1 // Copyright 2017 Google Inc. 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_JSON_KEYSET_READER_H_ 18 #define TINK_JSON_KEYSET_READER_H_ 19 20 #include <istream> 21 #include <memory> 22 #include <string> 23 #include <utility> 24 25 #include "absl/strings/string_view.h" 26 #include "tink/keyset_reader.h" 27 #include "tink/util/statusor.h" 28 #include "proto/tink.pb.h" 29 30 namespace crypto { 31 namespace tink { 32 33 // A KeysetReader that can read from some source cleartext or 34 // encrypted keysets in proto JSON wire format, cf. 35 // https://developers.google.com/protocol-buffers/docs/encoding 36 class JsonKeysetReader : public KeysetReader { 37 public: 38 static crypto::tink::util::StatusOr<std::unique_ptr<KeysetReader>> New( 39 std::unique_ptr<std::istream> keyset_stream); 40 static crypto::tink::util::StatusOr<std::unique_ptr<KeysetReader>> New( 41 absl::string_view serialized_keyset); 42 43 crypto::tink::util::StatusOr<std::unique_ptr<google::crypto::tink::Keyset>> 44 Read() override; 45 46 crypto::tink::util::StatusOr< 47 std::unique_ptr<google::crypto::tink::EncryptedKeyset>> 48 ReadEncrypted() override; 49 50 private: JsonKeysetReader(std::unique_ptr<std::istream> keyset_stream)51 explicit JsonKeysetReader(std::unique_ptr<std::istream> keyset_stream) 52 : serialized_keyset_(""), keyset_stream_(std::move(keyset_stream)) {} JsonKeysetReader(absl::string_view serialized_keyset)53 explicit JsonKeysetReader(absl::string_view serialized_keyset) 54 : serialized_keyset_(serialized_keyset), keyset_stream_(nullptr) {} 55 56 std::string serialized_keyset_; 57 std::unique_ptr<std::istream> keyset_stream_; 58 }; 59 60 } // namespace tink 61 } // namespace crypto 62 63 #endif // TINK_JSON_KEYSET_READER_H_ 64