1 // 2 // Copyright (C) 2015 The Android Open Source Project 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 // http://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 "tpm_manager/server/openssl_crypto_util_impl.h" 18 19 #include <base/logging.h> 20 #include <base/stl_util.h> 21 #include <openssl/rand.h> 22 23 namespace tpm_manager { 24 25 bool OpensslCryptoUtilImpl::GetRandomBytes(size_t num_bytes, 26 std::string* random_data) { 27 random_data->resize(num_bytes); 28 unsigned char* random_buffer = 29 reinterpret_cast<unsigned char*>(string_as_array(random_data)); 30 if (RAND_bytes(random_buffer, num_bytes) != 1) { 31 LOG(ERROR) << "Error getting random bytes using Openssl."; 32 random_data->clear(); 33 return false; 34 } 35 return true; 36 } 37 38 } // namespace tpm_manager 39
