1 // Copyright 2019 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 #ifndef TINK_UTIL_INPUT_STREAM_UTIL_H_ 18 #define TINK_UTIL_INPUT_STREAM_UTIL_H_ 19 20 #include <string> 21 22 #include "tink/input_stream.h" 23 #include "tink/util/secret_data.h" 24 #include "tink/util/statusor.h" 25 26 namespace crypto { 27 namespace tink { 28 29 // A utility function which reads num_bytes from the given input stream, calling 30 // Next repeatedly until 'num_bytes' are obtained. All stream errors are 31 // propagated. This can loop indefinitely (in case Next() repeatedly returns 0). 32 util::StatusOr<std::string> ReadBytesFromStream(int num_bytes, 33 InputStream* input_stream); 34 // A SecretData variant of ReadBytesFromStream 35 util::StatusOr<util::SecretData> ReadSecretBytesFromStream( 36 int num_bytes, InputStream* input_stream); 37 38 } // namespace tink 39 } // namespace crypto 40 41 #endif // TINK_UTIL_INPUT_STREAM_UTIL_H_ 42