash->HashBuffSize = Size; /* Store the input buffer size for the whole HMAC process*/ + hhash->pHashKeyBuffPtr = hhash->Init.pKey; /* Key address, HMAC_Processing input parameter for Step + 1 and Step 3 */ + hhash->HashKeyCount = hhash->Init.KeySize; /* Key size, HMAC_Processing input parameter for Step 1 + and Step 3 */ + } + + /* Carry out HMAC processing */ + return HMAC_Processing(hhash, Timeout); + + } + else + { + return HAL_BUSY; + } +} + + + +/** + * @brief Initialize the HASH peripheral in HMAC mode, next process pInBuffer then + * read the computed digest in interruption mode. + * @note Digest is available in pOutBuffer. + * @note Same key is used for the inner and the outer hash functions; pointer to key and + * key size are respectively stored in hhash->Init.pKey and hhash->Init.KeySize. + * @param hhash HASH handle. + * @param pInBuffer pointer to the input buffer (buffer to be hashed). + * @param Size length of the input buffer in bytes. + * @param pOutBuffer pointer to the computed digest. + * @param Algorithm HASH algorithm. + * @retval HAL status + */ +HAL_StatusTypeDef HMAC_Start_IT(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, uint8_t *pOutBuffer, + uint32_t Algorithm) +{ + HAL_HASH_StateTypeDef State_tmp = hhash->State; + + /* If State is ready or suspended, start or resume IT-based HASH processing */ + if ((State_tmp == HAL_HASH_STATE_READY) || (State_tmp == HAL_HASH_STATE_SUSPENDED)) + { + /* Check input parameters */ + if ((pInBuffer == NULL) || (Size == 0U) || (hhash->Init.pKey == NULL) || (hhash->Init.KeySize == 0U) + || (pOutBuffer == NULL)) + { + hhash->State = HAL_HASH_STATE_READY; + return HAL_ERROR; + } + + /* Process Locked */ + __HAL_LOCK(hhash); + + /* Change the HASH state */ + hhash->State = HAL_HASH_STATE_BUSY; + + /* Initialize IT counter */ + hhash->HashITCounter = 1; + + /* Check if initialization phase has already be performed */ + if (hhash->Phase == HAL_HASH_PHASE_READY) + { + /* Check if key size is larger than 64 bytes, accordingly set LKEY and the other setting bits */ + if (hhash->Init.KeySize > 64U) + { + MODIFY_REG(HASH->CR, HASH_CR_LKEY | HASH_CR_ALGO | HASH_CR_MODE | HASH_CR_INIT, + Algorithm | HASH_ALGOMODE_HMAC | HASH_HMAC_KEYTYPE_LONGKEY | HASH_CR_INIT); + } + else + { + MODIFY_REG(HASH->CR, HASH_CR_LKEY | HASH_CR_ALGO | HASH_CR_MODE | HASH_CR_INIT, + Algorithm | HASH_ALGOMODE_HMAC | HASH_CR_INIT); + } + + /* Resort to hhash internal fields hhash->pHashInBuffPtr and hhash->HashInCount + to feed the Peripheral whatever the HMAC step. + Lines below are set to start HMAC Step 1 processing where key is entered first. */ + hhash->HashInCount = hhash->Init.KeySize; /* Key size */ + hhash->pHashInBuffPtr = hhash->Init.pKey ; /* Key address */ + + /* Store input and output parameters in handle fields to manage steps transition + or possible HMAC suspension/resumption */ + hhash->pHashKeyBuffPtr = hhash->Init.pKey; /* Key address */ + hhash->pHashMsgBuffPtr = pInBuffer; /* Input message address */ + hhash->HashBuffSize = Size; /* Input message size (in bytes) */ + hhash->pHashOutBuffPtr = pOutBuffer; /* Output digest address */ + + /* Configure the number of valid bits in last word of the key */ + __HAL_HASH_SET_NBVALIDBITS(hhash->Init.KeySize); + + /* Set the phase to Step 1 */ + hhash->Phase = HAL_HASH_PHASE_HMAC_STEP_1; + } + else if ((hhash->Phase == HAL_HASH_PHASE_HMAC_STEP_1) || (hhash->Phase == HAL_HASH_PHASE_HMAC_STEP_3)) + { + /* Restart IT-based HASH processing after Step 1 or Step 3 suspension */ + + } + else if (hhash->Phase == HAL_HASH_PHASE_HMAC_STEP_2) + { + /* Restart IT-based HASH processing after Step 2 suspension */ + + } + else + { + /* Error report as phase incorrect */ + /* Process Unlock */ + __HAL_UNLOCK(hhash); + hhash->State = HAL_HASH_STATE_READY; + return HAL_ERROR; + } + + /* Process Unlock */ + __HAL_UNLOCK(hhash); + + /* Enable Interrupts */ + __HAL_HASH_ENABLE_IT(HASH_IT_DINI | HASH_IT_DCI); + + /* Return function status */ + return HAL_OK; + } + else + { + return HAL_BUSY; + } + +} + + + +/** + * @brief Initialize the HASH peripheral in HMAC mode then initiate the required + * DMA transfers to feed the key and the input buffer to the Peripheral. + * @note Same key is used for the inner and the outer hash functions; pointer to key and + * key size are respectively stored in hhash->Init.pKey and hhash->Init.KeySize. + * @note In case of multi-buffer HMAC processing, the input buffer size (in bytes) must + * be a multiple of 4 otherwise, the HASH digest computation is corrupted. + * Only the length of the last buffer of the thread doesn't have to be a + * multiple of 4. + * @param hhash HASH handle. + * @param pInBuffer pointer to the input buffer (buffer to be hashed). + * @param Size length of the input buffer in bytes. + * @param Algorithm HASH algorithm. + * @retval HAL status + */ +HAL_StatusTypeDef HMAC_Start_DMA(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, uint32_t Algorithm) +{ + uint32_t inputaddr; + uint32_t inputSize; + HAL_StatusTypeDef status ; + HAL_HASH_StateTypeDef State_tmp = hhash->State; + /* Make sure the input buffer size (in bytes) is a multiple of 4 when digest calculation + is disabled (multi-buffer HMAC processing, MDMAT bit to be set) */ + assert_param(IS_HMAC_DMA_MULTIBUFFER_SIZE(hhash, Size)); + /* If State is ready or suspended, start or resume DMA-based HASH processing */ + if ((State_tmp == HAL_HASH_STATE_READY) || (State_tmp == HAL_HASH_STATE_SUSPENDED)) + { + /* Check input parameters */ + if ((pInBuffer == NULL) || (Size == 0U) || (hhash->Init.pKey == NULL) || (hhash->Init.KeySize == 0U) || + /* Check phase coherency. Phase must be + either READY (fresh start) + or one of HMAC PROCESS steps (multi-buffer HASH management) */ + ((hhash->Phase != HAL_HASH_PHASE_READY) && (!(IS_HMAC_PROCESSING(hhash))))) + { + hhash->State = HAL_HASH_STATE_READY; + return HAL_ERROR; + } + + + /* Process Locked */ + __HAL_LOCK(hhash); + + /* If not a case of resumption after suspension */ + if (hhash->State == HAL_HASH_STATE_READY) + { + /* Check whether or not initialization phase has already be performed */ + if (hhash->Phase == HAL_HASH_PHASE_READY) + { + /* Change the HASH state */ + hhash->State = HAL_HASH_STATE_BUSY; + /* Check if key size is larger than 64 bytes, accordingly set LKEY and the other setting bits. + At the same time, ensure MDMAT bit is cleared. */ + if (hhash->Init.KeySize > 64U) + { + MODIFY_REG(HASH->CR, HASH_CR_MDMAT | HASH_CR_LKEY | HASH_CR_ALGO | HASH_CR_MODE | HASH_CR_INIT, + Algorithm | HASH_ALGOMODE_HMAC | HASH_HMAC_KEYTYPE_LONGKEY | HASH_CR_INIT); + } + else + { + MODIFY_REG(HASH->CR, HASH_CR_MDMAT | HASH_CR_LKEY | HASH_CR_ALGO | HASH_CR_MODE | HASH_CR_INIT, + Algorithm | HASH_ALGOMODE_HMAC | HASH_CR_INIT); + } + /* Store input aparameters in handle fields to manage steps transition + or possible HMAC suspension/resumption */ + hhash->HashInCount = hhash->Init.KeySize; /* Initial size for first DMA transfer (key size) */ + hhash->pHashKeyBuffPtr = hhash->Init.pKey; /* Key address */ + hhash->pHashInBuffPtr = hhash->Init.pKey ; /* First address passed to DMA (key address at Step 1) */ + hhash->pHashMsgBuffPtr = pInBuffer; /* Input data address */ + hhash->HashBuffSize = Size; /* input data size (in bytes) */ + + /* Set DMA input parameters */ + inputaddr = (uint32_t)(hhash->Init.pKey); /* Address passed to DMA (start by entering Key message) */ + inputSize = hhash->Init.KeySize; /* Size for first DMA transfer (in bytes) */ + + /* Configure the number of valid bits in last word of the key */ + __HAL_HASH_SET_NBVALIDBITS(hhash->Init.KeySize); + + /* Set the phase to Step 1 */ + hhash->Phase = HAL_HASH_PHASE_HMAC_STEP_1; + + } + else if (hhash->Phase == HAL_HASH_PHASE_HMAC_STEP_2) + { + /* Process a new input data message in case of multi-buffer HMAC processing + (this is not a resumption case) */ + + /* Change the HASH state */ + hhash->State = HAL_HASH_STATE_BUSY; + + /* Save input parameters to be able to manage possible suspension/resumption */ + hhash->HashInCount = Size; /* Input message address */ + hhash->pHashInBuffPtr = pInBuffer; /* Input message size in bytes */ + + /* Set DMA input parameters */ + inputaddr = (uint32_t)pInBuffer; /* Input message address */ + inputSize = Size; /* Input message size in bytes */ + + if (hhash->DigestCalculationDisable == RESET) + { + /* This means this is the last buffer of the multi-buffer sequence: DCAL needs to be set. */ + __HAL_HASH_RESET_MDMAT(); + __HAL_HASH_SET_NBVALIDBITS(inputSize); + } + } + else + { + /* Phase not aligned with handle READY state */ + __HAL_UNLOCK(hhash); + /* Return function status */ + return HAL_ERROR; + } + } + else + { + /* Resumption case (phase may be Step 1, 2 or 3) */ + + /* Change the HASH state */ + hhash->State = HAL_HASH_STATE_BUSY; + + /* Set DMA input parameters at resumption location; + inputaddr and inputSize are not set to the API input parameters + but to those saved beforehand by HAL_HASH_DMAFeed_ProcessSuspend() when the + processing was suspended. */ + inputaddr = (uint32_t)(hhash->pHashInBuffPtr); /* Input message address */ + inputSize = hhash->HashInCount; /* Input message size in bytes */ + } + + + /* Set the HASH DMA transfer complete callback */ + hhash->hdmain->XferCpltCallback = HASH_DMAXferCplt; + /* Set the DMA error callback */ + hhash->hdmain->XferErrorCallback = HASH_DMAError; + + /* Store number of words already pushed to manage proper DMA processing suspension */ + hhash->NbWordsAlreadyPushed = HASH_NBW_PUSHED(); + + /* Enable the DMA In DMA stream */ + status = HAL_DMA_Start_IT(hhash->hdmain, inputaddr, (uint32_t)&HASH->DIN, \ + (((inputSize % 4U) != 0U) ? ((inputSize + (4U - (inputSize % 4U))) / 4U) \ + : (inputSize / 4U))); + + /* Enable DMA requests */ + SET_BIT(HASH->CR, HASH_CR_DMAE); + + /* Process Unlocked */ + __HAL_UNLOCK(hhash); + + /* Return function status */ + if (status != HAL_OK) + { + /* Update HASH state machine to error */ + hhash->State = HAL_HASH_STATE_ERROR; + } + + /* Return function status */ + return status; + } + else + { + return HAL_BUSY; + } +} +/** + * @} + */ + +#endif /* HAL_HASH_MODULE_ENABLED */ + +/** + * @} + */ +#endif /* HASH*/ +/** + * @} + */ + -- cgit v1.2.3