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Diff: targets/cmsis/TARGET_STM/TARGET_DISCO_F429ZI/stm32f4xx_hal_cryp_ex.c
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--- a/targets/cmsis/TARGET_STM/TARGET_DISCO_F429ZI/stm32f4xx_hal_cryp_ex.c Mon Nov 03 11:00:07 2014 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,3020 +0,0 @@ -/** - ****************************************************************************** - * @file stm32f4xx_hal_cryp_ex.c - * @author MCD Application Team - * @version V1.1.0 - * @date 19-June-2014 - * @brief Extended CRYP HAL module driver - * This file provides firmware functions to manage the following - * functionalities of CRYP extension peripheral: - * + Extended AES processing functions - * - @verbatim - ============================================================================== - ##### How to use this driver ##### - ============================================================================== - [..] - The CRYP Extension HAL driver can be used as follows: - (#)Initialize the CRYP low level resources by implementing the HAL_CRYP_MspInit(): - (##) Enable the CRYP interface clock using __CRYP_CLK_ENABLE() - (##) In case of using interrupts (e.g. HAL_CRYPEx_AESGCM_Encrypt_IT()) - (+++) Configure the CRYP interrupt priority using HAL_NVIC_SetPriority() - (+++) Enable the CRYP IRQ handler using HAL_NVIC_EnableIRQ() - (+) In CRYP IRQ handler, call HAL_CRYP_IRQHandler() - (##) In case of using DMA to control data transfer (e.g. HAL_AES_ECB_Encrypt_DMA()) - (+++) Enable the DMAx interface clock using __DMAx_CLK_ENABLE() - (+++) Configure and enable two DMA streams one for managing data transfer from - memory to peripheral (input stream) and another stream for managing data - transfer from peripheral to memory (output stream) - (+++) Associate the initilalized DMA handle to the CRYP DMA handle - using __HAL_LINKDMA() - (+++) Configure the priority and enable the NVIC for the transfer complete - interrupt on the two DMA Streams. The output stream should have higher - priority than the input stream HAL_NVIC_SetPriority() and HAL_NVIC_EnableIRQ() - (#)Initialize the CRYP HAL using HAL_CRYP_Init(). This function configures mainly: - (##) The data type: 1-bit, 8-bit, 16-bit and 32-bit - (##) The key size: 128, 192 and 256. This parameter is relevant only for AES - (##) The encryption/decryption key. Its size depends on the algorithm - used for encryption/decryption - (##) The initialization vector (counter). It is not used ECB mode. - (#)Three processing (encryption/decryption) functions are available: - (##) Polling mode: encryption and decryption APIs are blocking functions - i.e. they process the data and wait till the processing is finished - e.g. HAL_CRYPEx_AESGCM_Encrypt() - (##) Interrupt mode: encryption and decryption APIs are not blocking functions - i.e. they process the data under interrupt - e.g. HAL_CRYPEx_AESGCM_Encrypt_IT() - (##) DMA mode: encryption and decryption APIs are not blocking functions - i.e. the data transfer is ensured by DMA - e.g. HAL_CRYPEx_AESGCM_Encrypt_DMA() - (#)When the processing function is called at first time after HAL_CRYP_Init() - the CRYP peripheral is initialized and processes the buffer in input. - At second call, the processing function performs an append of the already - processed buffer. - When a new data block is to be processed, call HAL_CRYP_Init() then the - processing function. - (#)In AES-GCM and AES-CCM modes are an authenticated encryption algorithms - which provide authentication messages. - HAL_AES_GCM_Finish() and HAL_AES_CCM_Finish() are used to provide those - authentication messages. - Call those functions after the processing ones (polling, interrupt or DMA). - e.g. in AES-CCM mode call HAL_CRYPEx_AESCCM_Encrypt() to encrypt the plain data - then call HAL_CRYPEx_AESCCM_Finish() to get the authentication message - (#)Call HAL_CRYP_DeInit() to deinitialize the CRYP peripheral. - - @endverbatim - ****************************************************************************** - * @attention - * - * <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2> - * - * Redistribution and use in source and binary forms, with or without modification, - * are permitted provided that the following conditions are met: - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * 3. Neither the name of STMicroelectronics nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER - * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, - * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - ****************************************************************************** - */ - -/* Includes ------------------------------------------------------------------*/ -#include "stm32f4xx_hal.h" - -/** @addtogroup STM32F4xx_HAL_Driver - * @{ - */ - -/** @defgroup CRYPEx - * @brief CRYP Extension HAL module driver. - * @{ - */ - -#ifdef HAL_CRYP_MODULE_ENABLED - -#if defined(STM32F437xx) || defined(STM32F439xx) - -/* Private typedef -----------------------------------------------------------*/ -/* Private define ------------------------------------------------------------*/ -#define CRYPEx_TIMEOUT_VALUE 1 -/* Private macro -------------------------------------------------------------*/ -/* Private variables ---------------------------------------------------------*/ -/* Private function prototypes -----------------------------------------------*/ -static void CRYPEx_GCMCCM_SetInitVector(CRYP_HandleTypeDef *hcryp, uint8_t *InitVector, uint32_t IVSize); -static void CRYPEx_GCMCCM_SetKey(CRYP_HandleTypeDef *hcryp, uint8_t *Key, uint32_t KeySize); -static HAL_StatusTypeDef CRYPEx_GCMCCM_ProcessData(CRYP_HandleTypeDef *hcryp, uint8_t *Input, uint16_t Ilength, uint8_t *Output, uint32_t Timeout); -static HAL_StatusTypeDef CRYPEx_GCMCCM_SetHeaderPhase(CRYP_HandleTypeDef *hcryp, uint8_t* Input, uint16_t Ilength, uint32_t Timeout); -static void CRYPEx_GCMCCM_DMAInCplt(DMA_HandleTypeDef *hdma); -static void CRYPEx_GCMCCM_DMAOutCplt(DMA_HandleTypeDef *hdma); -static void CRYPEx_GCMCCM_DMAError(DMA_HandleTypeDef *hdma); -static void CRYPEx_GCMCCM_SetDMAConfig(CRYP_HandleTypeDef *hcryp, uint32_t inputaddr, uint16_t Size, uint32_t outputaddr); - -/* Private functions ---------------------------------------------------------*/ - -/** @defgroup CRYPEx_Private_Functions - * @{ - */ - -/** @defgroup CRYPEx_Group1 Extended AES processing functions - * @brief Extended processing functions. - * -@verbatim - ============================================================================== - ##### Extended AES processing functions ##### - ============================================================================== - [..] This section provides functions allowing to: - (+) Encrypt plaintext using AES-128/192/256 using GCM and CCM chaining modes - (+) Decrypt cyphertext using AES-128/192/256 using GCM and CCM chaining modes - (+) Finish the processing. This function is available only for GCM and CCM - [..] Three processing methods are available: - (+) Polling mode - (+) Interrupt mode - (+) DMA mode - -@endverbatim - * @{ - */ - - -/** - * @brief Initializes the CRYP peripheral in AES CCM encryption mode then - * encrypt pPlainData. The cypher data are available in pCypherData. - * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains - * the configuration information for CRYP module - * @param pPlainData: Pointer to the plaintext buffer - * @param Size: Length of the plaintext buffer, must be a multiple of 16 - * @param pCypherData: Pointer to the cyphertext buffer - * @param Timeout: Timeout duration - * @retval HAL status - */ -HAL_StatusTypeDef HAL_CRYPEx_AESCCM_Encrypt(CRYP_HandleTypeDef *hcryp, uint8_t *pPlainData, uint16_t Size, uint8_t *pCypherData, uint32_t Timeout) -{ - uint32_t tickstart = 0; - uint32_t headersize = hcryp->Init.HeaderSize; - uint32_t headeraddr = (uint32_t)hcryp->Init.Header; - uint32_t loopcounter = 0; - uint32_t bufferidx = 0; - uint8_t blockb0[16] = {0};/* Block B0 */ - uint8_t ctr[16] = {0}; /* Counter */ - uint32_t b0addr = (uint32_t)blockb0; - - /* Process Locked */ - __HAL_LOCK(hcryp); - - /* Change the CRYP peripheral state */ - hcryp->State = HAL_CRYP_STATE_BUSY; - - /* Check if initialization phase has already been performed */ - if(hcryp->Phase == HAL_CRYP_PHASE_READY) - { - /************************ Formatting the header block *********************/ - if(headersize != 0) - { - /* Check that the associated data (or header) length is lower than 2^16 - 2^8 = 65536 - 256 = 65280 */ - if(headersize < 65280) - { - hcryp->Init.pScratch[bufferidx++] = (uint8_t) ((headersize >> 8) & 0xFF); - hcryp->Init.pScratch[bufferidx++] = (uint8_t) ((headersize) & 0xFF); - headersize += 2; - } - else - { - /* Header is encoded as 0xff || 0xfe || [headersize]32, i.e., six octets */ - hcryp->Init.pScratch[bufferidx++] = 0xFF; - hcryp->Init.pScratch[bufferidx++] = 0xFE; - hcryp->Init.pScratch[bufferidx++] = headersize & 0xff000000; - hcryp->Init.pScratch[bufferidx++] = headersize & 0x00ff0000; - hcryp->Init.pScratch[bufferidx++] = headersize & 0x0000ff00; - hcryp->Init.pScratch[bufferidx++] = headersize & 0x000000ff; - headersize += 6; - } - /* Copy the header buffer in internal buffer "hcryp->Init.pScratch" */ - for(loopcounter = 0; loopcounter < headersize; loopcounter++) - { - hcryp->Init.pScratch[bufferidx++] = hcryp->Init.Header[loopcounter]; - } - /* Check if the header size is modulo 16 */ - if ((headersize % 16) != 0) - { - /* Padd the header buffer with 0s till the hcryp->Init.pScratch length is modulo 16 */ - for(loopcounter = headersize; loopcounter <= ((headersize/16) + 1) * 16; loopcounter++) - { - hcryp->Init.pScratch[loopcounter] = 0; - } - /* Set the header size to modulo 16 */ - headersize = ((headersize/16) + 1) * 16; - } - /* Set the pointer headeraddr to hcryp->Init.pScratch */ - headeraddr = (uint32_t)hcryp->Init.pScratch; - } - /*********************** Formatting the block B0 **************************/ - if(headersize != 0) - { - blockb0[0] = 0x40; - } - /* Flags byte */ - /* blockb0[0] |= 0u | (((( (uint8_t) hcryp->Init.TagSize - 2) / 2) & 0x07 ) << 3 ) | ( ( (uint8_t) (15 - hcryp->Init.IVSize) - 1) & 0x07) */ - blockb0[0] |= (uint8_t)((uint8_t)((uint8_t)(((uint8_t)(hcryp->Init.TagSize - (uint8_t)(2))) >> 1) & (uint8_t)0x07 ) << 3); - blockb0[0] |= (uint8_t)((uint8_t)((uint8_t)((uint8_t)(15) - hcryp->Init.IVSize) - (uint8_t)1) & (uint8_t)0x07); - - for (loopcounter = 0; loopcounter < hcryp->Init.IVSize; loopcounter++) - { - blockb0[loopcounter+1] = hcryp->Init.pInitVect[loopcounter]; - } - for ( ; loopcounter < 13; loopcounter++) - { - blockb0[loopcounter+1] = 0; - } - - blockb0[14] = (Size >> 8); - blockb0[15] = (Size & 0xFF); - - /************************* Formatting the initial counter *****************/ - /* Byte 0: - Bits 7 and 6 are reserved and shall be set to 0 - Bits 3, 4, and 5 shall also be set to 0, to ensure that all the counter blocks - are distinct from B0 - Bits 0, 1, and 2 contain the same encoding of q as in B0 - */ - ctr[0] = blockb0[0] & 0x07; - /* byte 1 to NonceSize is the IV (Nonce) */ - for(loopcounter = 1; loopcounter < hcryp->Init.IVSize + 1; loopcounter++) - { - ctr[loopcounter] = blockb0[loopcounter]; - } - /* Set the LSB to 1 */ - ctr[15] |= 0x01; - - /* Set the key */ - CRYPEx_GCMCCM_SetKey(hcryp, hcryp->Init.pKey, hcryp->Init.KeySize); - - /* Set the CRYP peripheral in AES CCM mode */ - __HAL_CRYP_SET_MODE(CRYP_CR_ALGOMODE_AES_CCM_ENCRYPT); - - /* Set the Initialization Vector */ - CRYPEx_GCMCCM_SetInitVector(hcryp, ctr, CRYP_KEYSIZE_128B); - - /* Select init phase */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_INIT); - - b0addr = (uint32_t)blockb0; - /* Write the blockb0 block in the IN FIFO */ - CRYP->DR = *(uint32_t*)(b0addr); - b0addr+=4; - CRYP->DR = *(uint32_t*)(b0addr); - b0addr+=4; - CRYP->DR = *(uint32_t*)(b0addr); - b0addr+=4; - CRYP->DR = *(uint32_t*)(b0addr); - - /* Enable the CRYP peripheral */ - __HAL_CRYP_ENABLE(); - - /* Get tick */ - tickstart = HAL_GetTick(); - - while((CRYP->CR & CRYP_CR_CRYPEN) == CRYP_CR_CRYPEN) - { - /* Check for the Timeout */ - if(Timeout != HAL_MAX_DELAY) - { - if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - } - /***************************** Header phase *******************************/ - if(headersize != 0) - { - /* Select header phase */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_HEADER); - - /* Enable the CRYP peripheral */ - __HAL_CRYP_ENABLE(); - - for(loopcounter = 0; (loopcounter < headersize); loopcounter+=16) - { - /* Get tick */ - tickstart = HAL_GetTick(); - - while(HAL_IS_BIT_CLR(CRYP->SR, CRYP_FLAG_IFEM)) - { - { - /* Check for the Timeout */ - if(Timeout != HAL_MAX_DELAY) - { - if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - } - } - /* Write the header block in the IN FIFO */ - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - } - - /* Get tick */ - tickstart = HAL_GetTick(); - - while((CRYP->SR & CRYP_FLAG_BUSY) == CRYP_FLAG_BUSY) - { - /* Check for the Timeout */ - if(Timeout != HAL_MAX_DELAY) - { - if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - } - } - /* Save formatted counter into the scratch buffer pScratch */ - for(loopcounter = 0; (loopcounter < 16); loopcounter++) - { - hcryp->Init.pScratch[loopcounter] = ctr[loopcounter]; - } - /* Reset bit 0 */ - hcryp->Init.pScratch[15] &= 0xfe; - - /* Select payload phase once the header phase is performed */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_PAYLOAD); - - /* Flush FIFO */ - __HAL_CRYP_FIFO_FLUSH(); - - /* Enable the CRYP peripheral */ - __HAL_CRYP_ENABLE(); - - /* Set the phase */ - hcryp->Phase = HAL_CRYP_PHASE_PROCESS; - } - - /* Write Plain Data and Get Cypher Data */ - if(CRYPEx_GCMCCM_ProcessData(hcryp,pPlainData, Size, pCypherData, Timeout) != HAL_OK) - { - return HAL_TIMEOUT; - } - - /* Change the CRYP peripheral state */ - hcryp->State = HAL_CRYP_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - /* Return function status */ - return HAL_OK; -} - -/** - * @brief Initializes the CRYP peripheral in AES GCM encryption mode then - * encrypt pPlainData. The cypher data are available in pCypherData. - * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains - * the configuration information for CRYP module - * @param pPlainData: Pointer to the plaintext buffer - * @param Size: Length of the plaintext buffer, must be a multiple of 16 - * @param pCypherData: Pointer to the cyphertext buffer - * @param Timeout: Timeout duration - * @retval HAL status - */ -HAL_StatusTypeDef HAL_CRYPEx_AESGCM_Encrypt(CRYP_HandleTypeDef *hcryp, uint8_t *pPlainData, uint16_t Size, uint8_t *pCypherData, uint32_t Timeout) -{ - uint32_t tickstart = 0; - - /* Process Locked */ - __HAL_LOCK(hcryp); - - /* Change the CRYP peripheral state */ - hcryp->State = HAL_CRYP_STATE_BUSY; - - /* Check if initialization phase has already been performed */ - if(hcryp->Phase == HAL_CRYP_PHASE_READY) - { - /* Set the key */ - CRYPEx_GCMCCM_SetKey(hcryp, hcryp->Init.pKey, hcryp->Init.KeySize); - - /* Set the CRYP peripheral in AES GCM mode */ - __HAL_CRYP_SET_MODE(CRYP_CR_ALGOMODE_AES_GCM_ENCRYPT); - - /* Set the Initialization Vector */ - CRYPEx_GCMCCM_SetInitVector(hcryp, hcryp->Init.pInitVect, CRYP_KEYSIZE_128B); - - /* Flush FIFO */ - __HAL_CRYP_FIFO_FLUSH(); - - /* Enable the CRYP peripheral */ - __HAL_CRYP_ENABLE(); - - /* Get tick */ - tickstart = HAL_GetTick(); - - while((CRYP->CR & CRYP_CR_CRYPEN) == CRYP_CR_CRYPEN) - { - /* Check for the Timeout */ - if(Timeout != HAL_MAX_DELAY) - { - if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - } - - /* Set the header phase */ - if(CRYPEx_GCMCCM_SetHeaderPhase(hcryp, hcryp->Init.Header, hcryp->Init.HeaderSize, Timeout) != HAL_OK) - { - return HAL_TIMEOUT; - } - - /* Disable the CRYP peripheral */ - __HAL_CRYP_DISABLE(); - - /* Select payload phase once the header phase is performed */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_PAYLOAD); - - /* Flush FIFO */ - __HAL_CRYP_FIFO_FLUSH(); - - /* Enable the CRYP peripheral */ - __HAL_CRYP_ENABLE(); - - /* Set the phase */ - hcryp->Phase = HAL_CRYP_PHASE_PROCESS; - } - - /* Write Plain Data and Get Cypher Data */ - if(CRYPEx_GCMCCM_ProcessData(hcryp, pPlainData, Size, pCypherData, Timeout) != HAL_OK) - { - return HAL_TIMEOUT; - } - - /* Change the CRYP peripheral state */ - hcryp->State = HAL_CRYP_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - /* Return function status */ - return HAL_OK; -} - -/** - * @brief Initializes the CRYP peripheral in AES GCM decryption mode then - * decrypted pCypherData. The cypher data are available in pPlainData. - * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains - * the configuration information for CRYP module - * @param pCypherData: Pointer to the cyphertext buffer - * @param Size: Length of the cyphertext buffer, must be a multiple of 16 - * @param pPlainData: Pointer to the plaintext buffer - * @param Timeout: Timeout duration - * @retval HAL status - */ -HAL_StatusTypeDef HAL_CRYPEx_AESGCM_Decrypt(CRYP_HandleTypeDef *hcryp, uint8_t *pCypherData, uint16_t Size, uint8_t *pPlainData, uint32_t Timeout) -{ - uint32_t tickstart = 0; - - /* Process Locked */ - __HAL_LOCK(hcryp); - - /* Change the CRYP peripheral state */ - hcryp->State = HAL_CRYP_STATE_BUSY; - - /* Check if initialization phase has already been performed */ - if(hcryp->Phase == HAL_CRYP_PHASE_READY) - { - /* Set the key */ - CRYPEx_GCMCCM_SetKey(hcryp, hcryp->Init.pKey, hcryp->Init.KeySize); - - /* Set the CRYP peripheral in AES GCM decryption mode */ - __HAL_CRYP_SET_MODE(CRYP_CR_ALGOMODE_AES_GCM_DECRYPT); - - /* Set the Initialization Vector */ - CRYPEx_GCMCCM_SetInitVector(hcryp, hcryp->Init.pInitVect, CRYP_KEYSIZE_128B); - - /* Flush FIFO */ - __HAL_CRYP_FIFO_FLUSH(); - - /* Enable the CRYP peripheral */ - __HAL_CRYP_ENABLE(); - - /* Get tick */ - tickstart = HAL_GetTick(); - - while((CRYP->CR & CRYP_CR_CRYPEN) == CRYP_CR_CRYPEN) - { - /* Check for the Timeout */ - if(Timeout != HAL_MAX_DELAY) - { - if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - } - - /* Set the header phase */ - if(CRYPEx_GCMCCM_SetHeaderPhase(hcryp, hcryp->Init.Header, hcryp->Init.HeaderSize, Timeout) != HAL_OK) - { - return HAL_TIMEOUT; - } - /* Disable the CRYP peripheral */ - __HAL_CRYP_DISABLE(); - - /* Select payload phase once the header phase is performed */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_PAYLOAD); - - /* Enable the CRYP peripheral */ - __HAL_CRYP_ENABLE(); - - /* Set the phase */ - hcryp->Phase = HAL_CRYP_PHASE_PROCESS; - } - - /* Write Plain Data and Get Cypher Data */ - if(CRYPEx_GCMCCM_ProcessData(hcryp, pCypherData, Size, pPlainData, Timeout) != HAL_OK) - { - return HAL_TIMEOUT; - } - - /* Change the CRYP peripheral state */ - hcryp->State = HAL_CRYP_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - /* Return function status */ - return HAL_OK; -} - -/** - * @brief Computes the authentication TAG. - * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains - * the configuration information for CRYP module - * @param Size: Total length of the plain/cyphertext buffer - * @param AuthTag: Pointer to the authentication buffer - * @param Timeout: Timeout duration - * @retval HAL status - */ -HAL_StatusTypeDef HAL_CRYPEx_AESGCM_Finish(CRYP_HandleTypeDef *hcryp, uint16_t Size, uint8_t *AuthTag, uint32_t Timeout) -{ - uint32_t tickstart = 0; - uint32_t headerlength = hcryp->Init.HeaderSize * 8; /* Header length in bits */ - uint32_t inputlength = Size * 8; /* input length in bits */ - uint32_t tagaddr = (uint32_t)AuthTag; - - /* Process Locked */ - __HAL_LOCK(hcryp); - - /* Change the CRYP peripheral state */ - hcryp->State = HAL_CRYP_STATE_BUSY; - - /* Check if initialization phase has already been performed */ - if(hcryp->Phase == HAL_CRYP_PHASE_PROCESS) - { - /* Change the CRYP phase */ - hcryp->Phase = HAL_CRYP_PHASE_FINAL; - - /* Disable CRYP to start the final phase */ - __HAL_CRYP_DISABLE(); - - /* Select final phase */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_FINAL); - - /* Enable the CRYP peripheral */ - __HAL_CRYP_ENABLE(); - - /* Write the number of bits in header (64 bits) followed by the number of bits - in the payload */ - if(hcryp->Init.DataType == CRYP_DATATYPE_1B) - { - CRYP->DR = 0; - CRYP->DR = __RBIT(headerlength); - CRYP->DR = 0; - CRYP->DR = __RBIT(inputlength); - } - else if(hcryp->Init.DataType == CRYP_DATATYPE_8B) - { - CRYP->DR = 0; - CRYP->DR = __REV(headerlength); - CRYP->DR = 0; - CRYP->DR = __REV(inputlength); - } - else if(hcryp->Init.DataType == CRYP_DATATYPE_16B) - { - CRYP->DR = 0; - CRYP->DR = __REV16(headerlength); - CRYP->DR = 0; - CRYP->DR = __REV16(inputlength); - } - else if(hcryp->Init.DataType == CRYP_DATATYPE_32B) - { - CRYP->DR = 0; - CRYP->DR = (uint32_t)(headerlength); - CRYP->DR = 0; - CRYP->DR = (uint32_t)(inputlength); - } - /* Get tick */ - tickstart = HAL_GetTick(); - - while(HAL_IS_BIT_CLR(CRYP->SR, CRYP_FLAG_OFNE)) - { - /* Check for the Timeout */ - if(Timeout != HAL_MAX_DELAY) - { - if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - } - - /* Read the Auth TAG in the IN FIFO */ - *(uint32_t*)(tagaddr) = CRYP->DOUT; - tagaddr+=4; - *(uint32_t*)(tagaddr) = CRYP->DOUT; - tagaddr+=4; - *(uint32_t*)(tagaddr) = CRYP->DOUT; - tagaddr+=4; - *(uint32_t*)(tagaddr) = CRYP->DOUT; - } - - /* Change the CRYP peripheral state */ - hcryp->State = HAL_CRYP_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - /* Return function status */ - return HAL_OK; -} - -/** - * @brief Computes the authentication TAG for AES CCM mode. - * @note This API is called after HAL_AES_CCM_Encrypt()/HAL_AES_CCM_Decrypt() - * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains - * the configuration information for CRYP module - * @param AuthTag: Pointer to the authentication buffer - * @param Timeout: Timeout duration - * @retval HAL status - */ -HAL_StatusTypeDef HAL_CRYPEx_AESCCM_Finish(CRYP_HandleTypeDef *hcryp, uint8_t *AuthTag, uint32_t Timeout) -{ - uint32_t tickstart = 0; - uint32_t tagaddr = (uint32_t)AuthTag; - uint32_t ctraddr = (uint32_t)hcryp->Init.pScratch; - uint32_t temptag[4] = {0}; /* Temporary TAG (MAC) */ - uint32_t loopcounter; - - /* Process Locked */ - __HAL_LOCK(hcryp); - - /* Change the CRYP peripheral state */ - hcryp->State = HAL_CRYP_STATE_BUSY; - - /* Check if initialization phase has already been performed */ - if(hcryp->Phase == HAL_CRYP_PHASE_PROCESS) - { - /* Change the CRYP phase */ - hcryp->Phase = HAL_CRYP_PHASE_FINAL; - - /* Disable CRYP to start the final phase */ - __HAL_CRYP_DISABLE(); - - /* Select final phase */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_FINAL); - - /* Enable the CRYP peripheral */ - __HAL_CRYP_ENABLE(); - - /* Write the counter block in the IN FIFO */ - CRYP->DR = *(uint32_t*)ctraddr; - ctraddr+=4; - CRYP->DR = *(uint32_t*)ctraddr; - ctraddr+=4; - CRYP->DR = *(uint32_t*)ctraddr; - ctraddr+=4; - CRYP->DR = *(uint32_t*)ctraddr; - - /* Get tick */ - tickstart = HAL_GetTick(); - - while(HAL_IS_BIT_CLR(CRYP->SR, CRYP_FLAG_OFNE)) - { - /* Check for the Timeout */ - if(Timeout != HAL_MAX_DELAY) - { - if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - } - - /* Read the Auth TAG in the IN FIFO */ - temptag[0] = CRYP->DOUT; - temptag[1] = CRYP->DOUT; - temptag[2] = CRYP->DOUT; - temptag[3] = CRYP->DOUT; - } - - /* Copy temporary authentication TAG in user TAG buffer */ - for(loopcounter = 0; loopcounter < hcryp->Init.TagSize ; loopcounter++) - { - /* Set the authentication TAG buffer */ - *((uint8_t*)tagaddr+loopcounter) = *((uint8_t*)temptag+loopcounter); - } - - /* Change the CRYP peripheral state */ - hcryp->State = HAL_CRYP_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - /* Return function status */ - return HAL_OK; -} - -/** - * @brief Initializes the CRYP peripheral in AES CCM decryption mode then - * decrypted pCypherData. The cypher data are available in pPlainData. - * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains - * the configuration information for CRYP module - * @param pPlainData: Pointer to the plaintext buffer - * @param Size: Length of the plaintext buffer, must be a multiple of 16 - * @param pCypherData: Pointer to the cyphertext buffer - * @param Timeout: Timeout duration - * @retval HAL status - */ -HAL_StatusTypeDef HAL_CRYPEx_AESCCM_Decrypt(CRYP_HandleTypeDef *hcryp, uint8_t *pCypherData, uint16_t Size, uint8_t *pPlainData, uint32_t Timeout) -{ - uint32_t tickstart = 0; - uint32_t headersize = hcryp->Init.HeaderSize; - uint32_t headeraddr = (uint32_t)hcryp->Init.Header; - uint32_t loopcounter = 0; - uint32_t bufferidx = 0; - uint8_t blockb0[16] = {0};/* Block B0 */ - uint8_t ctr[16] = {0}; /* Counter */ - uint32_t b0addr = (uint32_t)blockb0; - - /* Process Locked */ - __HAL_LOCK(hcryp); - - /* Change the CRYP peripheral state */ - hcryp->State = HAL_CRYP_STATE_BUSY; - - /* Check if initialization phase has already been performed */ - if(hcryp->Phase == HAL_CRYP_PHASE_READY) - { - /************************ Formatting the header block *********************/ - if(headersize != 0) - { - /* Check that the associated data (or header) length is lower than 2^16 - 2^8 = 65536 - 256 = 65280 */ - if(headersize < 65280) - { - hcryp->Init.pScratch[bufferidx++] = (uint8_t) ((headersize >> 8) & 0xFF); - hcryp->Init.pScratch[bufferidx++] = (uint8_t) ((headersize) & 0xFF); - headersize += 2; - } - else - { - /* Header is encoded as 0xff || 0xfe || [headersize]32, i.e., six octets */ - hcryp->Init.pScratch[bufferidx++] = 0xFF; - hcryp->Init.pScratch[bufferidx++] = 0xFE; - hcryp->Init.pScratch[bufferidx++] = headersize & 0xff000000; - hcryp->Init.pScratch[bufferidx++] = headersize & 0x00ff0000; - hcryp->Init.pScratch[bufferidx++] = headersize & 0x0000ff00; - hcryp->Init.pScratch[bufferidx++] = headersize & 0x000000ff; - headersize += 6; - } - /* Copy the header buffer in internal buffer "hcryp->Init.pScratch" */ - for(loopcounter = 0; loopcounter < headersize; loopcounter++) - { - hcryp->Init.pScratch[bufferidx++] = hcryp->Init.Header[loopcounter]; - } - /* Check if the header size is modulo 16 */ - if ((headersize % 16) != 0) - { - /* Padd the header buffer with 0s till the hcryp->Init.pScratch length is modulo 16 */ - for(loopcounter = headersize; loopcounter <= ((headersize/16) + 1) * 16; loopcounter++) - { - hcryp->Init.pScratch[loopcounter] = 0; - } - /* Set the header size to modulo 16 */ - headersize = ((headersize/16) + 1) * 16; - } - /* Set the pointer headeraddr to hcryp->Init.pScratch */ - headeraddr = (uint32_t)hcryp->Init.pScratch; - } - /*********************** Formatting the block B0 **************************/ - if(headersize != 0) - { - blockb0[0] = 0x40; - } - /* Flags byte */ - /* blockb0[0] |= 0u | (((( (uint8_t) hcryp->Init.TagSize - 2) / 2) & 0x07 ) << 3 ) | ( ( (uint8_t) (15 - hcryp->Init.IVSize) - 1) & 0x07) */ - blockb0[0] |= (uint8_t)((uint8_t)((uint8_t)(((uint8_t)(hcryp->Init.TagSize - (uint8_t)(2))) >> 1) & (uint8_t)0x07 ) << 3); - blockb0[0] |= (uint8_t)((uint8_t)((uint8_t)((uint8_t)(15) - hcryp->Init.IVSize) - (uint8_t)1) & (uint8_t)0x07); - - for (loopcounter = 0; loopcounter < hcryp->Init.IVSize; loopcounter++) - { - blockb0[loopcounter+1] = hcryp->Init.pInitVect[loopcounter]; - } - for ( ; loopcounter < 13; loopcounter++) - { - blockb0[loopcounter+1] = 0; - } - - blockb0[14] = (Size >> 8); - blockb0[15] = (Size & 0xFF); - - /************************* Formatting the initial counter *****************/ - /* Byte 0: - Bits 7 and 6 are reserved and shall be set to 0 - Bits 3, 4, and 5 shall also be set to 0, to ensure that all the counter - blocks are distinct from B0 - Bits 0, 1, and 2 contain the same encoding of q as in B0 - */ - ctr[0] = blockb0[0] & 0x07; - /* byte 1 to NonceSize is the IV (Nonce) */ - for(loopcounter = 1; loopcounter < hcryp->Init.IVSize + 1; loopcounter++) - { - ctr[loopcounter] = blockb0[loopcounter]; - } - /* Set the LSB to 1 */ - ctr[15] |= 0x01; - - /* Set the key */ - CRYPEx_GCMCCM_SetKey(hcryp, hcryp->Init.pKey, hcryp->Init.KeySize); - - /* Set the CRYP peripheral in AES CCM mode */ - __HAL_CRYP_SET_MODE(CRYP_CR_ALGOMODE_AES_CCM_DECRYPT); - - /* Set the Initialization Vector */ - CRYPEx_GCMCCM_SetInitVector(hcryp, ctr, CRYP_KEYSIZE_128B); - - /* Select init phase */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_INIT); - - b0addr = (uint32_t)blockb0; - /* Write the blockb0 block in the IN FIFO */ - CRYP->DR = *(uint32_t*)(b0addr); - b0addr+=4; - CRYP->DR = *(uint32_t*)(b0addr); - b0addr+=4; - CRYP->DR = *(uint32_t*)(b0addr); - b0addr+=4; - CRYP->DR = *(uint32_t*)(b0addr); - - /* Enable the CRYP peripheral */ - __HAL_CRYP_ENABLE(); - - /* Get tick */ - tickstart = HAL_GetTick(); - - while((CRYP->CR & CRYP_CR_CRYPEN) == CRYP_CR_CRYPEN) - { - /* Check for the Timeout */ - if(Timeout != HAL_MAX_DELAY) - { - if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - } - /***************************** Header phase *******************************/ - if(headersize != 0) - { - /* Select header phase */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_HEADER); - - /* Enable Crypto processor */ - __HAL_CRYP_ENABLE(); - - for(loopcounter = 0; (loopcounter < headersize); loopcounter+=16) - { - /* Get tick */ - tickstart = HAL_GetTick(); - - while(HAL_IS_BIT_CLR(CRYP->SR, CRYP_FLAG_IFEM)) - { - /* Check for the Timeout */ - if(Timeout != HAL_MAX_DELAY) - { - if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - } - /* Write the header block in the IN FIFO */ - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - } - - /* Get tick */ - tickstart = HAL_GetTick(); - - while((CRYP->SR & CRYP_FLAG_BUSY) == CRYP_FLAG_BUSY) - { - /* Check for the Timeout */ - if(Timeout != HAL_MAX_DELAY) - { - if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - } - } - /* Save formatted counter into the scratch buffer pScratch */ - for(loopcounter = 0; (loopcounter < 16); loopcounter++) - { - hcryp->Init.pScratch[loopcounter] = ctr[loopcounter]; - } - /* Reset bit 0 */ - hcryp->Init.pScratch[15] &= 0xfe; - /* Select payload phase once the header phase is performed */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_PAYLOAD); - - /* Flush FIFO */ - __HAL_CRYP_FIFO_FLUSH(); - - /* Enable the CRYP peripheral */ - __HAL_CRYP_ENABLE(); - - /* Set the phase */ - hcryp->Phase = HAL_CRYP_PHASE_PROCESS; - } - - /* Write Plain Data and Get Cypher Data */ - if(CRYPEx_GCMCCM_ProcessData(hcryp, pCypherData, Size, pPlainData, Timeout) != HAL_OK) - { - return HAL_TIMEOUT; - } - - /* Change the CRYP peripheral state */ - hcryp->State = HAL_CRYP_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - /* Return function status */ - return HAL_OK; -} - -/** - * @brief Initializes the CRYP peripheral in AES GCM encryption mode using IT. - * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains - * the configuration information for CRYP module - * @param pPlainData: Pointer to the plaintext buffer - * @param Size: Length of the plaintext buffer, must be a multiple of 16 - * @param pCypherData: Pointer to the cyphertext buffer - * @retval HAL status - */ -HAL_StatusTypeDef HAL_CRYPEx_AESGCM_Encrypt_IT(CRYP_HandleTypeDef *hcryp, uint8_t *pPlainData, uint16_t Size, uint8_t *pCypherData) -{ - uint32_t tickstart = 0; - uint32_t inputaddr; - uint32_t outputaddr; - - if(hcryp->State == HAL_CRYP_STATE_READY) - { - /* Process Locked */ - __HAL_LOCK(hcryp); - - /* Get the buffer addresses and sizes */ - hcryp->CrypInCount = Size; - hcryp->pCrypInBuffPtr = pPlainData; - hcryp->pCrypOutBuffPtr = pCypherData; - hcryp->CrypOutCount = Size; - - /* Change the CRYP peripheral state */ - hcryp->State = HAL_CRYP_STATE_BUSY; - - /* Check if initialization phase has already been performed */ - if(hcryp->Phase == HAL_CRYP_PHASE_READY) - { - /* Set the key */ - CRYPEx_GCMCCM_SetKey(hcryp, hcryp->Init.pKey, hcryp->Init.KeySize); - - /* Set the CRYP peripheral in AES GCM mode */ - __HAL_CRYP_SET_MODE(CRYP_CR_ALGOMODE_AES_GCM_ENCRYPT); - - /* Set the Initialization Vector */ - CRYPEx_GCMCCM_SetInitVector(hcryp, hcryp->Init.pInitVect, CRYP_KEYSIZE_128B); - - /* Flush FIFO */ - __HAL_CRYP_FIFO_FLUSH(); - - /* Enable CRYP to start the init phase */ - __HAL_CRYP_ENABLE(); - - /* Get tick */ - tickstart = HAL_GetTick(); - - while((CRYP->CR & CRYP_CR_CRYPEN) == CRYP_CR_CRYPEN) - { - /* Check for the Timeout */ - - if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - - } - } - - /* Set the header phase */ - if(CRYPEx_GCMCCM_SetHeaderPhase(hcryp, hcryp->Init.Header, hcryp->Init.HeaderSize, 1) != HAL_OK) - { - return HAL_TIMEOUT; - } - /* Disable the CRYP peripheral */ - __HAL_CRYP_DISABLE(); - - /* Select payload phase once the header phase is performed */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_PAYLOAD); - - /* Flush FIFO */ - __HAL_CRYP_FIFO_FLUSH(); - - /* Set the phase */ - hcryp->Phase = HAL_CRYP_PHASE_PROCESS; - } - - if(Size != 0) - { - /* Enable Interrupts */ - __HAL_CRYP_ENABLE_IT(CRYP_IT_INI | CRYP_IT_OUTI); - /* Enable the CRYP peripheral */ - __HAL_CRYP_ENABLE(); - } - else - { - /* Process Locked */ - __HAL_UNLOCK(hcryp); - /* Change the CRYP state and phase */ - hcryp->State = HAL_CRYP_STATE_READY; - } - /* Return function status */ - return HAL_OK; - } - else if (__HAL_CRYP_GET_IT(CRYP_IT_INI)) - { - inputaddr = (uint32_t)hcryp->pCrypInBuffPtr; - /* Write the Input block in the IN FIFO */ - CRYP->DR = *(uint32_t*)(inputaddr); - inputaddr+=4; - CRYP->DR = *(uint32_t*)(inputaddr); - inputaddr+=4; - CRYP->DR = *(uint32_t*)(inputaddr); - inputaddr+=4; - CRYP->DR = *(uint32_t*)(inputaddr); - hcryp->pCrypInBuffPtr += 16; - hcryp->CrypInCount -= 16; - if(hcryp->CrypInCount == 0) - { - __HAL_CRYP_DISABLE_IT(CRYP_IT_INI); - /* Call the Input data transfer complete callback */ - HAL_CRYP_InCpltCallback(hcryp); - } - } - else if (__HAL_CRYP_GET_IT(CRYP_IT_OUTI)) - { - outputaddr = (uint32_t)hcryp->pCrypOutBuffPtr; - /* Read the Output block from the Output FIFO */ - *(uint32_t*)(outputaddr) = CRYP->DOUT; - outputaddr+=4; - *(uint32_t*)(outputaddr) = CRYP->DOUT; - outputaddr+=4; - *(uint32_t*)(outputaddr) = CRYP->DOUT; - outputaddr+=4; - *(uint32_t*)(outputaddr) = CRYP->DOUT; - hcryp->pCrypOutBuffPtr += 16; - hcryp->CrypOutCount -= 16; - if(hcryp->CrypOutCount == 0) - { - __HAL_CRYP_DISABLE_IT(CRYP_IT_OUTI); - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - /* Change the CRYP peripheral state */ - hcryp->State = HAL_CRYP_STATE_READY; - /* Call Input transfer complete callback */ - HAL_CRYP_OutCpltCallback(hcryp); - } - } - - /* Return function status */ - return HAL_OK; -} - -/** - * @brief Initializes the CRYP peripheral in AES CCM encryption mode using interrupt. - * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains - * the configuration information for CRYP module - * @param pPlainData: Pointer to the plaintext buffer - * @param Size: Length of the plaintext buffer, must be a multiple of 16 - * @param pCypherData: Pointer to the cyphertext buffer - * @retval HAL status - */ -HAL_StatusTypeDef HAL_CRYPEx_AESCCM_Encrypt_IT(CRYP_HandleTypeDef *hcryp, uint8_t *pPlainData, uint16_t Size, uint8_t *pCypherData) -{ - uint32_t tickstart = 0; - uint32_t inputaddr; - uint32_t outputaddr; - - uint32_t headersize = hcryp->Init.HeaderSize; - uint32_t headeraddr = (uint32_t)hcryp->Init.Header; - uint32_t loopcounter = 0; - uint32_t bufferidx = 0; - uint8_t blockb0[16] = {0};/* Block B0 */ - uint8_t ctr[16] = {0}; /* Counter */ - uint32_t b0addr = (uint32_t)blockb0; - - if(hcryp->State == HAL_CRYP_STATE_READY) - { - /* Process Locked */ - __HAL_LOCK(hcryp); - - hcryp->CrypInCount = Size; - hcryp->pCrypInBuffPtr = pPlainData; - hcryp->pCrypOutBuffPtr = pCypherData; - hcryp->CrypOutCount = Size; - - /* Change the CRYP peripheral state */ - hcryp->State = HAL_CRYP_STATE_BUSY; - - /* Check if initialization phase has already been performed */ - if(hcryp->Phase == HAL_CRYP_PHASE_READY) - { - /************************ Formatting the header block *******************/ - if(headersize != 0) - { - /* Check that the associated data (or header) length is lower than 2^16 - 2^8 = 65536 - 256 = 65280 */ - if(headersize < 65280) - { - hcryp->Init.pScratch[bufferidx++] = (uint8_t) ((headersize >> 8) & 0xFF); - hcryp->Init.pScratch[bufferidx++] = (uint8_t) ((headersize) & 0xFF); - headersize += 2; - } - else - { - /* Header is encoded as 0xff || 0xfe || [headersize]32, i.e., six octets */ - hcryp->Init.pScratch[bufferidx++] = 0xFF; - hcryp->Init.pScratch[bufferidx++] = 0xFE; - hcryp->Init.pScratch[bufferidx++] = headersize & 0xff000000; - hcryp->Init.pScratch[bufferidx++] = headersize & 0x00ff0000; - hcryp->Init.pScratch[bufferidx++] = headersize & 0x0000ff00; - hcryp->Init.pScratch[bufferidx++] = headersize & 0x000000ff; - headersize += 6; - } - /* Copy the header buffer in internal buffer "hcryp->Init.pScratch" */ - for(loopcounter = 0; loopcounter < headersize; loopcounter++) - { - hcryp->Init.pScratch[bufferidx++] = hcryp->Init.Header[loopcounter]; - } - /* Check if the header size is modulo 16 */ - if ((headersize % 16) != 0) - { - /* Padd the header buffer with 0s till the hcryp->Init.pScratch length is modulo 16 */ - for(loopcounter = headersize; loopcounter <= ((headersize/16) + 1) * 16; loopcounter++) - { - hcryp->Init.pScratch[loopcounter] = 0; - } - /* Set the header size to modulo 16 */ - headersize = ((headersize/16) + 1) * 16; - } - /* Set the pointer headeraddr to hcryp->Init.pScratch */ - headeraddr = (uint32_t)hcryp->Init.pScratch; - } - /*********************** Formatting the block B0 ************************/ - if(headersize != 0) - { - blockb0[0] = 0x40; - } - /* Flags byte */ - /* blockb0[0] |= 0u | (((( (uint8_t) hcryp->Init.TagSize - 2) / 2) & 0x07 ) << 3 ) | ( ( (uint8_t) (15 - hcryp->Init.IVSize) - 1) & 0x07) */ - blockb0[0] |= (uint8_t)((uint8_t)((uint8_t)(((uint8_t)(hcryp->Init.TagSize - (uint8_t)(2))) >> 1) & (uint8_t)0x07 ) << 3); - blockb0[0] |= (uint8_t)((uint8_t)((uint8_t)((uint8_t)(15) - hcryp->Init.IVSize) - (uint8_t)1) & (uint8_t)0x07); - - for (loopcounter = 0; loopcounter < hcryp->Init.IVSize; loopcounter++) - { - blockb0[loopcounter+1] = hcryp->Init.pInitVect[loopcounter]; - } - for ( ; loopcounter < 13; loopcounter++) - { - blockb0[loopcounter+1] = 0; - } - - blockb0[14] = (Size >> 8); - blockb0[15] = (Size & 0xFF); - - /************************* Formatting the initial counter ***************/ - /* Byte 0: - Bits 7 and 6 are reserved and shall be set to 0 - Bits 3, 4, and 5 shall also be set to 0, to ensure that all the counter - blocks are distinct from B0 - Bits 0, 1, and 2 contain the same encoding of q as in B0 - */ - ctr[0] = blockb0[0] & 0x07; - /* byte 1 to NonceSize is the IV (Nonce) */ - for(loopcounter = 1; loopcounter < hcryp->Init.IVSize + 1; loopcounter++) - { - ctr[loopcounter] = blockb0[loopcounter]; - } - /* Set the LSB to 1 */ - ctr[15] |= 0x01; - - /* Set the key */ - CRYPEx_GCMCCM_SetKey(hcryp, hcryp->Init.pKey, hcryp->Init.KeySize); - - /* Set the CRYP peripheral in AES CCM mode */ - __HAL_CRYP_SET_MODE(CRYP_CR_ALGOMODE_AES_CCM_ENCRYPT); - - /* Set the Initialization Vector */ - CRYPEx_GCMCCM_SetInitVector(hcryp, ctr, hcryp->Init.KeySize); - - /* Select init phase */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_INIT); - - b0addr = (uint32_t)blockb0; - /* Write the blockb0 block in the IN FIFO */ - CRYP->DR = *(uint32_t*)(b0addr); - b0addr+=4; - CRYP->DR = *(uint32_t*)(b0addr); - b0addr+=4; - CRYP->DR = *(uint32_t*)(b0addr); - b0addr+=4; - CRYP->DR = *(uint32_t*)(b0addr); - - /* Enable the CRYP peripheral */ - __HAL_CRYP_ENABLE(); - - /* Get tick */ - tickstart = HAL_GetTick(); - - while((CRYP->CR & CRYP_CR_CRYPEN) == CRYP_CR_CRYPEN) - { - /* Check for the Timeout */ - if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - /***************************** Header phase *****************************/ - if(headersize != 0) - { - /* Select header phase */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_HEADER); - - /* Enable Crypto processor */ - __HAL_CRYP_ENABLE(); - - for(loopcounter = 0; (loopcounter < headersize); loopcounter+=16) - { - /* Get tick */ - tickstart = HAL_GetTick(); - - while(HAL_IS_BIT_CLR(CRYP->SR, CRYP_FLAG_IFEM)) - { - /* Check for the Timeout */ - if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - /* Write the header block in the IN FIFO */ - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - } - - /* Get tick */ - tickstart = HAL_GetTick(); - - while((CRYP->SR & CRYP_FLAG_BUSY) == CRYP_FLAG_BUSY) - { - /* Check for the Timeout */ - if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - } - /* Save formatted counter into the scratch buffer pScratch */ - for(loopcounter = 0; (loopcounter < 16); loopcounter++) - { - hcryp->Init.pScratch[loopcounter] = ctr[loopcounter]; - } - /* Reset bit 0 */ - hcryp->Init.pScratch[15] &= 0xfe; - - /* Select payload phase once the header phase is performed */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_PAYLOAD); - - /* Flush FIFO */ - __HAL_CRYP_FIFO_FLUSH(); - - /* Set the phase */ - hcryp->Phase = HAL_CRYP_PHASE_PROCESS; - } - - if(Size != 0) - { - /* Enable Interrupts */ - __HAL_CRYP_ENABLE_IT(CRYP_IT_INI | CRYP_IT_OUTI); - /* Enable the CRYP peripheral */ - __HAL_CRYP_ENABLE(); - } - else - { - /* Change the CRYP state and phase */ - hcryp->State = HAL_CRYP_STATE_READY; - } - - /* Return function status */ - return HAL_OK; - } - else if (__HAL_CRYP_GET_IT(CRYP_IT_INI)) - { - inputaddr = (uint32_t)hcryp->pCrypInBuffPtr; - /* Write the Input block in the IN FIFO */ - CRYP->DR = *(uint32_t*)(inputaddr); - inputaddr+=4; - CRYP->DR = *(uint32_t*)(inputaddr); - inputaddr+=4; - CRYP->DR = *(uint32_t*)(inputaddr); - inputaddr+=4; - CRYP->DR = *(uint32_t*)(inputaddr); - hcryp->pCrypInBuffPtr += 16; - hcryp->CrypInCount -= 16; - if(hcryp->CrypInCount == 0) - { - __HAL_CRYP_DISABLE_IT(CRYP_IT_INI); - /* Call Input transfer complete callback */ - HAL_CRYP_InCpltCallback(hcryp); - } - } - else if (__HAL_CRYP_GET_IT(CRYP_IT_OUTI)) - { - outputaddr = (uint32_t)hcryp->pCrypOutBuffPtr; - /* Read the Output block from the Output FIFO */ - *(uint32_t*)(outputaddr) = CRYP->DOUT; - outputaddr+=4; - *(uint32_t*)(outputaddr) = CRYP->DOUT; - outputaddr+=4; - *(uint32_t*)(outputaddr) = CRYP->DOUT; - outputaddr+=4; - *(uint32_t*)(outputaddr) = CRYP->DOUT; - hcryp->pCrypOutBuffPtr += 16; - hcryp->CrypOutCount -= 16; - if(hcryp->CrypOutCount == 0) - { - __HAL_CRYP_DISABLE_IT(CRYP_IT_OUTI); - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - /* Change the CRYP peripheral state */ - hcryp->State = HAL_CRYP_STATE_READY; - /* Call Input transfer complete callback */ - HAL_CRYP_OutCpltCallback(hcryp); - } - } - - /* Return function status */ - return HAL_OK; -} - -/** - * @brief Initializes the CRYP peripheral in AES GCM decryption mode using IT. - * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains - * the configuration information for CRYP module - * @param pCypherData: Pointer to the cyphertext buffer - * @param Size: Length of the cyphertext buffer, must be a multiple of 16 - * @param pPlainData: Pointer to the plaintext buffer - * @retval HAL status - */ -HAL_StatusTypeDef HAL_CRYPEx_AESGCM_Decrypt_IT(CRYP_HandleTypeDef *hcryp, uint8_t *pCypherData, uint16_t Size, uint8_t *pPlainData) -{ - uint32_t tickstart = 0; - uint32_t inputaddr; - uint32_t outputaddr; - - if(hcryp->State == HAL_CRYP_STATE_READY) - { - /* Process Locked */ - __HAL_LOCK(hcryp); - - /* Get the buffer addresses and sizes */ - hcryp->CrypInCount = Size; - hcryp->pCrypInBuffPtr = pCypherData; - hcryp->pCrypOutBuffPtr = pPlainData; - hcryp->CrypOutCount = Size; - - /* Change the CRYP peripheral state */ - hcryp->State = HAL_CRYP_STATE_BUSY; - - /* Check if initialization phase has already been performed */ - if(hcryp->Phase == HAL_CRYP_PHASE_READY) - { - /* Set the key */ - CRYPEx_GCMCCM_SetKey(hcryp, hcryp->Init.pKey, hcryp->Init.KeySize); - - /* Set the CRYP peripheral in AES GCM decryption mode */ - __HAL_CRYP_SET_MODE(CRYP_CR_ALGOMODE_AES_GCM_DECRYPT); - - /* Set the Initialization Vector */ - CRYPEx_GCMCCM_SetInitVector(hcryp, hcryp->Init.pInitVect, CRYP_KEYSIZE_128B); - - /* Flush FIFO */ - __HAL_CRYP_FIFO_FLUSH(); - - /* Enable CRYP to start the init phase */ - __HAL_CRYP_ENABLE(); - - /* Get tick */ - tickstart = HAL_GetTick(); - - while((CRYP->CR & CRYP_CR_CRYPEN) == CRYP_CR_CRYPEN) - { - /* Check for the Timeout */ - if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - - /* Set the header phase */ - if(CRYPEx_GCMCCM_SetHeaderPhase(hcryp, hcryp->Init.Header, hcryp->Init.HeaderSize, 1) != HAL_OK) - { - return HAL_TIMEOUT; - } - /* Disable the CRYP peripheral */ - __HAL_CRYP_DISABLE(); - - /* Select payload phase once the header phase is performed */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_PAYLOAD); - - /* Set the phase */ - hcryp->Phase = HAL_CRYP_PHASE_PROCESS; - } - - if(Size != 0) - { - /* Enable Interrupts */ - __HAL_CRYP_ENABLE_IT(CRYP_IT_INI | CRYP_IT_OUTI); - /* Enable the CRYP peripheral */ - __HAL_CRYP_ENABLE(); - } - else - { - /* Process Locked */ - __HAL_UNLOCK(hcryp); - /* Change the CRYP state and phase */ - hcryp->State = HAL_CRYP_STATE_READY; - } - - /* Return function status */ - return HAL_OK; - } - else if (__HAL_CRYP_GET_IT(CRYP_IT_INI)) - { - inputaddr = (uint32_t)hcryp->pCrypInBuffPtr; - /* Write the Input block in the IN FIFO */ - CRYP->DR = *(uint32_t*)(inputaddr); - inputaddr+=4; - CRYP->DR = *(uint32_t*)(inputaddr); - inputaddr+=4; - CRYP->DR = *(uint32_t*)(inputaddr); - inputaddr+=4; - CRYP->DR = *(uint32_t*)(inputaddr); - hcryp->pCrypInBuffPtr += 16; - hcryp->CrypInCount -= 16; - if(hcryp->CrypInCount == 0) - { - __HAL_CRYP_DISABLE_IT(CRYP_IT_INI); - /* Call the Input data transfer complete callback */ - HAL_CRYP_InCpltCallback(hcryp); - } - } - else if (__HAL_CRYP_GET_IT(CRYP_IT_OUTI)) - { - outputaddr = (uint32_t)hcryp->pCrypOutBuffPtr; - /* Read the Output block from the Output FIFO */ - *(uint32_t*)(outputaddr) = CRYP->DOUT; - outputaddr+=4; - *(uint32_t*)(outputaddr) = CRYP->DOUT; - outputaddr+=4; - *(uint32_t*)(outputaddr) = CRYP->DOUT; - outputaddr+=4; - *(uint32_t*)(outputaddr) = CRYP->DOUT; - hcryp->pCrypOutBuffPtr += 16; - hcryp->CrypOutCount -= 16; - if(hcryp->CrypOutCount == 0) - { - __HAL_CRYP_DISABLE_IT(CRYP_IT_OUTI); - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - /* Change the CRYP peripheral state */ - hcryp->State = HAL_CRYP_STATE_READY; - /* Call Input transfer complete callback */ - HAL_CRYP_OutCpltCallback(hcryp); - } - } - - /* Return function status */ - return HAL_OK; -} - -/** - * @brief Initializes the CRYP peripheral in AES CCM decryption mode using interrupt - * then decrypted pCypherData. The cypher data are available in pPlainData. - * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains - * the configuration information for CRYP module - * @param pCypherData: Pointer to the cyphertext buffer - * @param Size: Length of the plaintext buffer, must be a multiple of 16 - * @param pPlainData: Pointer to the plaintext buffer - * @retval HAL status - */ -HAL_StatusTypeDef HAL_CRYPEx_AESCCM_Decrypt_IT(CRYP_HandleTypeDef *hcryp, uint8_t *pCypherData, uint16_t Size, uint8_t *pPlainData) -{ - uint32_t inputaddr; - uint32_t outputaddr; - uint32_t tickstart = 0; - uint32_t headersize = hcryp->Init.HeaderSize; - uint32_t headeraddr = (uint32_t)hcryp->Init.Header; - uint32_t loopcounter = 0; - uint32_t bufferidx = 0; - uint8_t blockb0[16] = {0};/* Block B0 */ - uint8_t ctr[16] = {0}; /* Counter */ - uint32_t b0addr = (uint32_t)blockb0; - - if(hcryp->State == HAL_CRYP_STATE_READY) - { - /* Process Locked */ - __HAL_LOCK(hcryp); - - hcryp->CrypInCount = Size; - hcryp->pCrypInBuffPtr = pCypherData; - hcryp->pCrypOutBuffPtr = pPlainData; - hcryp->CrypOutCount = Size; - - /* Change the CRYP peripheral state */ - hcryp->State = HAL_CRYP_STATE_BUSY; - - /* Check if initialization phase has already been performed */ - if(hcryp->Phase == HAL_CRYP_PHASE_READY) - { - /************************ Formatting the header block *******************/ - if(headersize != 0) - { - /* Check that the associated data (or header) length is lower than 2^16 - 2^8 = 65536 - 256 = 65280 */ - if(headersize < 65280) - { - hcryp->Init.pScratch[bufferidx++] = (uint8_t) ((headersize >> 8) & 0xFF); - hcryp->Init.pScratch[bufferidx++] = (uint8_t) ((headersize) & 0xFF); - headersize += 2; - } - else - { - /* Header is encoded as 0xff || 0xfe || [headersize]32, i.e., six octets */ - hcryp->Init.pScratch[bufferidx++] = 0xFF; - hcryp->Init.pScratch[bufferidx++] = 0xFE; - hcryp->Init.pScratch[bufferidx++] = headersize & 0xff000000; - hcryp->Init.pScratch[bufferidx++] = headersize & 0x00ff0000; - hcryp->Init.pScratch[bufferidx++] = headersize & 0x0000ff00; - hcryp->Init.pScratch[bufferidx++] = headersize & 0x000000ff; - headersize += 6; - } - /* Copy the header buffer in internal buffer "hcryp->Init.pScratch" */ - for(loopcounter = 0; loopcounter < headersize; loopcounter++) - { - hcryp->Init.pScratch[bufferidx++] = hcryp->Init.Header[loopcounter]; - } - /* Check if the header size is modulo 16 */ - if ((headersize % 16) != 0) - { - /* Padd the header buffer with 0s till the hcryp->Init.pScratch length is modulo 16 */ - for(loopcounter = headersize; loopcounter <= ((headersize/16) + 1) * 16; loopcounter++) - { - hcryp->Init.pScratch[loopcounter] = 0; - } - /* Set the header size to modulo 16 */ - headersize = ((headersize/16) + 1) * 16; - } - /* Set the pointer headeraddr to hcryp->Init.pScratch */ - headeraddr = (uint32_t)hcryp->Init.pScratch; - } - /*********************** Formatting the block B0 ************************/ - if(headersize != 0) - { - blockb0[0] = 0x40; - } - /* Flags byte */ - /* blockb0[0] |= 0u | (((( (uint8_t) hcryp->Init.TagSize - 2) / 2) & 0x07 ) << 3 ) | ( ( (uint8_t) (15 - hcryp->Init.IVSize) - 1) & 0x07) */ - blockb0[0] |= (uint8_t)((uint8_t)((uint8_t)(((uint8_t)(hcryp->Init.TagSize - (uint8_t)(2))) >> 1) & (uint8_t)0x07 ) << 3); - blockb0[0] |= (uint8_t)((uint8_t)((uint8_t)((uint8_t)(15) - hcryp->Init.IVSize) - (uint8_t)1) & (uint8_t)0x07); - - for (loopcounter = 0; loopcounter < hcryp->Init.IVSize; loopcounter++) - { - blockb0[loopcounter+1] = hcryp->Init.pInitVect[loopcounter]; - } - for ( ; loopcounter < 13; loopcounter++) - { - blockb0[loopcounter+1] = 0; - } - - blockb0[14] = (Size >> 8); - blockb0[15] = (Size & 0xFF); - - /************************* Formatting the initial counter ***************/ - /* Byte 0: - Bits 7 and 6 are reserved and shall be set to 0 - Bits 3, 4, and 5 shall also be set to 0, to ensure that all the counter - blocks are distinct from B0 - Bits 0, 1, and 2 contain the same encoding of q as in B0 - */ - ctr[0] = blockb0[0] & 0x07; - /* byte 1 to NonceSize is the IV (Nonce) */ - for(loopcounter = 1; loopcounter < hcryp->Init.IVSize + 1; loopcounter++) - { - ctr[loopcounter] = blockb0[loopcounter]; - } - /* Set the LSB to 1 */ - ctr[15] |= 0x01; - - /* Set the key */ - CRYPEx_GCMCCM_SetKey(hcryp, hcryp->Init.pKey, hcryp->Init.KeySize); - - /* Set the CRYP peripheral in AES CCM mode */ - __HAL_CRYP_SET_MODE(CRYP_CR_ALGOMODE_AES_CCM_DECRYPT); - - /* Set the Initialization Vector */ - CRYPEx_GCMCCM_SetInitVector(hcryp, ctr, hcryp->Init.KeySize); - - /* Select init phase */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_INIT); - - b0addr = (uint32_t)blockb0; - /* Write the blockb0 block in the IN FIFO */ - CRYP->DR = *(uint32_t*)(b0addr); - b0addr+=4; - CRYP->DR = *(uint32_t*)(b0addr); - b0addr+=4; - CRYP->DR = *(uint32_t*)(b0addr); - b0addr+=4; - CRYP->DR = *(uint32_t*)(b0addr); - - /* Enable the CRYP peripheral */ - __HAL_CRYP_ENABLE(); - - /* Get tick */ - tickstart = HAL_GetTick(); - - while((CRYP->CR & CRYP_CR_CRYPEN) == CRYP_CR_CRYPEN) - { - /* Check for the Timeout */ - if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - /***************************** Header phase *****************************/ - if(headersize != 0) - { - /* Select header phase */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_HEADER); - - /* Enable Crypto processor */ - __HAL_CRYP_ENABLE(); - - for(loopcounter = 0; (loopcounter < headersize); loopcounter+=16) - { - /* Get tick */ - tickstart = HAL_GetTick(); - - while(HAL_IS_BIT_CLR(CRYP->SR, CRYP_FLAG_IFEM)) - { - /* Check for the Timeout */ - if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - /* Write the header block in the IN FIFO */ - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - } - - /* Get tick */ - tickstart = HAL_GetTick(); - - while((CRYP->SR & CRYP_FLAG_BUSY) == CRYP_FLAG_BUSY) - { - /* Check for the Timeout */ - if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - } - /* Save formatted counter into the scratch buffer pScratch */ - for(loopcounter = 0; (loopcounter < 16); loopcounter++) - { - hcryp->Init.pScratch[loopcounter] = ctr[loopcounter]; - } - /* Reset bit 0 */ - hcryp->Init.pScratch[15] &= 0xfe; - /* Select payload phase once the header phase is performed */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_PAYLOAD); - - /* Flush FIFO */ - __HAL_CRYP_FIFO_FLUSH(); - - /* Set the phase */ - hcryp->Phase = HAL_CRYP_PHASE_PROCESS; - } - - /* Enable Interrupts */ - __HAL_CRYP_ENABLE_IT(CRYP_IT_INI | CRYP_IT_OUTI); - - /* Enable the CRYP peripheral */ - __HAL_CRYP_ENABLE(); - - /* Return function status */ - return HAL_OK; - } - else if (__HAL_CRYP_GET_IT(CRYP_IT_INI)) - { - inputaddr = (uint32_t)hcryp->pCrypInBuffPtr; - /* Write the Input block in the IN FIFO */ - CRYP->DR = *(uint32_t*)(inputaddr); - inputaddr+=4; - CRYP->DR = *(uint32_t*)(inputaddr); - inputaddr+=4; - CRYP->DR = *(uint32_t*)(inputaddr); - inputaddr+=4; - CRYP->DR = *(uint32_t*)(inputaddr); - hcryp->pCrypInBuffPtr += 16; - hcryp->CrypInCount -= 16; - if(hcryp->CrypInCount == 0) - { - __HAL_CRYP_DISABLE_IT(CRYP_IT_INI); - /* Call the Input data transfer complete callback */ - HAL_CRYP_InCpltCallback(hcryp); - } - } - else if (__HAL_CRYP_GET_IT(CRYP_IT_OUTI)) - { - outputaddr = (uint32_t)hcryp->pCrypOutBuffPtr; - /* Read the Output block from the Output FIFO */ - *(uint32_t*)(outputaddr) = CRYP->DOUT; - outputaddr+=4; - *(uint32_t*)(outputaddr) = CRYP->DOUT; - outputaddr+=4; - *(uint32_t*)(outputaddr) = CRYP->DOUT; - outputaddr+=4; - *(uint32_t*)(outputaddr) = CRYP->DOUT; - hcryp->pCrypOutBuffPtr += 16; - hcryp->CrypOutCount -= 16; - if(hcryp->CrypOutCount == 0) - { - __HAL_CRYP_DISABLE_IT(CRYP_IT_OUTI); - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - /* Change the CRYP peripheral state */ - hcryp->State = HAL_CRYP_STATE_READY; - /* Call Input transfer complete callback */ - HAL_CRYP_OutCpltCallback(hcryp); - } - } - - /* Return function status */ - return HAL_OK; -} - -/** - * @brief Initializes the CRYP peripheral in AES GCM encryption mode using DMA. - * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains - * the configuration information for CRYP module - * @param pPlainData: Pointer to the plaintext buffer - * @param Size: Length of the plaintext buffer, must be a multiple of 16 - * @param pCypherData: Pointer to the cyphertext buffer - * @retval HAL status - */ -HAL_StatusTypeDef HAL_CRYPEx_AESGCM_Encrypt_DMA(CRYP_HandleTypeDef *hcryp, uint8_t *pPlainData, uint16_t Size, uint8_t *pCypherData) -{ - uint32_t tickstart = 0; - uint32_t inputaddr; - uint32_t outputaddr; - - if((hcryp->State == HAL_CRYP_STATE_READY) || (hcryp->Phase == HAL_CRYP_PHASE_PROCESS)) - { - /* Process Locked */ - __HAL_LOCK(hcryp); - - inputaddr = (uint32_t)pPlainData; - outputaddr = (uint32_t)pCypherData; - - /* Change the CRYP peripheral state */ - hcryp->State = HAL_CRYP_STATE_BUSY; - - /* Check if initialization phase has already been performed */ - if(hcryp->Phase == HAL_CRYP_PHASE_READY) - { - /* Set the key */ - CRYPEx_GCMCCM_SetKey(hcryp, hcryp->Init.pKey, hcryp->Init.KeySize); - - /* Set the CRYP peripheral in AES GCM mode */ - __HAL_CRYP_SET_MODE(CRYP_CR_ALGOMODE_AES_GCM_ENCRYPT); - - /* Set the Initialization Vector */ - CRYPEx_GCMCCM_SetInitVector(hcryp, hcryp->Init.pInitVect, CRYP_KEYSIZE_128B); - - /* Flush FIFO */ - __HAL_CRYP_FIFO_FLUSH(); - - /* Enable CRYP to start the init phase */ - __HAL_CRYP_ENABLE(); - - /* Get tick */ - tickstart = HAL_GetTick(); - - while((CRYP->CR & CRYP_CR_CRYPEN) == CRYP_CR_CRYPEN) - { - /* Check for the Timeout */ - if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - /* Flush FIFO */ - __HAL_CRYP_FIFO_FLUSH(); - - /* Set the header phase */ - if(CRYPEx_GCMCCM_SetHeaderPhase(hcryp, hcryp->Init.Header, hcryp->Init.HeaderSize, 1) != HAL_OK) - { - return HAL_TIMEOUT; - } - /* Disable the CRYP peripheral */ - __HAL_CRYP_DISABLE(); - - /* Select payload phase once the header phase is performed */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_PAYLOAD); - - /* Flush FIFO */ - __HAL_CRYP_FIFO_FLUSH(); - - /* Set the phase */ - hcryp->Phase = HAL_CRYP_PHASE_PROCESS; - } - - /* Set the input and output addresses and start DMA transfer */ - CRYPEx_GCMCCM_SetDMAConfig(hcryp, inputaddr, Size, outputaddr); - - /* Unlock process */ - __HAL_UNLOCK(hcryp); - - /* Return function status */ - return HAL_OK; - } - else - { - return HAL_ERROR; - } -} - -/** - * @brief Initializes the CRYP peripheral in AES CCM encryption mode using interrupt. - * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains - * the configuration information for CRYP module - * @param pPlainData: Pointer to the plaintext buffer - * @param Size: Length of the plaintext buffer, must be a multiple of 16 - * @param pCypherData: Pointer to the cyphertext buffer - * @retval HAL status - */ -HAL_StatusTypeDef HAL_CRYPEx_AESCCM_Encrypt_DMA(CRYP_HandleTypeDef *hcryp, uint8_t *pPlainData, uint16_t Size, uint8_t *pCypherData) -{ - uint32_t tickstart = 0; - uint32_t inputaddr; - uint32_t outputaddr; - uint32_t headersize; - uint32_t headeraddr; - uint32_t loopcounter = 0; - uint32_t bufferidx = 0; - uint8_t blockb0[16] = {0};/* Block B0 */ - uint8_t ctr[16] = {0}; /* Counter */ - uint32_t b0addr = (uint32_t)blockb0; - - if((hcryp->State == HAL_CRYP_STATE_READY) || (hcryp->Phase == HAL_CRYP_PHASE_PROCESS)) - { - /* Process Locked */ - __HAL_LOCK(hcryp); - - inputaddr = (uint32_t)pPlainData; - outputaddr = (uint32_t)pCypherData; - - headersize = hcryp->Init.HeaderSize; - headeraddr = (uint32_t)hcryp->Init.Header; - - hcryp->CrypInCount = Size; - hcryp->pCrypInBuffPtr = pPlainData; - hcryp->pCrypOutBuffPtr = pCypherData; - hcryp->CrypOutCount = Size; - - /* Change the CRYP peripheral state */ - hcryp->State = HAL_CRYP_STATE_BUSY; - - /* Check if initialization phase has already been performed */ - if(hcryp->Phase == HAL_CRYP_PHASE_READY) - { - /************************ Formatting the header block *******************/ - if(headersize != 0) - { - /* Check that the associated data (or header) length is lower than 2^16 - 2^8 = 65536 - 256 = 65280 */ - if(headersize < 65280) - { - hcryp->Init.pScratch[bufferidx++] = (uint8_t) ((headersize >> 8) & 0xFF); - hcryp->Init.pScratch[bufferidx++] = (uint8_t) ((headersize) & 0xFF); - headersize += 2; - } - else - { - /* Header is encoded as 0xff || 0xfe || [headersize]32, i.e., six octets */ - hcryp->Init.pScratch[bufferidx++] = 0xFF; - hcryp->Init.pScratch[bufferidx++] = 0xFE; - hcryp->Init.pScratch[bufferidx++] = headersize & 0xff000000; - hcryp->Init.pScratch[bufferidx++] = headersize & 0x00ff0000; - hcryp->Init.pScratch[bufferidx++] = headersize & 0x0000ff00; - hcryp->Init.pScratch[bufferidx++] = headersize & 0x000000ff; - headersize += 6; - } - /* Copy the header buffer in internal buffer "hcryp->Init.pScratch" */ - for(loopcounter = 0; loopcounter < headersize; loopcounter++) - { - hcryp->Init.pScratch[bufferidx++] = hcryp->Init.Header[loopcounter]; - } - /* Check if the header size is modulo 16 */ - if ((headersize % 16) != 0) - { - /* Padd the header buffer with 0s till the hcryp->Init.pScratch length is modulo 16 */ - for(loopcounter = headersize; loopcounter <= ((headersize/16) + 1) * 16; loopcounter++) - { - hcryp->Init.pScratch[loopcounter] = 0; - } - /* Set the header size to modulo 16 */ - headersize = ((headersize/16) + 1) * 16; - } - /* Set the pointer headeraddr to hcryp->Init.pScratch */ - headeraddr = (uint32_t)hcryp->Init.pScratch; - } - /*********************** Formatting the block B0 ************************/ - if(headersize != 0) - { - blockb0[0] = 0x40; - } - /* Flags byte */ - /* blockb0[0] |= 0u | (((( (uint8_t) hcryp->Init.TagSize - 2) / 2) & 0x07 ) << 3 ) | ( ( (uint8_t) (15 - hcryp->Init.IVSize) - 1) & 0x07) */ - blockb0[0] |= (uint8_t)((uint8_t)((uint8_t)(((uint8_t)(hcryp->Init.TagSize - (uint8_t)(2))) >> 1) & (uint8_t)0x07 ) << 3); - blockb0[0] |= (uint8_t)((uint8_t)((uint8_t)((uint8_t)(15) - hcryp->Init.IVSize) - (uint8_t)1) & (uint8_t)0x07); - - for (loopcounter = 0; loopcounter < hcryp->Init.IVSize; loopcounter++) - { - blockb0[loopcounter+1] = hcryp->Init.pInitVect[loopcounter]; - } - for ( ; loopcounter < 13; loopcounter++) - { - blockb0[loopcounter+1] = 0; - } - - blockb0[14] = (Size >> 8); - blockb0[15] = (Size & 0xFF); - - /************************* Formatting the initial counter ***************/ - /* Byte 0: - Bits 7 and 6 are reserved and shall be set to 0 - Bits 3, 4, and 5 shall also be set to 0, to ensure that all the counter - blocks are distinct from B0 - Bits 0, 1, and 2 contain the same encoding of q as in B0 - */ - ctr[0] = blockb0[0] & 0x07; - /* byte 1 to NonceSize is the IV (Nonce) */ - for(loopcounter = 1; loopcounter < hcryp->Init.IVSize + 1; loopcounter++) - { - ctr[loopcounter] = blockb0[loopcounter]; - } - /* Set the LSB to 1 */ - ctr[15] |= 0x01; - - /* Set the key */ - CRYPEx_GCMCCM_SetKey(hcryp, hcryp->Init.pKey, hcryp->Init.KeySize); - - /* Set the CRYP peripheral in AES CCM mode */ - __HAL_CRYP_SET_MODE(CRYP_CR_ALGOMODE_AES_CCM_ENCRYPT); - - /* Set the Initialization Vector */ - CRYPEx_GCMCCM_SetInitVector(hcryp, ctr, CRYP_KEYSIZE_128B); - - /* Select init phase */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_INIT); - - b0addr = (uint32_t)blockb0; - /* Write the blockb0 block in the IN FIFO */ - CRYP->DR = *(uint32_t*)(b0addr); - b0addr+=4; - CRYP->DR = *(uint32_t*)(b0addr); - b0addr+=4; - CRYP->DR = *(uint32_t*)(b0addr); - b0addr+=4; - CRYP->DR = *(uint32_t*)(b0addr); - - /* Enable the CRYP peripheral */ - __HAL_CRYP_ENABLE(); - - /* Get tick */ - tickstart = HAL_GetTick(); - - while((CRYP->CR & CRYP_CR_CRYPEN) == CRYP_CR_CRYPEN) - { - /* Check for the Timeout */ - if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - /***************************** Header phase *****************************/ - if(headersize != 0) - { - /* Select header phase */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_HEADER); - - /* Enable Crypto processor */ - __HAL_CRYP_ENABLE(); - - for(loopcounter = 0; (loopcounter < headersize); loopcounter+=16) - { - /* Get tick */ - tickstart = HAL_GetTick(); - - while(HAL_IS_BIT_CLR(CRYP->SR, CRYP_FLAG_IFEM)) - { - /* Check for the Timeout */ - if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - /* Write the header block in the IN FIFO */ - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - } - - /* Get tick */ - tickstart = HAL_GetTick(); - - while((CRYP->SR & CRYP_FLAG_BUSY) == CRYP_FLAG_BUSY) - { - /* Check for the Timeout */ - if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - } - /* Save formatted counter into the scratch buffer pScratch */ - for(loopcounter = 0; (loopcounter < 16); loopcounter++) - { - hcryp->Init.pScratch[loopcounter] = ctr[loopcounter]; - } - /* Reset bit 0 */ - hcryp->Init.pScratch[15] &= 0xfe; - - /* Select payload phase once the header phase is performed */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_PAYLOAD); - - /* Flush FIFO */ - __HAL_CRYP_FIFO_FLUSH(); - - /* Set the phase */ - hcryp->Phase = HAL_CRYP_PHASE_PROCESS; - } - - /* Set the input and output addresses and start DMA transfer */ - CRYPEx_GCMCCM_SetDMAConfig(hcryp, inputaddr, Size, outputaddr); - - /* Unlock process */ - __HAL_UNLOCK(hcryp); - - /* Return function status */ - return HAL_OK; - } - else - { - return HAL_ERROR; - } -} - -/** - * @brief Initializes the CRYP peripheral in AES GCM decryption mode using DMA. - * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains - * the configuration information for CRYP module - * @param pCypherData: Pointer to the cyphertext buffer. - * @param Size: Length of the cyphertext buffer, must be a multiple of 16 - * @param pPlainData: Pointer to the plaintext buffer - * @retval HAL status - */ -HAL_StatusTypeDef HAL_CRYPEx_AESGCM_Decrypt_DMA(CRYP_HandleTypeDef *hcryp, uint8_t *pCypherData, uint16_t Size, uint8_t *pPlainData) -{ - uint32_t tickstart = 0; - uint32_t inputaddr; - uint32_t outputaddr; - - if((hcryp->State == HAL_CRYP_STATE_READY) || (hcryp->Phase == HAL_CRYP_PHASE_PROCESS)) - { - /* Process Locked */ - __HAL_LOCK(hcryp); - - inputaddr = (uint32_t)pCypherData; - outputaddr = (uint32_t)pPlainData; - - /* Change the CRYP peripheral state */ - hcryp->State = HAL_CRYP_STATE_BUSY; - - /* Check if initialization phase has already been performed */ - if(hcryp->Phase == HAL_CRYP_PHASE_READY) - { - /* Set the key */ - CRYPEx_GCMCCM_SetKey(hcryp, hcryp->Init.pKey, hcryp->Init.KeySize); - - /* Set the CRYP peripheral in AES GCM decryption mode */ - __HAL_CRYP_SET_MODE(CRYP_CR_ALGOMODE_AES_GCM_DECRYPT); - - /* Set the Initialization Vector */ - CRYPEx_GCMCCM_SetInitVector(hcryp, hcryp->Init.pInitVect, CRYP_KEYSIZE_128B); - - /* Enable CRYP to start the init phase */ - __HAL_CRYP_ENABLE(); - - /* Get tick */ - tickstart = HAL_GetTick(); - - while((CRYP->CR & CRYP_CR_CRYPEN) == CRYP_CR_CRYPEN) - { - /* Check for the Timeout */ - if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - - /* Set the header phase */ - if(CRYPEx_GCMCCM_SetHeaderPhase(hcryp, hcryp->Init.Header, hcryp->Init.HeaderSize, 1) != HAL_OK) - { - return HAL_TIMEOUT; - } - /* Disable the CRYP peripheral */ - __HAL_CRYP_DISABLE(); - - /* Select payload phase once the header phase is performed */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_PAYLOAD); - - /* Set the phase */ - hcryp->Phase = HAL_CRYP_PHASE_PROCESS; - } - - /* Set the input and output addresses and start DMA transfer */ - CRYPEx_GCMCCM_SetDMAConfig(hcryp, inputaddr, Size, outputaddr); - - /* Unlock process */ - __HAL_UNLOCK(hcryp); - - /* Return function status */ - return HAL_OK; - } - else - { - return HAL_ERROR; - } -} - -/** - * @brief Initializes the CRYP peripheral in AES CCM decryption mode using DMA - * then decrypted pCypherData. The cypher data are available in pPlainData. - * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains - * the configuration information for CRYP module - * @param pCypherData: Pointer to the cyphertext buffer - * @param Size: Length of the plaintext buffer, must be a multiple of 16 - * @param pPlainData: Pointer to the plaintext buffer - * @retval HAL status - */ -HAL_StatusTypeDef HAL_CRYPEx_AESCCM_Decrypt_DMA(CRYP_HandleTypeDef *hcryp, uint8_t *pCypherData, uint16_t Size, uint8_t *pPlainData) -{ - uint32_t tickstart = 0; - uint32_t inputaddr; - uint32_t outputaddr; - uint32_t headersize; - uint32_t headeraddr; - uint32_t loopcounter = 0; - uint32_t bufferidx = 0; - uint8_t blockb0[16] = {0};/* Block B0 */ - uint8_t ctr[16] = {0}; /* Counter */ - uint32_t b0addr = (uint32_t)blockb0; - - if((hcryp->State == HAL_CRYP_STATE_READY) || (hcryp->Phase == HAL_CRYP_PHASE_PROCESS)) - { - /* Process Locked */ - __HAL_LOCK(hcryp); - - inputaddr = (uint32_t)pCypherData; - outputaddr = (uint32_t)pPlainData; - - headersize = hcryp->Init.HeaderSize; - headeraddr = (uint32_t)hcryp->Init.Header; - - hcryp->CrypInCount = Size; - hcryp->pCrypInBuffPtr = pCypherData; - hcryp->pCrypOutBuffPtr = pPlainData; - hcryp->CrypOutCount = Size; - - /* Change the CRYP peripheral state */ - hcryp->State = HAL_CRYP_STATE_BUSY; - - /* Check if initialization phase has already been performed */ - if(hcryp->Phase == HAL_CRYP_PHASE_READY) - { - /************************ Formatting the header block *******************/ - if(headersize != 0) - { - /* Check that the associated data (or header) length is lower than 2^16 - 2^8 = 65536 - 256 = 65280 */ - if(headersize < 65280) - { - hcryp->Init.pScratch[bufferidx++] = (uint8_t) ((headersize >> 8) & 0xFF); - hcryp->Init.pScratch[bufferidx++] = (uint8_t) ((headersize) & 0xFF); - headersize += 2; - } - else - { - /* Header is encoded as 0xff || 0xfe || [headersize]32, i.e., six octets */ - hcryp->Init.pScratch[bufferidx++] = 0xFF; - hcryp->Init.pScratch[bufferidx++] = 0xFE; - hcryp->Init.pScratch[bufferidx++] = headersize & 0xff000000; - hcryp->Init.pScratch[bufferidx++] = headersize & 0x00ff0000; - hcryp->Init.pScratch[bufferidx++] = headersize & 0x0000ff00; - hcryp->Init.pScratch[bufferidx++] = headersize & 0x000000ff; - headersize += 6; - } - /* Copy the header buffer in internal buffer "hcryp->Init.pScratch" */ - for(loopcounter = 0; loopcounter < headersize; loopcounter++) - { - hcryp->Init.pScratch[bufferidx++] = hcryp->Init.Header[loopcounter]; - } - /* Check if the header size is modulo 16 */ - if ((headersize % 16) != 0) - { - /* Padd the header buffer with 0s till the hcryp->Init.pScratch length is modulo 16 */ - for(loopcounter = headersize; loopcounter <= ((headersize/16) + 1) * 16; loopcounter++) - { - hcryp->Init.pScratch[loopcounter] = 0; - } - /* Set the header size to modulo 16 */ - headersize = ((headersize/16) + 1) * 16; - } - /* Set the pointer headeraddr to hcryp->Init.pScratch */ - headeraddr = (uint32_t)hcryp->Init.pScratch; - } - /*********************** Formatting the block B0 ************************/ - if(headersize != 0) - { - blockb0[0] = 0x40; - } - /* Flags byte */ - /* blockb0[0] |= 0u | (((( (uint8_t) hcryp->Init.TagSize - 2) / 2) & 0x07 ) << 3 ) | ( ( (uint8_t) (15 - hcryp->Init.IVSize) - 1) & 0x07) */ - blockb0[0] |= (uint8_t)((uint8_t)((uint8_t)(((uint8_t)(hcryp->Init.TagSize - (uint8_t)(2))) >> 1) & (uint8_t)0x07 ) << 3); - blockb0[0] |= (uint8_t)((uint8_t)((uint8_t)((uint8_t)(15) - hcryp->Init.IVSize) - (uint8_t)1) & (uint8_t)0x07); - - for (loopcounter = 0; loopcounter < hcryp->Init.IVSize; loopcounter++) - { - blockb0[loopcounter+1] = hcryp->Init.pInitVect[loopcounter]; - } - for ( ; loopcounter < 13; loopcounter++) - { - blockb0[loopcounter+1] = 0; - } - - blockb0[14] = (Size >> 8); - blockb0[15] = (Size & 0xFF); - - /************************* Formatting the initial counter ***************/ - /* Byte 0: - Bits 7 and 6 are reserved and shall be set to 0 - Bits 3, 4, and 5 shall also be set to 0, to ensure that all the counter - blocks are distinct from B0 - Bits 0, 1, and 2 contain the same encoding of q as in B0 - */ - ctr[0] = blockb0[0] & 0x07; - /* byte 1 to NonceSize is the IV (Nonce) */ - for(loopcounter = 1; loopcounter < hcryp->Init.IVSize + 1; loopcounter++) - { - ctr[loopcounter] = blockb0[loopcounter]; - } - /* Set the LSB to 1 */ - ctr[15] |= 0x01; - - /* Set the key */ - CRYPEx_GCMCCM_SetKey(hcryp, hcryp->Init.pKey, hcryp->Init.KeySize); - - /* Set the CRYP peripheral in AES CCM mode */ - __HAL_CRYP_SET_MODE(CRYP_CR_ALGOMODE_AES_CCM_DECRYPT); - - /* Set the Initialization Vector */ - CRYPEx_GCMCCM_SetInitVector(hcryp, ctr, CRYP_KEYSIZE_128B); - - /* Select init phase */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_INIT); - - b0addr = (uint32_t)blockb0; - /* Write the blockb0 block in the IN FIFO */ - CRYP->DR = *(uint32_t*)(b0addr); - b0addr+=4; - CRYP->DR = *(uint32_t*)(b0addr); - b0addr+=4; - CRYP->DR = *(uint32_t*)(b0addr); - b0addr+=4; - CRYP->DR = *(uint32_t*)(b0addr); - - /* Enable the CRYP peripheral */ - __HAL_CRYP_ENABLE(); - - /* Get tick */ - tickstart = HAL_GetTick(); - - while((CRYP->CR & CRYP_CR_CRYPEN) == CRYP_CR_CRYPEN) - { - /* Check for the Timeout */ - - if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - - } - } - /***************************** Header phase *****************************/ - if(headersize != 0) - { - /* Select header phase */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_HEADER); - - /* Enable Crypto processor */ - __HAL_CRYP_ENABLE(); - - for(loopcounter = 0; (loopcounter < headersize); loopcounter+=16) - { - /* Get tick */ - tickstart = HAL_GetTick(); - - while(HAL_IS_BIT_CLR(CRYP->SR, CRYP_FLAG_IFEM)) - { - /* Check for the Timeout */ - if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - /* Write the header block in the IN FIFO */ - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - } - - /* Get tick */ - tickstart = HAL_GetTick(); - - while((CRYP->SR & CRYP_FLAG_BUSY) == CRYP_FLAG_BUSY) - { - /* Check for the Timeout */ - if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - } - /* Save formatted counter into the scratch buffer pScratch */ - for(loopcounter = 0; (loopcounter < 16); loopcounter++) - { - hcryp->Init.pScratch[loopcounter] = ctr[loopcounter]; - } - /* Reset bit 0 */ - hcryp->Init.pScratch[15] &= 0xfe; - /* Select payload phase once the header phase is performed */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_PAYLOAD); - - /* Flush FIFO */ - __HAL_CRYP_FIFO_FLUSH(); - - /* Set the phase */ - hcryp->Phase = HAL_CRYP_PHASE_PROCESS; - } - /* Set the input and output addresses and start DMA transfer */ - CRYPEx_GCMCCM_SetDMAConfig(hcryp, inputaddr, Size, outputaddr); - - /* Unlock process */ - __HAL_UNLOCK(hcryp); - - /* Return function status */ - return HAL_OK; - } - else - { - return HAL_ERROR; - } -} - -/** - * @brief This function handles CRYP interrupt request. - * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains - * the configuration information for CRYP module - * @retval None - */ -void HAL_CRYPEx_GCMCCM_IRQHandler(CRYP_HandleTypeDef *hcryp) -{ - switch(CRYP->CR & CRYP_CR_ALGOMODE_DIRECTION) - { - case CRYP_CR_ALGOMODE_AES_GCM_ENCRYPT: - HAL_CRYPEx_AESGCM_Encrypt_IT(hcryp, NULL, 0, NULL); - break; - - case CRYP_CR_ALGOMODE_AES_GCM_DECRYPT: - HAL_CRYPEx_AESGCM_Decrypt_IT(hcryp, NULL, 0, NULL); - break; - - case CRYP_CR_ALGOMODE_AES_CCM_ENCRYPT: - HAL_CRYPEx_AESCCM_Encrypt_IT(hcryp, NULL, 0, NULL); - break; - - case CRYP_CR_ALGOMODE_AES_CCM_DECRYPT: - HAL_CRYPEx_AESCCM_Decrypt_IT(hcryp, NULL, 0, NULL); - break; - - default: - break; - } -} - -/** - * @} - */ - -/** - * @brief DMA CRYP Input Data process complete callback. - * @param hdma: DMA handle - * @retval None - */ -static void CRYPEx_GCMCCM_DMAInCplt(DMA_HandleTypeDef *hdma) -{ - CRYP_HandleTypeDef* hcryp = ( CRYP_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; - - /* Disable the DMA transfer for input Fifo request by resetting the DIEN bit - in the DMACR register */ - CRYP->DMACR &= (uint32_t)(~CRYP_DMACR_DIEN); - - /* Call input data transfer complete callback */ - HAL_CRYP_InCpltCallback(hcryp); -} - -/** - * @brief DMA CRYP Output Data process complete callback. - * @param hdma: DMA handle - * @retval None - */ -static void CRYPEx_GCMCCM_DMAOutCplt(DMA_HandleTypeDef *hdma) -{ - CRYP_HandleTypeDef* hcryp = ( CRYP_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; - - /* Disable the DMA transfer for output Fifo request by resetting the DOEN bit - in the DMACR register */ - CRYP->DMACR &= (uint32_t)(~CRYP_DMACR_DOEN); - - /* Enable the CRYP peripheral */ - __HAL_CRYP_DISABLE(); - - /* Change the CRYP peripheral state */ - hcryp->State = HAL_CRYP_STATE_READY; - - /* Call output data transfer complete callback */ - HAL_CRYP_OutCpltCallback(hcryp); -} - -/** - * @brief DMA CRYP communication error callback. - * @param hdma: DMA handle - * @retval None - */ -static void CRYPEx_GCMCCM_DMAError(DMA_HandleTypeDef *hdma) -{ - CRYP_HandleTypeDef* hcryp = ( CRYP_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; - hcryp->State= HAL_CRYP_STATE_READY; - HAL_CRYP_ErrorCallback(hcryp); -} - -/** - * @brief Writes the Key in Key registers. - * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains - * the configuration information for CRYP module - * @param Key: Pointer to Key buffer - * @param KeySize: Size of Key - * @retval None - */ -static void CRYPEx_GCMCCM_SetKey(CRYP_HandleTypeDef *hcryp, uint8_t *Key, uint32_t KeySize) -{ - uint32_t keyaddr = (uint32_t)Key; - - switch(KeySize) - { - case CRYP_KEYSIZE_256B: - /* Key Initialisation */ - CRYP->K0LR = __REV(*(uint32_t*)(keyaddr)); - keyaddr+=4; - CRYP->K0RR = __REV(*(uint32_t*)(keyaddr)); - keyaddr+=4; - CRYP->K1LR = __REV(*(uint32_t*)(keyaddr)); - keyaddr+=4; - CRYP->K1RR = __REV(*(uint32_t*)(keyaddr)); - keyaddr+=4; - CRYP->K2LR = __REV(*(uint32_t*)(keyaddr)); - keyaddr+=4; - CRYP->K2RR = __REV(*(uint32_t*)(keyaddr)); - keyaddr+=4; - CRYP->K3LR = __REV(*(uint32_t*)(keyaddr)); - keyaddr+=4; - CRYP->K3RR = __REV(*(uint32_t*)(keyaddr)); - break; - case CRYP_KEYSIZE_192B: - CRYP->K1LR = __REV(*(uint32_t*)(keyaddr)); - keyaddr+=4; - CRYP->K1RR = __REV(*(uint32_t*)(keyaddr)); - keyaddr+=4; - CRYP->K2LR = __REV(*(uint32_t*)(keyaddr)); - keyaddr+=4; - CRYP->K2RR = __REV(*(uint32_t*)(keyaddr)); - keyaddr+=4; - CRYP->K3LR = __REV(*(uint32_t*)(keyaddr)); - keyaddr+=4; - CRYP->K3RR = __REV(*(uint32_t*)(keyaddr)); - break; - case CRYP_KEYSIZE_128B: - CRYP->K2LR = __REV(*(uint32_t*)(keyaddr)); - keyaddr+=4; - CRYP->K2RR = __REV(*(uint32_t*)(keyaddr)); - keyaddr+=4; - CRYP->K3LR = __REV(*(uint32_t*)(keyaddr)); - keyaddr+=4; - CRYP->K3RR = __REV(*(uint32_t*)(keyaddr)); - break; - default: - break; - } -} - -/** - * @brief Writes the InitVector/InitCounter in IV registers. - * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains - * the configuration information for CRYP module - * @param InitVector: Pointer to InitVector/InitCounter buffer - * @param IVSize: Size of the InitVector/InitCounter - * @retval None - */ -static void CRYPEx_GCMCCM_SetInitVector(CRYP_HandleTypeDef *hcryp, uint8_t *InitVector, uint32_t IVSize) -{ - uint32_t ivaddr = (uint32_t)InitVector; - - switch(IVSize) - { - case CRYP_KEYSIZE_128B: - CRYP->IV0LR = __REV(*(uint32_t*)(ivaddr)); - ivaddr+=4; - CRYP->IV0RR = __REV(*(uint32_t*)(ivaddr)); - ivaddr+=4; - CRYP->IV1LR = __REV(*(uint32_t*)(ivaddr)); - ivaddr+=4; - CRYP->IV1RR = __REV(*(uint32_t*)(ivaddr)); - break; - /* Whatever key size 192 or 256, Init vector is written in IV0LR and IV0RR */ - case CRYP_KEYSIZE_192B: - CRYP->IV0LR = __REV(*(uint32_t*)(ivaddr)); - ivaddr+=4; - CRYP->IV0RR = __REV(*(uint32_t*)(ivaddr)); - break; - case CRYP_KEYSIZE_256B: - CRYP->IV0LR = __REV(*(uint32_t*)(ivaddr)); - ivaddr+=4; - CRYP->IV0RR = __REV(*(uint32_t*)(ivaddr)); - break; - default: - break; - } -} - -/** - * @brief Process Data: Writes Input data in polling mode and read the Output data. - * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains - * the configuration information for CRYP module - * @param Input: Pointer to the Input buffer. - * @param Ilength: Length of the Input buffer, must be a multiple of 16 - * @param Output: Pointer to the returned buffer - * @param Timeout: Timeout value - * @retval None - */ -static HAL_StatusTypeDef CRYPEx_GCMCCM_ProcessData(CRYP_HandleTypeDef *hcryp, uint8_t *Input, uint16_t Ilength, uint8_t *Output, uint32_t Timeout) -{ - uint32_t tickstart = 0; - uint32_t i = 0; - uint32_t inputaddr = (uint32_t)Input; - uint32_t outputaddr = (uint32_t)Output; - - for(i=0; (i < Ilength); i+=16) - { - /* Write the Input block in the IN FIFO */ - CRYP->DR = *(uint32_t*)(inputaddr); - inputaddr+=4; - CRYP->DR = *(uint32_t*)(inputaddr); - inputaddr+=4; - CRYP->DR = *(uint32_t*)(inputaddr); - inputaddr+=4; - CRYP->DR = *(uint32_t*)(inputaddr); - inputaddr+=4; - - /* Get tick */ - tickstart = HAL_GetTick(); - - while(HAL_IS_BIT_CLR(CRYP->SR, CRYP_FLAG_OFNE)) - { - /* Check for the Timeout */ - if(Timeout != HAL_MAX_DELAY) - { - if((HAL_GetTick() - tickstart ) > CRYPEx_TIMEOUT_VALUE) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - } - /* Read the Output block from the OUT FIFO */ - *(uint32_t*)(outputaddr) = CRYP->DOUT; - outputaddr+=4; - *(uint32_t*)(outputaddr) = CRYP->DOUT; - outputaddr+=4; - *(uint32_t*)(outputaddr) = CRYP->DOUT; - outputaddr+=4; - *(uint32_t*)(outputaddr) = CRYP->DOUT; - outputaddr+=4; - } - /* Return function status */ - return HAL_OK; -} - -/** - * @brief Sets the header phase - * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains - * the configuration information for CRYP module - * @param Input: Pointer to the Input buffer. - * @param Ilength: Length of the Input buffer, must be a multiple of 16 - * @param Timeout: Timeout value - * @retval None - */ -static HAL_StatusTypeDef CRYPEx_GCMCCM_SetHeaderPhase(CRYP_HandleTypeDef *hcryp, uint8_t* Input, uint16_t Ilength, uint32_t Timeout) -{ - uint32_t tickstart = 0; - uint32_t loopcounter = 0; - uint32_t headeraddr = (uint32_t)Input; - - /***************************** Header phase *********************************/ - if(hcryp->Init.HeaderSize != 0) - { - /* Select header phase */ - __HAL_CRYP_SET_PHASE(CRYP_PHASE_HEADER); - /* Enable the CRYP peripheral */ - __HAL_CRYP_ENABLE(); - - for(loopcounter = 0; (loopcounter < hcryp->Init.HeaderSize); loopcounter+=16) - { - /* Get tick */ - tickstart = HAL_GetTick(); - - while(HAL_IS_BIT_CLR(CRYP->SR, CRYP_FLAG_IFEM)) - { - /* Check for the Timeout */ - if(Timeout != HAL_MAX_DELAY) - { - if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - } - /* Write the Input block in the IN FIFO */ - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - CRYP->DR = *(uint32_t*)(headeraddr); - headeraddr+=4; - } - - /* Wait until the complete message has been processed */ - - /* Get tick */ - tickstart = HAL_GetTick(); - - while((CRYP->SR & CRYP_FLAG_BUSY) == CRYP_FLAG_BUSY) - { - /* Check for the Timeout */ - if(Timeout != HAL_MAX_DELAY) - { - if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) - { - /* Change state */ - hcryp->State = HAL_CRYP_STATE_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hcryp); - - return HAL_TIMEOUT; - } - } - } - } - /* Return function status */ - return HAL_OK; -} - -/** - * @brief Sets the DMA configuration and start the DMA transfert. - * @param hcryp: pointer to a CRYP_HandleTypeDef structure that contains - * the configuration information for CRYP module - * @param inputaddr: Address of the Input buffer - * @param Size: Size of the Input buffer, must be a multiple of 16 - * @param outputaddr: Address of the Output buffer - * @retval None - */ -static void CRYPEx_GCMCCM_SetDMAConfig(CRYP_HandleTypeDef *hcryp, uint32_t inputaddr, uint16_t Size, uint32_t outputaddr) -{ - /* Set the CRYP DMA transfer complete callback */ - hcryp->hdmain->XferCpltCallback = CRYPEx_GCMCCM_DMAInCplt; - /* Set the DMA error callback */ - hcryp->hdmain->XferErrorCallback = CRYPEx_GCMCCM_DMAError; - - /* Set the CRYP DMA transfer complete callback */ - hcryp->hdmaout->XferCpltCallback = CRYPEx_GCMCCM_DMAOutCplt; - /* Set the DMA error callback */ - hcryp->hdmaout->XferErrorCallback = CRYPEx_GCMCCM_DMAError; - - /* Enable the CRYP peripheral */ - __HAL_CRYP_ENABLE(); - - /* Enable the DMA In DMA Stream */ - HAL_DMA_Start_IT(hcryp->hdmain, inputaddr, (uint32_t)&CRYP->DR, Size/4); - - /* Enable In DMA request */ - CRYP->DMACR = CRYP_DMACR_DIEN; - - /* Enable the DMA Out DMA Stream */ - HAL_DMA_Start_IT(hcryp->hdmaout, (uint32_t)&CRYP->DOUT, outputaddr, Size/4); - - /* Enable Out DMA request */ - CRYP->DMACR |= CRYP_DMACR_DOEN; -} - -/** - * @} - */ -#endif /* STM32F437xx || STM32F439xx */ - -#endif /* HAL_CRYP_MODULE_ENABLED */ -/** - * @} - */ - -/** - * @} - */ - -/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/