1 /* 2 * Copyright (c) 2022 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #include "dslm_crypto.h" 17 18 #include <stddef.h> 19 #include <stdint.h> 20 21 #ifdef L2_STANDARD 22 #include "openssl/rand.h" 23 #endif 24 GenerateRandom(RandomValue * rand,uint32_t length)25void GenerateRandom(RandomValue *rand, uint32_t length) 26 { 27 if (rand == NULL) { 28 return; 29 } 30 rand->length = (length > RANDOM_MAX_LEN) ? RANDOM_MAX_LEN : length; 31 #ifdef L2_STANDARD 32 RAND_bytes(&rand->value[0], rand->length); 33 #else 34 rand->value[0] = 1; 35 #endif 36 } 37