/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/* STM32F4xx HAL library initialization:
- Configure the Flash prefetch, instruction and Data caches
- Configure the Systick to generate an interrupt each 1 msec
- Set NVIC Group Priority to 4
- Global MSP (MCU Support Package) initialization
*/
HAL_Init();
/* Configure the system clock to 180 Mhz */
SystemClock_Config();
/* Initialize LED1, LED2 and LED3 */
BSP_LED_Init(LED1);
BSP_LED_Init(LED2);
BSP_LED_Init(LED3);
/*##-1- Configure the CRYP peripheral ######################################*/
/* Set the CRYP parameters */
CrypHandle.Init.DataType = CRYP_DATATYPE_8B;
CrypHandle.Init.KeySize = CRYP_KEYSIZE_128B;
CrypHandle.Init.pKey = aAES128Key;
CrypHandle.Init.pInitVect = aNonce;
CrypHandle.Init.IVSize = uwNonceSize;
CrypHandle.Init.Header = aHeaderMessage;
CrypHandle.Init.HeaderSize = 16;
CrypHandle.Init.TagSize = 6;
CrypHandle.Init.pScratch = aHBuffer;
if(HAL_CRYP_Init(&CrypHandle) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/*##-2- Start the AES Encryption in CCM chaining mode ######################*/
if(HAL_CRYPEx_AESCCM_Encrypt(&CrypHandle, aPlaintext, PLAINTEXT_SIZE, aOutputText, 0xFF) != HAL_OK)
{
/* Encryption Error */
Error_Handler();
}
/*##-3- Compute the authentication TAG for AES CCM mode ####################*/
if(HAL_CRYPEx_AESCCM_Finish(&CrypHandle, aMAC, 0xFF) != HAL_OK)
{
/* TAG Error */
Error_Handler();
}
/*##-4- Compare the encrypted text and the aMAC with the expected ones #####*/
if( (memcmp(aOutputText, aExpectedCyphertext, PLAINTEXT_SIZE) != 0) || (memcmp(aMAC, aExpectedMAC, MAC_SIZE) != 0))
{
/* Wrong encryption: Turn LED2 on */
BSP_LED_On(LED2);
}
else
{
/* Right encryption: Turn LED1 on */
BSP_LED_On(LED1);
}
/* Infinite loop */
while(1)
{
}
}
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/* STM32F4xx HAL library initialization:
- Configure the Flash prefetch, instruction and Data caches
- Systick timer is configured by default as source of time base, but user
can eventually implement his proper time base source (a general purpose
timer for example or other time source), keeping in mind that Time base
duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
handled in milliseconds basis.
- Set NVIC Group Priority to 4
- Low Level Initialization: global MSP (MCU Support Package) initialization
*/
HAL_Init();
/* Configure the system clock to 180 MHz */
SystemClock_Config();
/* Initialize LED1, LED2 and LED3 */
BSP_LED_Init(LED1);
BSP_LED_Init(LED2);
BSP_LED_Init(LED3);
/*##-1- Configure the CRYP peripheral ######################################*/
/* Set the CRYP parameters */
CrypHandle.Instance = CRYP;
CrypHandle.Init.DataType = CRYP_DATATYPE_8B;
CrypHandle.Init.KeySize = CRYP_KEYSIZE_128B;
CrypHandle.Init.pKey = aAES128Key;
CrypHandle.Init.pInitVect = aNonce;
CrypHandle.Init.IVSize = uwNonceSize;
CrypHandle.Init.Header = aHeaderMessage;
CrypHandle.Init.HeaderSize = 16;
CrypHandle.Init.TagSize = 6;
CrypHandle.Init.pScratch = aHBuffer;
if(HAL_CRYP_Init(&CrypHandle) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/*##-2- Start the AES Encryption in CCM chaining mode ######################*/
if(HAL_CRYPEx_AESCCM_Encrypt(&CrypHandle, aPlaintext, PLAINTEXT_SIZE, aOutputText, 0xFF) != HAL_OK)
{
/* Encryption Error */
Error_Handler();
}
/*##-3- Compute the authentication TAG for AES CCM mode ####################*/
if(HAL_CRYPEx_AESCCM_Finish(&CrypHandle, aMAC, 0xFF) != HAL_OK)
{
/* TAG Error */
Error_Handler();
}
/*##-4- Compare the encrypted text and the aMAC with the expected ones #####*/
if( (memcmp(aOutputText, aExpectedCyphertext, PLAINTEXT_SIZE) != 0) || (memcmp(aMAC, aExpectedMAC, MAC_SIZE) != 0))
{
/* Wrong encryption: Turn LED2 on */
BSP_LED_On(LED2);
}
else
{
/* Right encryption: Turn LED1 on */
BSP_LED_On(LED1);
}
/* Infinite loop */
while(1)
{
}
}