| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| #include "examples/digital_signatures/cc/util.h" |
| |
| #include <iostream> |
| #include <fstream> |
| |
| #include "tink/binary_keyset_reader.h" |
| #include "tink/binary_keyset_writer.h" |
| #include "tink/cleartext_keyset_handle.h" |
| #include "tink/keyset_reader.h" |
| #include "tink/keyset_writer.h" |
| #include "tink/config.h" |
| #include "tink/keyset_handle.h" |
| #include "tink/config/tink_config.h" |
| #include "tink/util/status.h" |
| |
| using crypto::tink::BinaryKeysetReader; |
| using crypto::tink::BinaryKeysetWriter; |
| using crypto::tink::CleartextKeysetHandle; |
| using crypto::tink::KeysetHandle; |
| using crypto::tink::KeysetReader; |
| using crypto::tink::KeysetWriter; |
| using crypto::tink::TinkConfig; |
| |
| // static |
| std::unique_ptr<KeysetReader> Util::GetBinaryKeysetReader( |
| const std::string& filename) { |
| std::unique_ptr<std::ifstream> keyset_stream(new std::ifstream()); |
| keyset_stream->open(filename, std::ifstream::in); |
| auto keyset_reader_result = BinaryKeysetReader::New(std::move(keyset_stream)); |
| if (!keyset_reader_result.ok()) { |
| std::clog << "Creation of the BinaryKeysetReader failed: " |
| << keyset_reader_result.status().error_message() << std::endl; |
| exit(1); |
| } |
| return std::move(keyset_reader_result.ValueOrDie()); |
| } |
| |
| // static |
| std::unique_ptr<KeysetWriter> Util::GetBinaryKeysetWriter( |
| const std::string& filename) { |
| std::unique_ptr<std::ofstream> keyset_stream(new std::ofstream()); |
| keyset_stream->open(filename, std::ofstream::out); |
| auto keyset_writer_result = BinaryKeysetWriter::New(std::move(keyset_stream)); |
| if (!keyset_writer_result.ok()) { |
| std::clog << "Creation of the BinaryKeysetWriter failed: " |
| << keyset_writer_result.status().error_message() << std::endl; |
| exit(1); |
| } |
| return std::move(keyset_writer_result.ValueOrDie()); |
| } |
| |
| // static |
| std::unique_ptr<KeysetHandle> Util::ReadKeyset(const std::string& filename) { |
| auto keyset_reader = GetBinaryKeysetReader(filename); |
| auto keyset_handle_result = |
| CleartextKeysetHandle::Read(std::move(keyset_reader)); |
| if (!keyset_handle_result.ok()) { |
| std::clog << "Reading the keyset failed: " |
| << keyset_handle_result.status().error_message() << std::endl; |
| exit(1); |
| } |
| return std::move(keyset_handle_result.ValueOrDie()); |
| } |
| |
| // static |
| void Util::WriteKeyset( |
| const std::unique_ptr<KeysetHandle>& keyset_handle, |
| const std::string& filename) { |
| auto keyset_writer = GetBinaryKeysetWriter(filename); |
| auto status = CleartextKeysetHandle::Write(keyset_writer.get(), |
| *keyset_handle); |
| if (!status.ok()) { |
| std::clog << "Writing the keyset failed: " |
| << status.error_message() << std::endl; |
| exit(1); |
| } |
| } |
| |
| // static |
| void Util::InitTink() { |
| auto status = TinkConfig::Register(); |
| if (!status.ok()) { |
| std::clog << "Initialization of Tink failed: " |
| << status.error_message() << std::endl; |
| exit(1); |
| } |
| } |
| |
| // static |
| std::string Util::Read(const std::string& filename) { |
| std::ifstream input_stream; |
| input_stream.open(filename, std::ifstream::in); |
| if (!input_stream.is_open()) { |
| std::clog << "Error opening input file " << filename << std::endl; |
| exit(1); |
| } |
| std::stringstream input; |
| input << input_stream.rdbuf(); |
| input_stream.close(); |
| return input.str(); |
| } |
| |
| // static |
| void Util::Write(const std::string& output, |
| const std::string& filename) { |
| std::ofstream output_stream(filename, |
| std::ofstream::out | std::ofstream::binary); |
| if (!output_stream.is_open()) { |
| std::clog << "Error opening output file " << filename << std::endl; |
| exit(1); |
| } |
| output_stream << output; |
| output_stream.close(); |
| } |