mbed_trng.c

00001 /* mbed Microcontroller Library
00002  * Copyright (c) 2016 ARM Limited
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *     http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 
00017 #if defined(DEVICE_TRNG)
00018 
00019 #include "hal/trng_api.h"
00020 
00021 int mbedtls_hardware_poll( void *data, unsigned char *output, size_t len, size_t *olen ) {
00022     trng_t trng_obj;
00023     trng_init(&trng_obj);
00024     int ret = trng_get_bytes(&trng_obj, output, len, olen);
00025     trng_free(&trng_obj);
00026     return ret;
00027 }
00028 
00029 #endif