| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| #include "os/mynewt.h" |
| |
| #if MYNEWT_VAL(TINYCRYPT_UECC_RNG_USE_TRNG) |
| |
| #include "tinycrypt/ecc.h" |
| #include "trng/trng.h" |
| |
| static struct trng_dev *g_trng; |
| |
| static int |
| uecc_rng_trng(uint8_t *dst, unsigned int size) |
| { |
| size_t num; |
| |
| while (size) { |
| num = trng_read(g_trng, dst, size); |
| dst += num; |
| size -= num; |
| } |
| |
| return 1; |
| } |
| |
| void |
| mynewt_tinycrypt_pkg_init(void) |
| { |
| g_trng = (struct trng_dev *)os_dev_open(MYNEWT_VAL(TINYCRYPT_UECC_RNG_TRNG_DEV_NAME), |
| OS_WAIT_FOREVER, NULL); |
| assert(g_trng); |
| uECC_set_rng(uecc_rng_trng); |
| } |
| |
| #endif |