1 /* 2 * Copyright 2018 Google LLC 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * https://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "fcp/secagg/shared/crypto_rand_prng.h" 18 19 #include <cstdint> 20 21 #include "fcp/base/monitoring.h" 22 #include "fcp/secagg/shared/prng.h" 23 #include "openssl/rand.h" 24 25 namespace fcp { 26 namespace secagg { 27 28 template <typename Output> Rand()29static Output Rand() { 30 Output output; 31 uint8_t bytes[sizeof(output)]; 32 FCP_CHECK(RAND_bytes(bytes, sizeof(output))); 33 memcpy(&output, bytes, sizeof(output)); 34 return output; 35 } 36 Rand8()37uint8_t CryptoRandPrng::Rand8() { return Rand<uint8_t>(); } Rand64()38uint64_t CryptoRandPrng::Rand64() { return Rand<uint64_t>(); } 39 40 } // namespace secagg 41 } // namespace fcp 42