1 // Copyright 2022 Google LLC 2 // 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 17 #include "tink/restricted_data.h" 18 19 #include <iostream> 20 21 #include "absl/log/check.h" 22 #include "openssl/crypto.h" 23 #include "tink/subtle/random.h" 24 #include "tink/util/secret_data.h" 25 26 namespace crypto { 27 namespace tink { 28 RestrictedData(int64_t num_random_bytes)29RestrictedData::RestrictedData(int64_t num_random_bytes) { 30 CHECK_GE(num_random_bytes, 0) 31 << "Cannot generate a negative number of random bytes.\n"; 32 secret_ = util::SecretDataFromStringView( 33 subtle::Random::GetRandomBytes(num_random_bytes)); 34 } 35 operator ==(const RestrictedData & other) const36bool RestrictedData::operator==(const RestrictedData& other) const { 37 if (secret_.size() != other.secret_.size()) { 38 return false; 39 } 40 return CRYPTO_memcmp(secret_.data(), other.secret_.data(), secret_.size()) == 41 0; 42 } 43 44 } // namespace tink 45 } // namespace crypto 46