int mbedtls_md5_finish_ret( mbedtls_md5_context *ctx, unsigned char output[16] )
{
if (st_md5_restore_hw_context(ctx) != 1) {
// Return HASH_BUSY timeout error here
return MBEDTLS_ERR_MD5_HW_ACCEL_FAILED;
}
/* Last accumulation for extra bytes in sbuf_len */
/* This sets HW flags in case mbedtls_md5_update has not been called yet */
if (HAL_HASH_MD5_Accumulate(&ctx->hhash_md5, ctx->sbuf, ctx->sbuf_len) != 0) {
return MBEDTLS_ERR_MD5_HW_ACCEL_FAILED;
}
mbedtls_zeroize( ctx->sbuf, ST_MD5_BLOCK_SIZE);
ctx->sbuf_len = 0;
__HAL_HASH_START_DIGEST();
if (HAL_HASH_MD5_Finish(&ctx->hhash_md5, output, 10)) {
return MBEDTLS_ERR_MD5_HW_ACCEL_FAILED;
}
if (st_md5_save_hw_context(ctx) != 1) {
// Return HASH_BUSY timeout error here
return MBEDTLS_ERR_MD5_HW_ACCEL_FAILED;
}
return 0;
}
/**
* @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();
/* Configure LED1, LED3 and LED4 */
BSP_LED_Init(LED1);
BSP_LED_Init(LED3);
BSP_LED_Init(LED4);
/****************************************************************************/
/******************************** SHA1 **************************************/
/****************************************************************************/
HAL_HASH_DeInit(&HashHandle);
HashHandle.Init.DataType = HASH_DATATYPE_8B;
if(HAL_HASH_Init(&HashHandle) != HAL_OK)
{
Error_Handler();
}
/* Start HASH computation using DMA transfer */
HAL_HASH_SHA1_Start_DMA(&HashHandle, (uint8_t*)aInput, strlen((char const*)aInput));
while (HAL_HASH_GetState(&HashHandle) == HAL_HASH_STATE_BUSY);
/* Get the computed digest value */
HAL_HASH_SHA1_Finish(&HashHandle, aSHA1Digest, 0xFF);
while (HAL_HASH_GetState(&HashHandle) == HAL_HASH_STATE_BUSY);
/* Compare computed digest with expected one */
if(memcmp(aSHA1Digest, aExpectSHA1Digest, sizeof(aExpectSHA1Digest)/sizeof(aExpectSHA1Digest[0])) != 0)
{
Error_Handler();
}
else
{
BSP_LED_On(LED1);
}
/****************************************************************************/
/******************************** MD5 ***************************************/
/****************************************************************************/
HAL_HASH_DeInit(&HashHandle);
HashHandle.Init.DataType = HASH_DATATYPE_8B;
if(HAL_HASH_Init(&HashHandle) != HAL_OK)
{
Error_Handler();
}
/* Start HASH computation using DMA transfer */
HAL_HASH_MD5_Start_DMA(&HashHandle, (uint8_t*)aInput, strlen((char const*)aInput));
while (HAL_HASH_GetState(&HashHandle) == HAL_HASH_STATE_BUSY);
/* Get the computed digest value */
HAL_HASH_MD5_Finish(&HashHandle, aMD5Digest, 0xFF);
while (HAL_HASH_GetState(&HashHandle) == HAL_HASH_STATE_BUSY);
/* Compare computed digest with expected one */
if(memcmp(aMD5Digest, aExpectMD5Digest, sizeof(aExpectMD5Digest)/sizeof(aExpectMD5Digest[0])) != 0)
{
Error_Handler();
}
else
{
BSP_LED_On(LED4);
}
while(1)
{
}
}
