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 #ifndef TPM_MANAGER_SERVER_OPENSSL_CRYPTO_UTIL_H_ 18 #define TPM_MANAGER_SERVER_OPENSSL_CRYPTO_UTIL_H_ 19 20 #include <string> 21 22 #include <base/compiler_specific.h> 23 #include <base/macros.h> 24 25 namespace tpm_manager { 26 27 // This class is used to provide a mockable interface for openssl calls. 28 class OpensslCryptoUtil { 29 public: 30 OpensslCryptoUtil() = default; 31 virtual ~OpensslCryptoUtil() = default; 32 33 // This method sets the out argument |random_data| to a string with at 34 // least |num_bytes| of random data and returns true on success. 35 virtual bool GetRandomBytes(size_t num_bytes, 36 std::string* random_data) WARN_UNUSED_RESULT = 0; 37 38 private: 39 DISALLOW_COPY_AND_ASSIGN(OpensslCryptoUtil); 40 }; 41 42 } // namespace tpm_manager 43 44 #endif // TPM_MANAGER_SERVER_OPENSSL_CRYPTO_UTIL_H_ 45