Diff: targets/cmsis/TARGET_STM/TARGET_NUCLEO_L152RE/stm32l1xx_aes_util.c

Revision:

354:e67efb2aab0e

Parent:

353:18a10d3e36f3

Child:

355:fcc1051343cd

--- a/targets/cmsis/TARGET_STM/TARGET_NUCLEO_L152RE/stm32l1xx_aes_util.c	Thu Oct 16 14:45:07 2014 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,689 +0,0 @@
-/**
-  ******************************************************************************
-  * @file    stm32l1xx_aes_util.c
-  * @author  MCD Application Team
-  * @version V1.3.0
-  * @date    31-January-2014
-  * @brief   This file provides high level functions to encrypt and decrypt an 
-  *          input message using AES in ECB/CBC/CTR modes.
-  *
-  *  @verbatim
-
-================================================================================
-                        ##### How to use this driver #####
-================================================================================
-          [..]
-           (#) Enable The AES controller clock using 
-               RCC_AHBPeriphClockCmd(RCC_AHBPeriph_AES, ENABLE); function.
-
-           (#) Use AES_ECB_Encrypt() function to encrypt an input message in ECB mode.
-           (#) Use AES_ECB_Decrypt() function to decrypt an input message in ECB mode.
-
-           (#) Use AES_CBC_Encrypt() function to encrypt an input message in CBC mode.
-           (#) Use AES_CBC_Decrypt() function to decrypt an input message in CBC mode.
-
-           (#) Use AES_CTR_Encrypt() function to encrypt an input message in CTR mode.
-           (#) Use AES_CTR_Decrypt() function to decrypt an input message in CTR mode.
-
-  *  @endverbatim
-  *
-  ******************************************************************************
-  * @attention
-  *
-  * <h2><center>&copy; 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 "stm32l1xx_aes.h"
-
-/** @addtogroup STM32L1xx_StdPeriph_Driver
-  * @{
-  */
-
-/** @addtogroup AES 
-  * @brief AES driver modules
-  * @{
-  */
-
-/* Private typedef -----------------------------------------------------------*/
-/* Private define ------------------------------------------------------------*/
-#define AES_CC_TIMEOUT    ((uint32_t) 0x00010000)
-
-/* Private macro -------------------------------------------------------------*/
-/* Private variables ---------------------------------------------------------*/
-/* Private function prototypes -----------------------------------------------*/
-/* Private functions ---------------------------------------------------------*/
-
-/** @defgroup AES_Private_Functions
-  * @{
-  */ 
-
-/** @defgroup AES_Group6 High Level AES functions
- *  @brief   High Level AES functions 
- *
-@verbatim
-================================================================================
-                         ##### High Level AES functions #####
-================================================================================
-
-@endverbatim
-  * @{
-  */
-
-/**
-  * @brief  Encrypt using AES in ECB Mode
-  * @param  Key: Key used for AES algorithm.
-  * @param  Input: pointer to the Input buffer.
-  * @param  Ilength: length of the Input buffer, must be a multiple of 16 bytes.
-  * @param  Output: pointer to the returned buffer.
-  * @retval An ErrorStatus enumeration value:
-  *          - SUCCESS: Operation done
-  *          - ERROR: Operation failed
-  */
-ErrorStatus AES_ECB_Encrypt(uint8_t* Key, uint8_t* Input, uint32_t Ilength, uint8_t* Output)
-{
-  AES_InitTypeDef AES_InitStructure;
-  AES_KeyInitTypeDef  AES_KeyInitStructure;
-  ErrorStatus status = SUCCESS;
-  uint32_t keyaddr    = (uint32_t)Key;
-  uint32_t inputaddr  = (uint32_t)Input;
-  uint32_t outputaddr = (uint32_t)Output;
-  __IO uint32_t counter = 0;
-  uint32_t ccstatus = 0;
-  uint32_t i = 0;
-
-  /* AES Key initialisation */
-  AES_KeyInitStructure.AES_Key3 = __REV(*(uint32_t*)(keyaddr));
-  keyaddr += 4;
-  AES_KeyInitStructure.AES_Key2 = __REV(*(uint32_t*)(keyaddr));
-  keyaddr += 4;
-  AES_KeyInitStructure.AES_Key1 = __REV(*(uint32_t*)(keyaddr));
-  keyaddr += 4;
-  AES_KeyInitStructure.AES_Key0 = __REV(*(uint32_t*)(keyaddr));
-  AES_KeyInit(&AES_KeyInitStructure);
-
-  /* AES configuration */
-  AES_InitStructure.AES_Operation = AES_Operation_Encryp;
-  AES_InitStructure.AES_Chaining = AES_Chaining_ECB;
-  AES_InitStructure.AES_DataType = AES_DataType_8b;
-  AES_Init(&AES_InitStructure);
-
-  /* Enable AES */
-  AES_Cmd(ENABLE);
-
-  for(i = 0; ((i < Ilength) && (status != ERROR)); i += 16)
-  {
-    AES_WriteSubData(*(uint32_t*)(inputaddr));
-    inputaddr += 4;
-    AES_WriteSubData(*(uint32_t*)(inputaddr));
-    inputaddr += 4;
-    AES_WriteSubData(*(uint32_t*)(inputaddr));
-    inputaddr += 4;
-    AES_WriteSubData(*(uint32_t*)(inputaddr));
-    inputaddr += 4;
-    
-    /* Wait for CCF flag to be set */
-    counter = 0;
-    do
-    {
-      ccstatus = AES_GetFlagStatus(AES_FLAG_CCF);
-      counter++;
-    }while((counter != AES_CC_TIMEOUT) && (ccstatus == RESET));
-    
-    if (ccstatus == RESET)
-    {
-      status = ERROR;
-    }
-    else
-    {
-      /* Clear CCF flag */
-      AES_ClearFlag(AES_FLAG_CCF);
-      /* Read cipher text */
-      *(uint32_t*)(outputaddr) = AES_ReadSubData();
-      outputaddr += 4;
-      *(uint32_t*)(outputaddr) = AES_ReadSubData();
-      outputaddr += 4;
-      *(uint32_t*)(outputaddr) = AES_ReadSubData();
-      outputaddr += 4;
-      *(uint32_t*)(outputaddr) = AES_ReadSubData();
-      outputaddr += 4;
-    }
-  }
-  
-  /* Disable AES before starting new processing */
-  AES_Cmd(DISABLE);
-
-  return status;
-}
-
-/**
-  * @brief  Decrypt using AES in ECB Mode
-  * @param  Key: Key used for AES algorithm.
-  * @param  Input: pointer to the Input buffer.
-  * @param  Ilength: length of the Input buffer, must be a multiple of 16 bytes.
-  * @param  Output: pointer to the returned buffer.
-  * @retval An ErrorStatus enumeration value:
-  *          - SUCCESS: Operation done
-  *          - ERROR: Operation failed
-  */
-ErrorStatus AES_ECB_Decrypt(uint8_t* Key, uint8_t* Input, uint32_t Ilength, uint8_t* Output)
-{
-  AES_InitTypeDef AES_InitStructure;
-  AES_KeyInitTypeDef  AES_KeyInitStructure;
-  ErrorStatus status = SUCCESS;
-  uint32_t keyaddr    = (uint32_t)Key;
-  uint32_t inputaddr  = (uint32_t)Input;
-  uint32_t outputaddr = (uint32_t)Output;
-  __IO uint32_t counter = 0;
-  uint32_t ccstatus = 0;
-  uint32_t i = 0;
-
-  /* AES Key initialisation */
-  AES_KeyInitStructure.AES_Key3 = __REV(*(uint32_t*)(keyaddr));
-  keyaddr += 4;
-  AES_KeyInitStructure.AES_Key2 = __REV(*(uint32_t*)(keyaddr));
-  keyaddr += 4;
-  AES_KeyInitStructure.AES_Key1 = __REV(*(uint32_t*)(keyaddr));
-  keyaddr += 4;
-  AES_KeyInitStructure.AES_Key0 = __REV(*(uint32_t*)(keyaddr));
-  AES_KeyInit(&AES_KeyInitStructure);
-
-  /* AES configuration */
-  AES_InitStructure.AES_Operation = AES_Operation_KeyDerivAndDecryp;
-  AES_InitStructure.AES_Chaining = AES_Chaining_ECB;
-  AES_InitStructure.AES_DataType = AES_DataType_8b;
-  AES_Init(&AES_InitStructure);
-
-  /* Enable AES */
-  AES_Cmd(ENABLE);
-
-  for(i = 0; ((i < Ilength) && (status != ERROR)); i += 16)
-  {
-    AES_WriteSubData(*(uint32_t*)(inputaddr));
-    inputaddr += 4;
-    AES_WriteSubData(*(uint32_t*)(inputaddr));
-    inputaddr += 4;
-    AES_WriteSubData(*(uint32_t*)(inputaddr));
-    inputaddr += 4;
-    AES_WriteSubData(*(uint32_t*)(inputaddr));
-    inputaddr += 4;
-    
-     /* Wait for CCF flag to be set */
-    counter = 0;
-    do
-    {
-      ccstatus = AES_GetFlagStatus(AES_FLAG_CCF);
-      counter++;
-    }while((counter != AES_CC_TIMEOUT) && (ccstatus == RESET));
-    
-    if (ccstatus == RESET)
-    {
-      status = ERROR;
-    }
-    else
-    {
-      /* Clear CCF flag */
-      AES_ClearFlag(AES_FLAG_CCF);
-
-      /* Read cipher text */
-      *(uint32_t*)(outputaddr) = AES_ReadSubData();
-      outputaddr += 4;
-      *(uint32_t*)(outputaddr) = AES_ReadSubData();
-      outputaddr += 4;
-      *(uint32_t*)(outputaddr) = AES_ReadSubData();
-      outputaddr += 4;
-      *(uint32_t*)(outputaddr) = AES_ReadSubData();
-      outputaddr += 4;
-    }
-  }
-
-  /* Disable AES before starting new processing */
-  AES_Cmd(DISABLE);
-
-  return status;
-}
-
-/**
-  * @brief  Encrypt using AES in CBC Mode
-  * @param  InitVectors: Initialisation Vectors used for AES algorithm.
-  * @param  Key: Key used for AES algorithm.
-  * @param  Input: pointer to the Input buffer.
-  * @param  Ilength: length of the Input buffer, must be a multiple of 16 bytes.
-  * @param  Output: pointer to the returned buffer.
-  * @retval An ErrorStatus enumeration value:
-  *          - SUCCESS: Operation done
-  *          - ERROR: Operation failed
-  */
-ErrorStatus AES_CBC_Encrypt(uint8_t* Key, uint8_t InitVectors[16], uint8_t* Input, uint32_t Ilength, uint8_t* Output)
-{
-  AES_InitTypeDef AES_InitStructure;
-  AES_KeyInitTypeDef  AES_KeyInitStructure;
-  AES_IVInitTypeDef AES_IVInitStructure;
-  ErrorStatus status = SUCCESS;
-  uint32_t keyaddr    = (uint32_t)Key;
-  uint32_t inputaddr  = (uint32_t)Input;
-  uint32_t outputaddr = (uint32_t)Output;
-  uint32_t ivaddr     = (uint32_t)InitVectors;
-  __IO uint32_t counter = 0;
-  uint32_t ccstatus = 0;
-  uint32_t i = 0;
-
-  /* AES Key initialisation*/
-  AES_KeyInitStructure.AES_Key3 = __REV(*(uint32_t*)(keyaddr));
-  keyaddr += 4;
-  AES_KeyInitStructure.AES_Key2 = __REV(*(uint32_t*)(keyaddr));
-  keyaddr += 4;
-  AES_KeyInitStructure.AES_Key1 = __REV(*(uint32_t*)(keyaddr));
-  keyaddr += 4;
-  AES_KeyInitStructure.AES_Key0 = __REV(*(uint32_t*)(keyaddr));
-  AES_KeyInit(&AES_KeyInitStructure);
-
-  /* AES Initialization Vectors */
-  AES_IVInitStructure.AES_IV3 = __REV(*(uint32_t*)(ivaddr));
-  ivaddr += 4;
-  AES_IVInitStructure.AES_IV2 = __REV(*(uint32_t*)(ivaddr));
-  ivaddr += 4;
-  AES_IVInitStructure.AES_IV1 = __REV(*(uint32_t*)(ivaddr));
-  ivaddr += 4;
-  AES_IVInitStructure.AES_IV0 = __REV(*(uint32_t*)(ivaddr));
-  AES_IVInit(&AES_IVInitStructure);
-
-  /* AES configuration */
-  AES_InitStructure.AES_Operation = AES_Operation_Encryp;
-  AES_InitStructure.AES_Chaining = AES_Chaining_CBC;
-  AES_InitStructure.AES_DataType = AES_DataType_8b;
-  AES_Init(&AES_InitStructure);
-
-  /* Enable AES */
-  AES_Cmd(ENABLE);
-
-  for(i = 0; ((i < Ilength) && (status != ERROR)); i += 16)
-  {
-    AES_WriteSubData(*(uint32_t*)(inputaddr));
-    inputaddr += 4;
-    AES_WriteSubData(*(uint32_t*)(inputaddr));
-    inputaddr += 4;
-    AES_WriteSubData(*(uint32_t*)(inputaddr));
-    inputaddr += 4;
-    AES_WriteSubData(*(uint32_t*)(inputaddr));
-    inputaddr += 4;
-    
-    /* Wait for CCF flag to be set */
-    counter = 0;
-    do
-    {
-      ccstatus = AES_GetFlagStatus(AES_FLAG_CCF);
-      counter++;
-    }while((counter != AES_CC_TIMEOUT) && (ccstatus == RESET));
-    
-    if (ccstatus == RESET)
-    {
-      status = ERROR;
-    }
-    else
-    {
-      /* Clear CCF flag */
-      AES_ClearFlag(AES_FLAG_CCF);
-
-      /* Read cipher text */
-      *(uint32_t*)(outputaddr) = AES_ReadSubData();
-      outputaddr += 4;
-      *(uint32_t*)(outputaddr) = AES_ReadSubData();
-      outputaddr += 4;
-      *(uint32_t*)(outputaddr) = AES_ReadSubData();
-      outputaddr += 4;
-      *(uint32_t*)(outputaddr) = AES_ReadSubData();
-      outputaddr += 4;
-    }
-  }
-
-  /* Disable AES before starting new processing */
-  AES_Cmd(DISABLE);
-
-  return status;
-}
-
-/**
-  * @brief  Decrypt using AES in CBC Mode
-  * @param  InitVectors: Initialisation Vectors used for AES algorithm.
-  * @param  Key: Key used for AES algorithm.
-  * @param  Input: pointer to the Input buffer.
-  * @param  Ilength: length of the Input buffer, must be a multiple of 16 bytes.
-  * @param  Output: pointer to the returned buffer.
-  * @retval An ErrorStatus enumeration value:
-  *          - SUCCESS: Operation done
-  *          - ERROR: Operation failed
-  */
-ErrorStatus AES_CBC_Decrypt(uint8_t* Key, uint8_t InitVectors[16], uint8_t* Input, uint32_t Ilength, uint8_t* Output)
-{
-  AES_InitTypeDef AES_InitStructure;
-  AES_KeyInitTypeDef  AES_KeyInitStructure;
-  AES_IVInitTypeDef AES_IVInitStructure;
-  ErrorStatus status = SUCCESS;
-  uint32_t keyaddr    = (uint32_t)Key;
-  uint32_t inputaddr  = (uint32_t)Input;
-  uint32_t outputaddr = (uint32_t)Output;
-  uint32_t ivaddr     = (uint32_t)InitVectors;
-  __IO uint32_t counter = 0;
-  uint32_t ccstatus = 0;
-  uint32_t i = 0;
-  
-  /* AES Key initialisation*/
-  AES_KeyInitStructure.AES_Key3 = __REV(*(uint32_t*)(keyaddr));
-  keyaddr += 4;
-  AES_KeyInitStructure.AES_Key2 = __REV(*(uint32_t*)(keyaddr));
-  keyaddr += 4;
-  AES_KeyInitStructure.AES_Key1 = __REV(*(uint32_t*)(keyaddr));
-  keyaddr += 4;
-  AES_KeyInitStructure.AES_Key0 = __REV(*(uint32_t*)(keyaddr));
-  AES_KeyInit(&AES_KeyInitStructure);
-
-  /* AES Initialization Vectors */
-  AES_IVInitStructure.AES_IV3 = __REV(*(uint32_t*)(ivaddr));
-  ivaddr += 4;
-  AES_IVInitStructure.AES_IV2 = __REV(*(uint32_t*)(ivaddr));
-  ivaddr += 4;
-  AES_IVInitStructure.AES_IV1 = __REV(*(uint32_t*)(ivaddr));
-  ivaddr += 4;
-  AES_IVInitStructure.AES_IV0 = __REV(*(uint32_t*)(ivaddr));
-  AES_IVInit(&AES_IVInitStructure);
-
-  /* AES configuration */
-  AES_InitStructure.AES_Operation = AES_Operation_KeyDerivAndDecryp;
-  AES_InitStructure.AES_Chaining = AES_Chaining_CBC;
-  AES_InitStructure.AES_DataType = AES_DataType_8b;
-  AES_Init(&AES_InitStructure);
-
-  /* Enable AES */
-  AES_Cmd(ENABLE);
-
-  for(i = 0; ((i < Ilength) && (status != ERROR)); i += 16)
-  {
-    AES_WriteSubData(*(uint32_t*)(inputaddr));
-    inputaddr += 4;
-    AES_WriteSubData(*(uint32_t*)(inputaddr));
-    inputaddr += 4;
-    AES_WriteSubData(*(uint32_t*)(inputaddr));
-    inputaddr += 4;
-    AES_WriteSubData(*(uint32_t*)(inputaddr));
-    inputaddr += 4;
-    
-    /* Wait for CCF flag to be set */
-    counter = 0;
-    do
-    {
-      ccstatus = AES_GetFlagStatus(AES_FLAG_CCF);
-      counter++;
-    }while((counter != AES_CC_TIMEOUT) && (ccstatus == RESET));
-
-    if (ccstatus == RESET)
-    {
-      status = ERROR;
-    }
-    else
-    {
-      /* Clear CCF flag */
-      AES_ClearFlag(AES_FLAG_CCF);
-
-      /* Read cipher text */
-      *(uint32_t*)(outputaddr) = AES_ReadSubData();
-      outputaddr += 4;
-      *(uint32_t*)(outputaddr) = AES_ReadSubData();
-      outputaddr += 4;
-      *(uint32_t*)(outputaddr) = AES_ReadSubData();
-      outputaddr += 4;
-      *(uint32_t*)(outputaddr) = AES_ReadSubData();
-      outputaddr += 4;
-    }
-  }
-
-  /* Disable AES before starting new processing */
-  AES_Cmd(DISABLE);
-
-  return status;
-}
-
-/**
-  * @brief  Encrypt using AES in CTR Mode
-  * @param  InitVectors: Initialisation Vectors used for AES algorithm.
-  * @param  Key: Key used for AES algorithm.
-  * @param  Input: pointer to the Input buffer.
-  * @param  Ilength: length of the Input buffer, must be a multiple of 16 bytes.
-  * @param  Output: pointer to the returned buffer.
-  * @retval An ErrorStatus enumeration value:
-  *          - SUCCESS: Operation done
-  *          - ERROR: Operation failed
-  */
-ErrorStatus AES_CTR_Encrypt(uint8_t* Key, uint8_t InitVectors[16], uint8_t* Input, uint32_t Ilength, uint8_t* Output)
-{
-  AES_InitTypeDef AES_InitStructure;
-  AES_KeyInitTypeDef  AES_KeyInitStructure;
-  AES_IVInitTypeDef AES_IVInitStructure;
-
-  ErrorStatus status = SUCCESS;
-  uint32_t keyaddr    = (uint32_t)Key;
-  uint32_t inputaddr  = (uint32_t)Input;
-  uint32_t outputaddr = (uint32_t)Output;
-  uint32_t ivaddr     = (uint32_t)InitVectors;
-  __IO uint32_t counter = 0;
-  uint32_t ccstatus = 0;
-  uint32_t i = 0;
-
-  /* AES key initialisation*/
-  AES_KeyInitStructure.AES_Key3 = __REV(*(uint32_t*)(keyaddr));
-  keyaddr += 4;
-  AES_KeyInitStructure.AES_Key2 = __REV(*(uint32_t*)(keyaddr));
-  keyaddr += 4;
-  AES_KeyInitStructure.AES_Key1 = __REV(*(uint32_t*)(keyaddr));
-  keyaddr += 4;
-  AES_KeyInitStructure.AES_Key0 = __REV(*(uint32_t*)(keyaddr));
-  AES_KeyInit(&AES_KeyInitStructure);
-
-  /* AES Initialization Vectors */
-  AES_IVInitStructure.AES_IV3 = __REV(*(uint32_t*)(ivaddr));
-  ivaddr += 4;
-  AES_IVInitStructure.AES_IV2= __REV(*(uint32_t*)(ivaddr));
-  ivaddr += 4;
-  AES_IVInitStructure.AES_IV1 = __REV(*(uint32_t*)(ivaddr));
-  ivaddr += 4;
-  AES_IVInitStructure.AES_IV0= __REV(*(uint32_t*)(ivaddr));
-  AES_IVInit(&AES_IVInitStructure);
-
-  /* AES configuration */
-  AES_InitStructure.AES_Operation = AES_Operation_Encryp;
-  AES_InitStructure.AES_Chaining = AES_Chaining_CTR;
-  AES_InitStructure.AES_DataType = AES_DataType_8b;
-  AES_Init(&AES_InitStructure);
-
-  /* Enable AES */
-  AES_Cmd(ENABLE);
-
-  for(i = 0; ((i < Ilength) && (status != ERROR)); i += 16)
-  {
-    AES_WriteSubData(*(uint32_t*)(inputaddr));
-    inputaddr += 4;
-    AES_WriteSubData(*(uint32_t*)(inputaddr));
-    inputaddr += 4;
-    AES_WriteSubData(*(uint32_t*)(inputaddr));
-    inputaddr += 4;
-    AES_WriteSubData(*(uint32_t*)(inputaddr));
-    inputaddr += 4;
-    
-    /* Wait for CCF flag to be set */
-    counter = 0;
-    do
-    {
-      ccstatus = AES_GetFlagStatus(AES_FLAG_CCF);
-      counter++;
-    }while((counter != AES_CC_TIMEOUT) && (ccstatus == RESET));
-
-    if (ccstatus == RESET)
-    {
-      status = ERROR;
-    }
-    else
-    {
-      /* Clear CCF flag */
-      AES_ClearFlag(AES_FLAG_CCF);
-
-      /* Read cipher text */
-      *(uint32_t*)(outputaddr) = AES_ReadSubData();
-      outputaddr += 4;
-      *(uint32_t*)(outputaddr) = AES_ReadSubData();
-      outputaddr += 4;
-      *(uint32_t*)(outputaddr) = AES_ReadSubData();
-      outputaddr += 4;
-      *(uint32_t*)(outputaddr) = AES_ReadSubData();
-      outputaddr += 4;
-    }
-  }
-
-  /* Disable AES before starting new processing */
-  AES_Cmd(DISABLE);
-
-  return status;
-}
-
-/**
-  * @brief  Decrypt using AES in CTR Mode
-  * @param  InitVectors: Initialisation Vectors used for AES algorithm.
-  * @param  Key: Key used for AES algorithm.
-  * @param  Input: pointer to the Input buffer.
-  * @param  Ilength: length of the Input buffer, must be a multiple of 16 bytes.
-  * @param  Output: pointer to the returned buffer.
-  * @retval An ErrorStatus enumeration value:
-  *          - SUCCESS: Operation done
-  *          - ERROR: Operation failed
-  */
-ErrorStatus AES_CTR_Decrypt(uint8_t* Key, uint8_t InitVectors[16], uint8_t* Input, uint32_t Ilength, uint8_t* Output)
-{
-  AES_InitTypeDef AES_InitStructure;
-  AES_KeyInitTypeDef  AES_KeyInitStructure;
-  AES_IVInitTypeDef AES_IVInitStructure;
-
-  ErrorStatus status = SUCCESS;
-  uint32_t keyaddr    = (uint32_t)Key;
-  uint32_t inputaddr  = (uint32_t)Input;
-  uint32_t outputaddr = (uint32_t)Output;
-  uint32_t ivaddr     = (uint32_t)InitVectors;
-  __IO uint32_t counter = 0;
-  uint32_t ccstatus = 0;
-  uint32_t i = 0;
-
-  /* AES Key initialisation*/
-  AES_KeyInitStructure.AES_Key3 = __REV(*(uint32_t*)(keyaddr));
-  keyaddr += 4;
-  AES_KeyInitStructure.AES_Key2 = __REV(*(uint32_t*)(keyaddr));
-  keyaddr += 4;
-  AES_KeyInitStructure.AES_Key1 = __REV(*(uint32_t*)(keyaddr));
-  keyaddr += 4;
-  AES_KeyInitStructure.AES_Key0 = __REV(*(uint32_t*)(keyaddr));
-  AES_KeyInit(&AES_KeyInitStructure);
-
-  /* AES Initialization Vectors */
-  AES_IVInitStructure.AES_IV3 = __REV(*(uint32_t*)(ivaddr));
-  ivaddr += 4;
-  AES_IVInitStructure.AES_IV2 = __REV(*(uint32_t*)(ivaddr));
-  ivaddr += 4;
-  AES_IVInitStructure.AES_IV1 = __REV(*(uint32_t*)(ivaddr));
-  ivaddr += 4;
-  AES_IVInitStructure.AES_IV0 = __REV(*(uint32_t*)(ivaddr));
-  AES_IVInit(&AES_IVInitStructure);
-
-  /* AES configuration */
-  AES_InitStructure.AES_Operation = AES_Operation_KeyDerivAndDecryp;
-  AES_InitStructure.AES_Chaining = AES_Chaining_CTR;
-  AES_InitStructure.AES_DataType = AES_DataType_8b;
-  AES_Init(&AES_InitStructure);
-
-  /* Enable AES */
-  AES_Cmd(ENABLE);
-
-  for(i = 0; ((i < Ilength) && (status != ERROR)); i += 16)
-  {
-    AES_WriteSubData(*(uint32_t*)(inputaddr));
-    inputaddr += 4;
-    AES_WriteSubData(*(uint32_t*)(inputaddr));
-    inputaddr += 4;
-    AES_WriteSubData(*(uint32_t*)(inputaddr));
-    inputaddr += 4;
-    AES_WriteSubData(*(uint32_t*)(inputaddr));
-    inputaddr += 4;
-    
-    /* Wait for CCF flag to be set */
-    counter = 0;
-    do
-    {
-      ccstatus = AES_GetFlagStatus(AES_FLAG_CCF);
-      counter++;
-    }while((counter != AES_CC_TIMEOUT) && (ccstatus == RESET));
-
-    if (ccstatus == RESET)
-    {
-      status = ERROR;
-    }
-    else
-    {
-      /* Clear CCF flag */
-      AES_ClearFlag(AES_FLAG_CCF);
-    
-      /* Read cipher text */
-      *(uint32_t*)(outputaddr) = AES_ReadSubData();
-      outputaddr += 4;
-      *(uint32_t*)(outputaddr) = AES_ReadSubData();
-      outputaddr += 4;
-      *(uint32_t*)(outputaddr) = AES_ReadSubData();
-      outputaddr += 4;
-      *(uint32_t*)(outputaddr) = AES_ReadSubData();
-      outputaddr += 4;
-    }
-  }
-
-  /* Disable AES before starting new processing */
-  AES_Cmd(DISABLE);
-
-  return status;
-}
-
-/**
-  * @}
-  */
-
-/**
-  * @}
-  */ 
-
-/**
-  * @}
-  */ 
-
-/**
-  * @}
-  */ 
-
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
-