* Copyright (c) 2021 Bestechnic (Shanghai) Co., Ltd. All rights reserved.
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* 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.
*/
#if !defined(MBEDTLS_CONFIG_FILE)
#include "mbedtls/config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
#include <string.h>
#if defined(MBEDTLS_ENTROPY_C)
#include "mbedtls/entropy.h"
#include "entropy_poll.h"
#if defined(MBEDTLS_TEST_NULL_ENTROPY)
#include "stdlib.h"
#include "hal_trng.h"
int mbedtls_null_entropy_poll( void *data,
unsigned char *output, size_t len, size_t *olen )
{
((void) data);
((void) output);
int ret;
uint32_t i;
len = len > HAL_TRNG_DATA_LEN ? HAL_TRNG_DATA_LEN : len;
ret = hal_get_trngdata(output, len);
if (ret) {
for (i = 0; i < len; i++) {
output[i] = rand() & 0xFF;
}
}
*olen = len;
return( 0 );
}
#endif
#endif
