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/**
******************************************************************************
* @file stm32f4xx_hal_cryp_ex.c
* @author MCD Application Team
* @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:
(#)After AES-GCM or AES-CCM Encryption/Decryption user can start following API
to get the authentication messages :
(##) HAL_CRYPEx_AESGCM_GenerateAuthTAG
(##) HAL_CRYPEx_AESCCM_GenerateAuthTAG
@endverbatim
******************************************************************************
* @attention
*
* <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under BSD 3-Clause license,
* the "License"; You may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
* opensource.org/licenses/BSD-3-Clause
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx_hal.h"
/** @addtogroup STM32F4xx_HAL_Driver
* @{
*/
#if defined (AES) || defined (CRYP)
#if defined (CRYP_CR_ALGOMODE_AES_GCM)|| defined (AES)
/** @defgroup CRYPEx CRYPEx
* @brief CRYP Extension HAL module driver.
* @{
*/
#ifdef HAL_CRYP_MODULE_ENABLED
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/** @addtogroup CRYPEx_Private_Defines
* @{
*/
#if defined(AES)
#define CRYP_PHASE_INIT 0x00000000U /*!< GCM/GMAC (or CCM) init phase */
#define CRYP_PHASE_HEADER AES_CR_GCMPH_0 /*!< GCM/GMAC or CCM header phase */
#define CRYP_PHASE_PAYLOAD AES_CR_GCMPH_1 /*!< GCM(/CCM) payload phase */
#define CRYP_PHASE_FINAL AES_CR_GCMPH /*!< GCM/GMAC or CCM final phase */
#define CRYP_OPERATINGMODE_ENCRYPT 0x00000000U /*!< Encryption mode */
#define CRYP_OPERATINGMODE_KEYDERIVATION AES_CR_MODE_0 /*!< Key derivation mode only used when performing ECB and CBC decryptions */
#define CRYP_OPERATINGMODE_DECRYPT AES_CR_MODE_1 /*!< Decryption */
#define CRYP_OPERATINGMODE_KEYDERIVATION_DECRYPT AES_CR_MODE /*!< Key derivation and decryption only used when performing ECB and CBC decryptions */
#else /* CRYP */
#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
#endif /* End AES or CRYP */
#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 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;
/* Assume first Init.HeaderSize is in words */
uint64_t headerlength = (uint64_t)(hcryp->Init.HeaderSize) * 32U; /* Header length in bits */
uint64_t inputlength = (uint64_t)hcryp->SizesSum * 8U; /* Input length in bits */
uint32_t tagaddr = (uint32_t)AuthTag;
/* Correct headerlength if Init.HeaderSize is actually in bytes */
if (hcryp->Init.HeaderWidthUnit == CRYP_HEADERWIDTHUNIT_BYTE)
{
headerlength /= 4U;
}
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;
}
#if defined(CRYP)
/* 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 ‘0’.*/
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);
}
else
{
/* Nothing to do */
}
/* 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 (((HAL_GetTick() - tickstart) > Timeout) || (Timeout == 0U))
{
/* 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;
#else /* AES*/
/* Select final phase */
MODIFY_REG(hcryp->Instance->CR, AES_CR_GCMPH, CRYP_PHASE_FINAL);
/* 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->DINR = 0U;
hcryp->Instance->DINR = __RBIT((uint32_t)(headerlength));
hcryp->Instance->DINR = 0U;
hcryp->Instance->DINR = __RBIT((uint32_t)(inputlength));
}
else if (hcryp->Init.DataType == CRYP_DATATYPE_8B)
{
hcryp->Instance->DINR = 0U;
hcryp->Instance->DINR = __REV((uint32_t)(headerlength));
hcryp->Instance->DINR = 0U;
hcryp->Instance->DINR = __REV((uint32_t)(inputlength));
}
else if (hcryp->Init.DataType == CRYP_DATATYPE_16B)
{
hcryp->Instance->DINR = 0U;
hcryp->Instance->DINR = __ROR((uint32_t)headerlength, 16U);
hcryp->Instance->DINR = 0U;
hcryp->Instance->DINR = __ROR((uint32_t)inputlength, 16U);
}
else if (hcryp->Init.DataType == CRYP_DATATYPE_32B)
{
hcryp->Instance->DINR = 0U;
hcryp->Instance->DINR = (uint32_t)(headerlength);
hcryp->Instance->DINR = 0U;
hcryp->Instance->DINR = (uint32_t)(inputlength);
}
else
{
/* Nothing to do */
}
/* Wait for CCF flag to be raised */
tickstart = HAL_GetTick();
while (HAL_IS_BIT_CLR(hcryp->Instance->SR, AES_SR_CCF))
{
/* Check for the Timeout */
if (Timeout != HAL_MAX_DELAY)
{
if (((HAL_GetTick() - tickstart) > Timeout) || (Timeout == 0U))
{
/* 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->DOUTR;
tagaddr += 4U;
*(uint32_t *)(tagaddr) = hcryp->Instance->DOUTR;
tagaddr += 4U;
*(uint32_t *)(tagaddr) = hcryp->Instance->DOUTR;
tagaddr += 4U;
*(uint32_t *)(tagaddr) = hcryp->Instance->DOUTR;
/* Clear CCF flag */
__HAL_CRYP_CLEAR_FLAG(hcryp, CRYP_CCF_CLEAR);
#endif /* End AES or CRYP */
/* 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;
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;
}
#if defined(CRYP)
/* Disable CRYP to start the final phase */
__HAL_CRYP_DISABLE(hcryp);
/* Select final phase & ALGODIR bit must be set to ‘0’. */
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 += 4U;
hcryp->Instance->DIN = __REV(*(uint32_t *)(ctr0addr));
ctr0addr += 4U;
hcryp->Instance->DIN = __REV(*(uint32_t *)(ctr0addr));
ctr0addr += 4U;
hcryp->Instance->DIN = __REV(*(uint32_t *)(ctr0addr));
}
else if (hcryp->Init.DataType == CRYP_DATATYPE_16B)
{
hcryp->Instance->DIN = __ROR(*(uint32_t *)(ctr0addr), 16U);
ctr0addr += 4U;
hcryp->Instance->DIN = __ROR(*(uint32_t *)(ctr0addr), 16U);
ctr0addr += 4U;
hcryp->Instance->DIN = __ROR(*(uint32_t *)(ctr0addr), 16U);
ctr0addr += 4U;
hcryp->Instance->DIN = __ROR(*(uint32_t *)(ctr0addr), 16U);
}
else if (hcryp->Init.DataType == CRYP_DATATYPE_1B)
{
hcryp->Instance->DIN = __RBIT(*(uint32_t *)(ctr0addr));
ctr0addr += 4U;
hcryp->Instance->DIN = __RBIT(*(uint32_t *)(ctr0addr));
ctr0addr += 4U;
hcryp->Instance->DIN = __RBIT(*(uint32_t *)(ctr0addr));
ctr0addr += 4U;
hcryp->Instance->DIN = __RBIT(*(uint32_t *)(ctr0addr));
}
else
{
hcryp->Instance->DIN = *(uint32_t *)(ctr0addr);
ctr0addr += 4U;
hcryp->Instance->DIN = *(uint32_t *)(ctr0addr);
ctr0addr += 4U;
hcryp->Instance->DIN = *(uint32_t *)(ctr0addr);
ctr0addr += 4U;
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 (((HAL_GetTick() - tickstart) > Timeout) || (Timeout == 0U))
{
/* 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;
#else /* AES */
/* Select final phase */
MODIFY_REG(hcryp->Instance->CR, AES_CR_GCMPH, CRYP_PHASE_FINAL);
/* Write the counter block in the IN FIFO, CTR0 information from B0
data has to be swapped according to the DATATYPE*/
if (hcryp->Init.DataType == CRYP_DATATYPE_8B)
{
ctr0[0] = (__REV(hcryp->Init.B0[0]) & CRYP_CCM_CTR0_0);
ctr0[1] = __REV(hcryp->Init.B0[1]);
ctr0[2] = __REV(hcryp->Init.B0[2]);
ctr0[3] = (__REV(hcryp->Init.B0[3])& CRYP_CCM_CTR0_3);
hcryp->Instance->DINR = __REV(*(uint32_t *)(ctr0addr));
ctr0addr += 4U;
hcryp->Instance->DINR = __REV(*(uint32_t *)(ctr0addr));
ctr0addr += 4U;
hcryp->Instance->DINR = __REV(*(uint32_t *)(ctr0addr));
ctr0addr += 4U;
hcryp->Instance->DINR = __REV(*(uint32_t *)(ctr0addr));
}
else if (hcryp->Init.DataType == CRYP_DATATYPE_16B)
{
ctr0[0] = (__ROR((hcryp->Init.B0[0]), 16U)& CRYP_CCM_CTR0_0);
ctr0[1] = __ROR((hcryp->Init.B0[1]), 16U);
ctr0[2] = __ROR((hcryp->Init.B0[2]), 16U);
ctr0[3] = (__ROR((hcryp->Init.B0[3]), 16U)& CRYP_CCM_CTR0_3);
hcryp->Instance->DINR = __ROR(*(uint32_t *)(ctr0addr), 16U);
ctr0addr += 4U;
hcryp->Instance->DINR = __ROR(*(uint32_t *)(ctr0addr), 16U);
ctr0addr += 4U;
hcryp->Instance->DINR = __ROR(*(uint32_t *)(ctr0addr), 16U);
ctr0addr += 4U;
hcryp->Instance->DINR = __ROR(*(uint32_t *)(ctr0addr), 16U);
}
else if (hcryp->Init.DataType == CRYP_DATATYPE_1B)
{
ctr0[0] = (__RBIT(hcryp->Init.B0[0])& CRYP_CCM_CTR0_0);
ctr0[1] = __RBIT(hcryp->Init.B0[1]);
ctr0[2] = __RBIT(hcryp->Init.B0[2]);
ctr0[3] = (__RBIT(hcryp->Init.B0[3])& CRYP_CCM_CTR0_3);
hcryp->Instance->DINR = __RBIT(*(uint32_t *)(ctr0addr));
ctr0addr += 4U;
hcryp->Instance->DINR = __RBIT(*(uint32_t *)(ctr0addr));
ctr0addr += 4U;
hcryp->Instance->DINR = __RBIT(*(uint32_t *)(ctr0addr));
ctr0addr += 4U;
hcryp->Instance->DINR = __RBIT(*(uint32_t *)(ctr0addr));
}
else
{
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;
hcryp->Instance->DINR = *(uint32_t *)(ctr0addr);
ctr0addr += 4U;
hcryp->Instance->DINR = *(uint32_t *)(ctr0addr);
ctr0addr += 4U;
hcryp->Instance->DINR = *(uint32_t *)(ctr0addr);
ctr0addr += 4U;
hcryp->Instance->DINR = *(uint32_t *)(ctr0addr);
}
/* Wait for CCF flag to be raised */
tickstart = HAL_GetTick();
while (HAL_IS_BIT_CLR(hcryp->Instance->SR, AES_SR_CCF))
{
/* Check for the Timeout */
if (Timeout != HAL_MAX_DELAY)
{
if (((HAL_GetTick() - tickstart) > Timeout) || (Timeout == 0U))
{
/* 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->DOUTR;
tagaddr += 4U;
*(uint32_t *)(tagaddr) = hcryp->Instance->DOUTR;
tagaddr += 4U;
*(uint32_t *)(tagaddr) = hcryp->Instance->DOUTR;
tagaddr += 4U;
*(uint32_t *)(tagaddr) = hcryp->Instance->DOUTR;
/* Clear CCF Flag */
__HAL_CRYP_CLEAR_FLAG(hcryp, CRYP_CCF_CLEAR);
#endif /* End of AES || CRYP */
/* 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;
}
/**
* @}
*/
#if defined (AES)
/** @defgroup CRYPEx_Exported_Functions_Group2 Key Derivation functions
* @brief AutoKeyDerivation functions
*
@verbatim
==============================================================================
##### Key Derivation functions #####
==============================================================================
[..] This section provides functions allowing to Enable or Disable the
the AutoKeyDerivation parameter in CRYP_HandleTypeDef structure
These function are allowed only in TinyAES IP.
@endverbatim
* @{
*/
/**
* @brief AES enable key derivation functions
* @param hcryp: pointer to a CRYP_HandleTypeDef structure.
* @retval None
*/
void HAL_CRYPEx_EnableAutoKeyDerivation(CRYP_HandleTypeDef *hcryp)
{
if (hcryp->State == HAL_CRYP_STATE_READY)
{
hcryp->AutoKeyDerivation = ENABLE;
}
else
{
/* Busy error code field */
hcryp->ErrorCode = HAL_CRYP_ERROR_BUSY;
}
}
/**
* @brief AES disable key derivation functions
* @param hcryp: pointer to a CRYP_HandleTypeDef structure.
* @retval None
*/
void HAL_CRYPEx_DisableAutoKeyDerivation(CRYP_HandleTypeDef *hcryp)
{
if (hcryp->State == HAL_CRYP_STATE_READY)
{
hcryp->AutoKeyDerivation = DISABLE;
}
else
{
/* Busy error code field */
hcryp->ErrorCode = HAL_CRYP_ERROR_BUSY;
}
}
/**
* @}
*/
#endif /* AES or GCM CCM defined*/
#endif /* AES */
#endif /* HAL_CRYP_MODULE_ENABLED */
/**
* @}
*/
#endif /* TinyAES or CRYP*/
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/