stm32F4 AES256加解密

现在高级点的MCU都会带AES加密引擎，软件算有延迟硬件基本可以数据发出结果就马上返回，软件加密库可参考mbedTLS，现在信息安全也是很重要通讯数据，存储数据都会进行加密存储以防被破解防制，我写程序的习惯都是对于上层或应用来说都是很友好，crypt_read(CARD_MANAGE_TypeDef *card_manage,uint16_t addr, uint16_t len, uint8_t *ptr)、crypt_write(CARD_MANAGE_TypeDef *card_manage,uint16_t addr, uint16_t len, uint8_t *ptr) 读写2个函数

#include "system.h"
#include "crypt.h"
#include "at88sc.h"
#include "smartcard.h"
//#include "aes.h"
#include "secure_storage.h"
#include "string.h"
//#include "aes.h"
#include "stm32f4xx_hal.h"#undef CRYPT_DEBUG
#ifdef CRYPT_DEBUG#define   crypt_log(...) do{if(DEBUG(DEBUG_ENABLE)){DBG_LOG("[CRYPT](%ld) ",__LINE__);DBG_LOG(__VA_ARGS__);}}while(0)#define crypt_usr(...) do{if(DEBUG(DEBUG_ENABLE)){DBG_LOG("[CRYPT] ");DBG_USR(__VA_ARGS__);}}while(0)#define crypt_err(...) do{if(DEBUG(DEBUG_ENABLE)){DBG_LOG("[CRYPT] ");DBG_ERR(__VA_ARGS__);}}while(0)#define crypt_dump(...) if(DEBUG(DEBUG_ENABLE)){DBG_DUMP(__VA_ARGS__);}
#else#define crypt_log(...)#define crypt_usr(...)#define crypt_err(...)#define crypt_dump(...)
#endifCRYP_InitTypeDef init;CRYP_HandleTypeDef hcryp;
DMA_HandleTypeDef hdma_cryp_in;
DMA_HandleTypeDef hdma_cryp_out;xSemaphoreHandle    crypt_semaphore;
uint8_t crypt_complete=0;
extern void Error_Handler(SYSTEM_ERROR_CODE_TypeDef errorCode);/**
* @brief CRYP MSP Initialization
* This function configures the hardware resources used in this example
* @param hcryp: CRYP handle pointer
* @retval None
*/
void HAL_CRYP_MspInit(CRYP_HandleTypeDef* hcryp)
{if(hcryp->Instance==CRYP){/* USER CODE BEGIN CRYP_MspInit 0 *//* USER CODE END CRYP_MspInit 0 *//* Peripheral clock enable */__HAL_RCC_CRYP_CLK_ENABLE();/* CRYP interrupt Init */HAL_NVIC_SetPriority(CRYP_IRQn, 14, 0);HAL_NVIC_EnableIRQ(CRYP_IRQn);/* USER CODE BEGIN CRYP_MspInit 1 *//* USER CODE END CRYP_MspInit 1 */}}/**
* @brief CRYP MSP De-Initialization
* This function freeze the hardware resources used in this example
* @param hcryp: CRYP handle pointer
* @retval None
*/void HAL_CRYP_MspDeInit(CRYP_HandleTypeDef* hcryp)
{if(hcryp->Instance==CRYP){/* USER CODE BEGIN CRYP_MspDeInit 0 *//* USER CODE END CRYP_MspDeInit 0 *//* Peripheral clock disable */__HAL_RCC_CRYP_CLK_DISABLE();/* CRYP interrupt DeInit */HAL_NVIC_DisableIRQ(CRYP_IRQn);/* USER CODE BEGIN CRYP_MspDeInit 1 *//* USER CODE END CRYP_MspDeInit 1 */}}static void MX_CRYP_Init(uint8_t *key)
{/* USER CODE BEGIN CRYP_Init 0 *//* USER CODE END CRYP_Init 0 *//* USER CODE BEGIN CRYP_Init 1 *//* USER CODE END CRYP_Init 1 */hcryp.Instance = CRYP;hcryp.Init.DataType = CRYP_DATATYPE_8B;hcryp.Init.KeySize = CRYP_KEYSIZE_256B;hcryp.Init.pKey = (uint8_t *)key;if (HAL_CRYP_Init(&hcryp) != HAL_OK){
//    Error_Handler();}/* USER CODE BEGIN CRYP_Init 2 *//* USER CODE END CRYP_Init 2 */}/** * Enable DMA controller clock*/
static void MX_DMA_Init(void)
{/* DMA controller clock enable */__HAL_RCC_DMA2_CLK_ENABLE();/* DMA interrupt init *//* DMA2_Stream5_IRQn interrupt configuration */HAL_NVIC_SetPriority(DMA2_Stream5_IRQn, 14, 0);HAL_NVIC_EnableIRQ(DMA2_Stream5_IRQn);/* DMA2_Stream6_IRQn interrupt configuration */HAL_NVIC_SetPriority(DMA2_Stream6_IRQn, 14, 0);HAL_NVIC_EnableIRQ(DMA2_Stream6_IRQn);}/*** @brief This function handles CRYP global interrupt.*/
void CRYP_IRQHandler(void)
{/* USER CODE BEGIN CRYP_IRQn 0 *//* USER CODE END CRYP_IRQn 0 */HAL_CRYP_IRQHandler(&hcryp);/* USER CODE BEGIN CRYP_IRQn 1 *//* USER CODE END CRYP_IRQn 1 */
}/**
* AES256执行完成回调.
* 设置标志位，加解密函数等待这个标志位.
* @param[in]   hcryp:AES256句柄.
* @param[out]  无.
* @retval  无
* @par 标识符
*      保留
* @par 其它
*      无
* @par 修改日志
*      Kend Deng于2019-03-29创建
*/
void HAL_CRYP_OutCpltCallback(CRYP_HandleTypeDef *hcryp){crypt_complete = 1;
}/**
* AES256加密函数.
* 判断是不16字节倍数，启动硬件加密并等待结果.
* @param[in]   key:秘钥，in:输入明文数据，out:输出密文数据，size:长度，必需16的倍数.
* @param[out]  无.
* @retval  无
* @par 标识符
*      保留
* @par 其它
*      无
* @par 修改日志
*      Kend Deng于2019-03-29创建
*/
void crypt_encryption(uint8_t *key, uint8_t *in, uint8_t *out, uint16_t size){if( size % 16 == 0 && size!=0 ){MX_CRYP_Init(key);
//      __HAL_CRYP_RESET_HANDLE_STATE(&hcryp);crypt_complete = 0;HAL_CRYP_AESECB_Encrypt_IT(&hcryp, in, size, out);while(crypt_complete==0){vTaskDelay(1);}
//      xSemaphoreTake(crypt_semaphore,1000);}
}/**
* AES256解密函数.
* 判断是不16字节倍数，启动硬件解密并等待结果.
* @param[in]   key:秘钥，in:输入明文数据，out:输出密文数据，size:长度，必需16的倍数.
* @param[out]  无.
* @retval  无
* @par 标识符
*      保留
* @par 其它
*      无
* @par 修改日志
*      Kend Deng于2019-03-29创建
*/
void crypt_decryption(uint8_t *key, uint8_t *in, uint8_t *out, uint16_t size){if( size % 16 == 0 && size!=0 ){MX_CRYP_Init(key);
//      __HAL_CRYP_RESET_HANDLE_STATE(&hcryp);crypt_complete = 0;HAL_CRYP_AESECB_Decrypt_IT(&hcryp, in, size, out);while(crypt_complete==0){vTaskDelay(1);}
//      xSemaphoreTake(crypt_semaphore,100);}
}/**
* 加密写.
* 由于AES256算法是16字节区域加密，对写起始地址及结束地址进行16倍数的调整，使用读-解密-改-加密-写方案.
* 用于智能卡，备份存储卡，内部加密存储的加密
* @param[in]   dev:设备类型，addr:起始地址，len:长度，ptr:数据缓冲.
* @param[out]  无.
* @retval  0,写失败，其它：写入长度
* @par 标识符
*      保留
* @par 其它
*      无
* @par 修改日志
*      Kend Deng于2019-03-29创建
*/
uint16_t crypt_write(CARD_MANAGE_TypeDef *card_manage,uint16_t addr, uint16_t len, uint8_t *ptr){xSemaphoreTake(crypt_semaphore,portMAX_DELAY);uint16_t(*write_func)(CARD_MANAGE_TypeDef *card_manage,uint16_t addr, uint16_t len, uint8_t *ptr); uint16_t(*read_func)(CARD_MANAGE_TypeDef *card_manage,uint16_t addr, uint16_t len, uint8_t *ptr); CARD_MANAGE_TypeDef *card_ptr;if( card_manage==NULL ){write_func = at88sc_write_storage;read_func = at88sc_read_storage;card_ptr = NULL;}else{write_func = sc_write_storage;read_func = sc_read_storage;card_ptr = card_manage;}uint16_t start_block, end_block;start_block = addr/CRYPT_BLOCK_SIZE;end_block = (addr+len)/CRYPT_BLOCK_SIZE;uint16_t size = (end_block-start_block+1)*CRYPT_BLOCK_SIZE;uint8_t *read_buf = malloc(size);uint8_t   *write_buf = malloc(size);if( read_buf != NULL && write_buf != NULL ){memset(read_buf,0,size);memset(write_buf,0,size);uint8_t start_addr = addr%CRYPT_BLOCK_SIZE;//memcpy(read_block,temp+start_block*CRYPT_BLOCK_SIZE,CRYPT_BLOCK_SIZE);read_func(card_ptr,start_block*CRYPT_BLOCK_SIZE,size,read_buf);
//      crypt_log("write encrypt:");
//      crypt_dump(read_buf,size);crypt_decryption((uint8_t*)&default_password.encryption_key,read_buf,write_buf,size);
//      crypt_log("write plaintext read:");
//      crypt_dump(write_buf,size);memcpy(write_buf + start_addr, ptr, len);
//      crypt_log("write plaintext cpy:");
//      crypt_dump(write_buf,size);crypt_encryption((uint8_t*)&default_password.encryption_key,write_buf,read_buf,size);//memcpy(temp+start_block*CRYPT_BLOCK_SIZE,write_block,CRYPT_BLOCK_SIZE);
//      crypt_log("write decrypt:");
//      crypt_dump(read_buf,size);write_func(card_ptr, start_block*CRYPT_BLOCK_SIZE,size,read_buf);free(read_buf);free(write_buf);}else{if( read_buf!=NULL )free(read_buf);if( write_buf!=NULL )free(write_buf);len = 0;}xSemaphoreGive(crypt_semaphore);return len;
}/**
* 加密读.
* 由于AES256算法是16字节区域加密，对读起始地址及结束地址进行16倍数的调整，使用读-解密-拷贝方案.
* 用于智能卡，备份存储卡，内部加密存储的加密
* @param[in]   dev:设备类型，addr:起始地址，len:长度，ptr:数据缓冲.
* @param[out]  无.
* @retval  0,读失败，其它：读取长度
* @par 标识符
*      保留
* @par 其它
*      无
* @par 修改日志
*      Kend Deng于2019-03-29创建
*/
uint16_t crypt_read(CARD_MANAGE_TypeDef *card_manage,uint16_t addr, uint16_t len, uint8_t *ptr){xSemaphoreTake(crypt_semaphore,portMAX_DELAY);uint16_t(*write_func)(CARD_MANAGE_TypeDef *card_manage,uint16_t addr, uint16_t len, uint8_t *ptr); uint16_t(*read_func)(CARD_MANAGE_TypeDef *card_manage,uint16_t addr, uint16_t len, uint8_t *ptr); CARD_MANAGE_TypeDef *card_ptr;if( card_manage==NULL ){write_func = at88sc_write_storage;read_func = at88sc_read_storage;card_ptr = NULL;}else{write_func = sc_write_storage;read_func = sc_read_storage;card_ptr = card_manage;}uint16_t start_block, end_block;start_block = addr/CRYPT_BLOCK_SIZE;end_block = (addr+len)/CRYPT_BLOCK_SIZE;uint16_t size = (end_block-start_block+1)*CRYPT_BLOCK_SIZE;uint8_t *read_buf = malloc(size);uint8_t    *write_buf = malloc(size);if( read_buf != NULL && write_buf != NULL ){memset(read_buf,0,size);memset(write_buf,0,size);uint8_t start_addr = addr%CRYPT_BLOCK_SIZE;//memcpy(read_block,temp+start_block*CRYPT_BLOCK_SIZE,CRYPT_BLOCK_SIZE);read_func(card_ptr, start_block*CRYPT_BLOCK_SIZE,size,read_buf);
//      if( write_func == sc_write_storage ){
//          crypt_log("read encrypt:");
//          crypt_dump(read_buf,size);
//      }crypt_decryption((uint8_t*)&default_password.encryption_key,read_buf,write_buf,size);
//      crypt_log("read plaintext:");
//      crypt_dump(write_buf,size);memcpy(ptr, write_buf + start_addr, len);free(read_buf);free(write_buf);}else {if( read_buf!=NULL )free(read_buf);if( write_buf!=NULL )free(write_buf);len = 0;}xSemaphoreGive(crypt_semaphore);return len;
}//void crypt_encryption(uint8_t *in, uint8_t *out){
//
//  mbedtls_aes_context aes_ctx;
//
//    mbedtls_aes_init(&aes_ctx);
//    //设置加密密钥
//    mbedtls_aes_setkey_enc(&aes_ctx, default_password.encryption_key, 256);
//
//    mbedtls_aes_crypt_ecb(&aes_ctx, MBEDTLS_AES_ENCRYPT, in, out);
//
//  mbedtls_aes_free(&aes_ctx);
//
//}
//
//void crypt_decryption(uint8_t *in, uint8_t *out){
//
//  mbedtls_aes_context aes_ctx;
//
//  mbedtls_aes_init(&aes_ctx);
//    //设置解密密钥
//    mbedtls_aes_setkey_dec(&aes_ctx, default_password.encryption_key, 256);
//
//    mbedtls_aes_crypt_ecb(&aes_ctx, MBEDTLS_AES_DECRYPT, in, out);
//
//    mbedtls_aes_free(&aes_ctx);
//}//uint16_t crypt_write(CRYPT_DEV_T dev,uint16_t addr, uint16_t len, uint8_t *ptr){
//
//  uint8_t read_block[CRYPT_BLOCK_SIZE];
//  uint8_t write_block[CRYPT_BLOCK_SIZE];
//  uint8_t plaintext_block[CRYPT_BLOCK_SIZE];
//
//  uint16_t(*write_func)(uint16_t addr, uint16_t len, uint8_t *ptr);
//  uint16_t(*read_func)(uint16_t addr, uint16_t len, uint8_t *ptr);
//
//  if( dev==CRYPT_SC ){
//      write_func = sc_write_storage;
//      read_func = sc_read_storage;
//  }
//  else if( dev==CRYPT_AT ){
//      write_func = at88sc_write_storage;
//      read_func = at88sc_read_storage;
//  }
//
//  uint16_t start_block, end_block;
//  start_block = addr/CRYPT_BLOCK_SIZE;
//  end_block = (addr+len)/CRYPT_BLOCK_SIZE;
//  uint8_t block_addr = addr%CRYPT_BLOCK_SIZE;
//  uint8_t block_len;
//  uint16_t pos=addr;
//  uint8_t copy_len=0;
//
//  while( pos<addr+len ){
//      vTaskDelay(1);
//
//      //memcpy(read_block,temp+start_block*CRYPT_BLOCK_SIZE,CRYPT_BLOCK_SIZE);
//      read_func(start_block*CRYPT_BLOCK_SIZE,CRYPT_BLOCK_SIZE,read_block);
//      crypt_decryption(read_block,plaintext_block);
//
//      block_addr = pos%CRYPT_BLOCK_SIZE;
//      block_len = (block_addr%CRYPT_BLOCK_SIZE)?CRYPT_BLOCK_SIZE-block_addr:CRYPT_BLOCK_SIZE;
//
//      if( (len+addr - pos) > block_len )
//          copy_len = block_len;
//      else
//          copy_len = (len+addr - pos);
//
//      memcpy(plaintext_block + block_addr, ptr + pos - addr , copy_len);
//      crypt_encryption(plaintext_block,write_block);
//      //memcpy(temp+start_block*CRYPT_BLOCK_SIZE,write_block,CRYPT_BLOCK_SIZE);
//      write_func(start_block*CRYPT_BLOCK_SIZE,CRYPT_BLOCK_SIZE,write_block);
//
//      pos += block_len;
//
//      start_block++;
//  }
//}//uint16_t crypt_read(CRYPT_DEV_T dev,uint16_t addr, uint16_t len, uint8_t *ptr){
//
//  uint8_t read_block[CRYPT_BLOCK_SIZE];
//  uint8_t plaintext_block[CRYPT_BLOCK_SIZE];
//
//  uint16_t(*write_func)(uint16_t addr, uint16_t len, uint8_t *ptr);
//  uint16_t(*read_func)(uint16_t addr, uint16_t len, uint8_t *ptr);
//
//  if( dev==CRYPT_SC ){
//      write_func = sc_write_storage;
//      read_func = sc_read_storage;
//  }
//  else if( dev==CRYPT_AT ){
//      write_func = at88sc_write_storage;
//      read_func = at88sc_read_storage;
//  }
//
//      uint16_t start_block, end_block;
//  start_block = addr/CRYPT_BLOCK_SIZE;
//  end_block = (addr+len)/CRYPT_BLOCK_SIZE;
//  uint8_t block_addr = addr%CRYPT_BLOCK_SIZE;
//  uint8_t block_len;
//  uint16_t pos=addr;
//  uint8_t copy_len=0;
//
//  while( pos<addr+len ){
//      vTaskDelay(1);
//
//      read_func(start_block*CRYPT_BLOCK_SIZE,CRYPT_BLOCK_SIZE,read_block);
//      //memcpy(read_block,temp+start_block*CRYPT_BLOCK_SIZE,CRYPT_BLOCK_SIZE);
//      crypt_decryption(read_block,plaintext_block);
//
//      block_addr = pos%CRYPT_BLOCK_SIZE;
//      block_len = (block_addr%CRYPT_BLOCK_SIZE)?CRYPT_BLOCK_SIZE-block_addr:CRYPT_BLOCK_SIZE;
//
//      if( (len+addr - pos) > block_len )
//          copy_len = block_len;
//      else
//          copy_len = (len+addr - pos);
//
//      memcpy(ptr + pos - addr, plaintext_block + block_addr , copy_len);
//
//      pos += block_len;
//
//      start_block++;
//  }
//}//uint8_t temp[128]={1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40};//void crypt_write(CRYPT_DEV_T dev,uint8_t *ptr,uint16_t addr, uint16_t len){
//
//  uint8_t read_block[CRYPT_BLOCK_SIZE];
//  uint8_t write_block[CRYPT_BLOCK_SIZE];
//  uint8_t plaintext_block[CRYPT_BLOCK_SIZE];
//
//  uint16_t(*write_func)(uint16_t addr, uint16_t len, uint8_t *ptr);
//  uint16_t(*read_func)(uint16_t addr, uint16_t len, uint8_t *ptr);
//
//  if( dev==CRYPT_SC ){
//      write_func = sc_write_storage;
//      read_func = sc_read_storage;
//  }
//  else if( dev==CRYPT_AT ){
//      write_func = at88sc_write_storage;
//      read_func = at88sc_read_storage;
//  }
//
//  uint16_t start_block, end_block;
//  start_block = addr/CRYPT_BLOCK_SIZE;
//  end_block = (addr+len)/CRYPT_BLOCK_SIZE;
//  uint8_t block_addr = addr%CRYPT_BLOCK_SIZE;
//  uint8_t block_len;
//  uint16_t pos=addr;
//  uint8_t copy_len=0;
//
//  while( pos<addr+len ){
//
//      memcpy(read_block,temp+start_block*CRYPT_BLOCK_SIZE,CRYPT_BLOCK_SIZE);
//      crypt_decryption(read_block,plaintext_block);
//
//      block_addr = pos%CRYPT_BLOCK_SIZE;
//      block_len = (block_addr%CRYPT_BLOCK_SIZE)?CRYPT_BLOCK_SIZE-block_addr:CRYPT_BLOCK_SIZE;
//
//      if( (len+addr - pos) > block_len )
//          copy_len = block_len;
//      else
//          copy_len = (len+addr - pos);
//
//      memcpy(plaintext_block + block_addr, ptr + pos - addr , copy_len);
//      crypt_encryption(plaintext_block,write_block);
//      //write_func(start_block*CRYPT_BLOCK_SIZE,CRYPT_BLOCK_SIZE,plaintext_block);
//      memcpy(temp+start_block*CRYPT_BLOCK_SIZE,write_block,CRYPT_BLOCK_SIZE);
//
//      pos += block_len;
//
//      start_block++;
//  }
//}//void crypt_read(CRYPT_DEV_T dev,uint8_t *ptr,uint16_t addr, uint16_t len){
//
//  uint8_t read_block[CRYPT_BLOCK_SIZE];
//  uint8_t plaintext_block[CRYPT_BLOCK_SIZE];
//
//  uint16_t(*write_func)(uint16_t addr, uint16_t len, uint8_t *ptr);
//  uint16_t(*read_func)(uint16_t addr, uint16_t len, uint8_t *ptr);
//
//  if( dev==CRYPT_SC ){
//      write_func = sc_write_storage;
//      read_func = sc_read_storage;
//  }
//  else if( dev==CRYPT_AT ){
//      write_func = at88sc_write_storage;
//      read_func = at88sc_read_storage;
//  }
//
//      uint16_t start_block, end_block;
//  start_block = addr/CRYPT_BLOCK_SIZE;
//  end_block = (addr+len)/CRYPT_BLOCK_SIZE;
//  uint8_t block_addr = addr%CRYPT_BLOCK_SIZE;
//  uint8_t block_len;
//  uint16_t pos=addr;
//  uint8_t copy_len=0;
//
//  while( pos<addr+len ){
//
//      memcpy(read_block,temp+start_block*CRYPT_BLOCK_SIZE,CRYPT_BLOCK_SIZE);
//      crypt_decryption(read_block,plaintext_block);
//
//      block_addr = pos%CRYPT_BLOCK_SIZE;
//      block_len = (block_addr%CRYPT_BLOCK_SIZE)?CRYPT_BLOCK_SIZE-block_addr:CRYPT_BLOCK_SIZE;
//
//      if( (len+addr - pos) > block_len )
//          copy_len = block_len;
//      else
//          copy_len = (len+addr - pos);
//
//      memcpy(ptr + pos - addr, plaintext_block + block_addr , copy_len);
//
//      pos += block_len;
//
//      start_block++;
//  }
//}/**
* AES256初始化.
* 初始化DAM及互斥信号量.
* @param[in]   无.
* @param[out]  无.
* @par 标识符
* @retval  无.
*      保留
* @par 其它
*      无
* @par 修改日志
*      Kend Deng于2019-03-29创建
*/
FUN_STATUS_T crypt_init(void){//    MX_DMA_Init();//MX_CRYP_Init();crypt_semaphore = xSemaphoreCreateMutex();if( crypt_semaphore==NULL )return FUN_ERROR;return FUN_OK;
}void crypt_test(void){char str[]={0xa0,0xa1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9,0xb0,0xb1,0xb2,0xb3,0xb4,0xb5,0xb6,0xb7,0xb8,0xb9,0xc0,0xc1,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xd0,0xd1,0xd2,0xd3};char read[33]={0};crypt_write(AT_SC,0,32,(uint8_t*)str);crypt_read(AT_SC,0,32,(uint8_t*)read);
}

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