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GasFlowMeter/Libraries/STM32H7xx_HAL_Driver/Src/stm32h7xx_hal_cryp_ex.c

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/**
******************************************************************************
* @file stm32h7xx_hal_cryp_ex.c
* @author MCD Application Team
* @version V1.2.0
* @date 29-December-2017
* @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 after AES-GCM or AES-CCM
Encryption/Decryption to get the authentication messages.
@endverbatim
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2017 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 "stm32h7xx_hal.h"
/** @addtogroup STM32H7xx_HAL_Driver
* @{
*/
#if defined (CRYP)
/** @defgroup CRYPEx CRYPEx
* @brief CRYP Extension HAL module driver.
* @{
*/
#ifdef HAL_CRYP_MODULE_ENABLED
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/** @addtogroup CRYPEx_Private_Defines
* @{
*/
#define CRYP_PHASE_INIT 0x00000000U
#define CRYP_PHASE_HEADER CRYP_CR_GCM_CCMPH_0
#define CRYP_PHASE_PAYLOAD CRYP_CR_GCM_CCMPH_1
#define CRYP_PHASE_FINAL CRYP_CR_GCM_CCMPH
#define CRYP_OPERATINGMODE_ENCRYPT 0x00000000U
#define CRYP_OPERATINGMODE_DECRYPT CRYP_CR_ALGODIR
#define CRYPEx_PHASE_PROCESS 0x02U /*!< CRYP peripheral is in processing phase */
#define CRYPEx_PHASE_FINAL 0x03U /*!< CRYP peripheral is in final phase this is relevant only with CCM and GCM modes */
/* CTR0 information to use in CCM algorithm */
#define CRYP_CCM_CTR0_0 0x07FFFFFFU
#define CRYP_CCM_CTR0_3 0xFFFFFF00U
/**
* @}
*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions---------------------------------------------------------*/
/** @addtogroup CRYPEx_Exported_Functions
* @{
*/
/** @defgroup CRYPEx_Exported_Functions_Group1 Extended AES processing functions
* @brief CRYPEx Extended processing functions.
*
@verbatim
==============================================================================
##### Extended AES processing functions #####
==============================================================================
[..] This section provides functions allowing to generate the authentication
TAG in Polling mode
(+)HAL_CRYPEx_AESGCM_GenerateAuthTAG
(+)HAL_CRYPEx_AESCCM_GenerateAuthTAG
they should be used after Encrypt/Decrypt operation.
@endverbatim
* @{
*/
/**
* @brief generate the GCM authentication TAG.
* @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_AESGCM_GenerateAuthTAG(CRYP_HandleTypeDef *hcryp, uint32_t *AuthTag, uint32_t Timeout)
{
uint32_t tickstart = 0U;
uint64_t headerlength = hcryp->Init.HeaderSize * 32U; /* Header length in bits */
uint64_t inputlength = (hcryp->Size) * 32U; /* input length in bits */
uint32_t tagaddr = (uint32_t)AuthTag;
if(hcryp->State == HAL_CRYP_STATE_READY)
{
/* 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 == CRYPEx_PHASE_PROCESS)
{
/* Change the CRYP phase */
hcryp->Phase = CRYPEx_PHASE_FINAL;
}
else /* Initialization phase has not been performed*/
{
/* Disable the Peripheral */
__HAL_CRYP_DISABLE(hcryp);
/* Sequence error code field */
hcryp->ErrorCode |= HAL_CRYP_ERROR_AUTH_TAG_SEQUENCE;
/* Change the CRYP peripheral state */
hcryp->State = HAL_CRYP_STATE_READY;
/* Process unlocked */
__HAL_UNLOCK(hcryp);
return HAL_ERROR;
}
/* Disable CRYP to start the final phase */
__HAL_CRYP_DISABLE(hcryp);
/* Select final phase */
MODIFY_REG(hcryp->Instance->CR, CRYP_CR_GCM_CCMPH, CRYP_PHASE_FINAL);
/*ALGODIR bit must be set to <20>0<EFBFBD>.*/
hcryp->Instance->CR &= ~CRYP_CR_ALGODIR;
/* Enable the CRYP peripheral */
__HAL_CRYP_ENABLE(hcryp);
/* 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)
{
hcryp->Instance->DIN = 0U;
hcryp->Instance->DIN = __RBIT((uint32_t)(headerlength));
hcryp->Instance->DIN = 0U;
hcryp->Instance->DIN = __RBIT((uint32_t)(inputlength));
}
else if(hcryp->Init.DataType == CRYP_DATATYPE_8B)
{
hcryp->Instance->DIN = 0U;
hcryp->Instance->DIN = __REV((uint32_t)(headerlength));
hcryp->Instance->DIN = 0U;
hcryp->Instance->DIN = __REV((uint32_t)(inputlength));
}
else if(hcryp->Init.DataType == CRYP_DATATYPE_16B)
{
hcryp->Instance->DIN = 0U;
hcryp->Instance->DIN = __ROR((uint32_t)headerlength, 16U);
hcryp->Instance->DIN = 0U;
hcryp->Instance->DIN = __ROR((uint32_t)inputlength, 16U);
}
else if(hcryp->Init.DataType == CRYP_DATATYPE_32B)
{
hcryp->Instance->DIN = 0U;
hcryp->Instance->DIN = (uint32_t)(headerlength);
hcryp->Instance->DIN = 0U;
hcryp->Instance->DIN = (uint32_t)(inputlength);
}
/* Wait for OFNE flag to be raised */
tickstart = HAL_GetTick();
while(HAL_IS_BIT_CLR(hcryp->Instance->SR, CRYP_FLAG_OFNE))
{
/* Check for the Timeout */
if(Timeout != HAL_MAX_DELAY)
{
if((Timeout == 0U)||((HAL_GetTick() - tickstart ) > Timeout))
{
/* Disable the CRYP Peripheral Clock */
__HAL_CRYP_DISABLE(hcryp);
/* Change state */
hcryp->ErrorCode |= HAL_CRYP_ERROR_TIMEOUT;
hcryp->State = HAL_CRYP_STATE_READY;
/* Process unlocked */
__HAL_UNLOCK(hcryp);
return HAL_ERROR;
}
}
}
/* Read the authentication TAG in the output FIFO */
*(uint32_t*)(tagaddr) = hcryp->Instance->DOUT;
tagaddr+=4U;
*(uint32_t*)(tagaddr) = hcryp->Instance->DOUT;
tagaddr+=4U;
*(uint32_t*)(tagaddr) = hcryp->Instance->DOUT;
tagaddr+=4U;
*(uint32_t*)(tagaddr) = hcryp->Instance->DOUT;
/* Disable the peripheral */
__HAL_CRYP_DISABLE(hcryp);
/* Change the CRYP peripheral state */
hcryp->State = HAL_CRYP_STATE_READY;
/* Process unlocked */
__HAL_UNLOCK(hcryp);
}
else
{
/* Busy error code field */
hcryp->ErrorCode |= HAL_CRYP_ERROR_BUSY;
return HAL_ERROR;
}
/* Return function status */
return HAL_OK;
}
/**
* @brief AES CCM Authentication TAG generation.
* @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_GenerateAuthTAG(CRYP_HandleTypeDef *hcryp, uint32_t *AuthTag, uint32_t Timeout)
{
uint32_t tagaddr = (uint32_t)AuthTag;
uint32_t ctr0 [4]={0};
uint32_t ctr0addr = (uint32_t)ctr0;
uint32_t tickstart = 0U;
if(hcryp->State == HAL_CRYP_STATE_READY)
{
/* 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 == CRYPEx_PHASE_PROCESS)
{
/* Change the CRYP phase */
hcryp->Phase = CRYPEx_PHASE_FINAL;
}
else /* Initialization phase has not been performed*/
{
/* Disable the peripheral */
__HAL_CRYP_DISABLE(hcryp);
/* Sequence error code field */
hcryp->ErrorCode |= HAL_CRYP_ERROR_AUTH_TAG_SEQUENCE;
/* Change the CRYP peripheral state */
hcryp->State = HAL_CRYP_STATE_READY;
/* Process unlocked */
__HAL_UNLOCK(hcryp);
return HAL_ERROR;
}
/* Disable CRYP to start the final phase */
__HAL_CRYP_DISABLE(hcryp);
/* Select final phase & ALGODIR bit must be set to <20>0<EFBFBD>. */
MODIFY_REG(hcryp->Instance->CR, CRYP_CR_GCM_CCMPH|CRYP_CR_ALGODIR, CRYP_PHASE_FINAL|CRYP_OPERATINGMODE_ENCRYPT);
/* Enable the CRYP peripheral */
__HAL_CRYP_ENABLE(hcryp);
/* Write the counter block in the IN FIFO, CTR0 information from B0
data has to be swapped according to the DATATYPE*/
ctr0[0]=(hcryp->Init.B0[0]) & CRYP_CCM_CTR0_0;
ctr0[1]=hcryp->Init.B0[1];
ctr0[2]=hcryp->Init.B0[2];
ctr0[3]=hcryp->Init.B0[3] & CRYP_CCM_CTR0_3;
if(hcryp->Init.DataType == CRYP_DATATYPE_8B)
{
hcryp->Instance->DIN = __REV(*(uint32_t*)(ctr0addr));
ctr0addr+=4;
hcryp->Instance->DIN = __REV(*(uint32_t*)(ctr0addr));
ctr0addr+=4;
hcryp->Instance->DIN = __REV(*(uint32_t*)(ctr0addr));
ctr0addr+=4;
hcryp->Instance->DIN = __REV(*(uint32_t*)(ctr0addr));
}
else if(hcryp->Init.DataType == CRYP_DATATYPE_16B)
{
hcryp->Instance->DIN = __ROR(*(uint32_t*)(ctr0addr), 16U);
ctr0addr+=4;
hcryp->Instance->DIN = __ROR(*(uint32_t*)(ctr0addr), 16U);
ctr0addr+=4;
hcryp->Instance->DIN = __ROR(*(uint32_t*)(ctr0addr), 16U);
ctr0addr+=4;
hcryp->Instance->DIN = __ROR(*(uint32_t*)(ctr0addr), 16U);
}
else if(hcryp->Init.DataType == CRYP_DATATYPE_1B)
{
hcryp->Instance->DIN = __RBIT(*(uint32_t*)(ctr0addr));
ctr0addr+=4;
hcryp->Instance->DIN = __RBIT(*(uint32_t*)(ctr0addr));
ctr0addr+=4;
hcryp->Instance->DIN = __RBIT(*(uint32_t*)(ctr0addr));
ctr0addr+=4;
hcryp->Instance->DIN = __RBIT(*(uint32_t*)(ctr0addr));
}
else
{
hcryp->Instance->DIN = *(uint32_t*)(ctr0addr);
ctr0addr+=4;
hcryp->Instance->DIN = *(uint32_t*)(ctr0addr);
ctr0addr+=4;
hcryp->Instance->DIN = *(uint32_t*)(ctr0addr);
ctr0addr+=4;
hcryp->Instance->DIN = *(uint32_t*)(ctr0addr);;
}
/* Wait for OFNE flag to be raised */
tickstart = HAL_GetTick();
while(HAL_IS_BIT_CLR(hcryp->Instance->SR, CRYP_FLAG_OFNE))
{
/* Check for the Timeout */
if(Timeout != HAL_MAX_DELAY)
{
if((Timeout == 0U)||((HAL_GetTick() - tickstart ) > Timeout))
{
/* Disable the CRYP peripheral Clock */
__HAL_CRYP_DISABLE(hcryp);
/* Change state */
hcryp->ErrorCode |= HAL_CRYP_ERROR_TIMEOUT;
hcryp->State = HAL_CRYP_STATE_READY;
/* Process unlocked */
__HAL_UNLOCK(hcryp);
return HAL_ERROR;
}
}
}
/* Read the Auth TAG in the IN FIFO */
*(uint32_t*)(tagaddr) = hcryp->Instance->DOUT;
tagaddr+=4U;
*(uint32_t*)(tagaddr) = hcryp->Instance->DOUT;
tagaddr+=4U;
*(uint32_t*)(tagaddr) = hcryp->Instance->DOUT;
tagaddr+=4U;
*(uint32_t*)(tagaddr) = hcryp->Instance->DOUT;
/* Change the CRYP peripheral state */
hcryp->State = HAL_CRYP_STATE_READY;
/* Process unlocked */
__HAL_UNLOCK(hcryp);
/* Disable CRYP */
__HAL_CRYP_DISABLE(hcryp);
}
else
{
/* Busy error code field */
hcryp->ErrorCode = HAL_CRYP_ERROR_BUSY;
return HAL_ERROR;
}
/* Return function status */
return HAL_OK;
}
/**
* @}
*/
#endif /* HAL_CRYP_MODULE_ENABLED */
/**
* @}
*/
#endif /* CRYP*/
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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