/**
******************************************************************************
* @file hardware_rng.c
* @author MCD Application Team
* @version V1.1.0
* @date 17-February-2017
* @brief mbedtls entropy data generator using the HAL_RNG API.
******************************************************************************
* @attention
*
*
© COPYRIGHT(c) 2017 STMicroelectronics
*
* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.st.com/software_license_agreement_liberty_v2
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************
*/
#include "mbedtls_config.h"
#include "rng.h"
#ifdef MBEDTLS_ENTROPY_HARDWARE_ALT
#include "main.h"
#include
#include "mbedtls/entropy_poll.h"
int mbedtls_hardware_poll( void *Data, unsigned char *Output, size_t Len, size_t *oLen )
{
uint32_t index;
uint32_t randomValue;
for (index = 0; index < Len/4; index++)
{
randomValue = GetRandomNumber();
*oLen += 4;
memset(&(Output[index * 4]), (int)randomValue, 4);
}
return 0;
}
#endif /*MBEDTLS_ENTROPY_HARDWARE_ALT*/