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// Copyright 2017 Google Inc.
//
// 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.
//
///////////////////////////////////////////////////////////////////////////////
#ifndef TINK_JSON_KEYSET_READER_H_
#define TINK_JSON_KEYSET_READER_H_
#include <istream>
#include <memory>
#include <string>
#include <utility>
#include "absl/strings/string_view.h"
#include "tink/keyset_reader.h"
#include "tink/util/statusor.h"
#include "proto/tink.pb.h"
namespace crypto {
namespace tink {
// A KeysetReader that can read from some source cleartext or
// encrypted keysets in proto JSON wire format, cf.
// https://developers.google.com/protocol-buffers/docs/encoding
class JsonKeysetReader : public KeysetReader {
public:
static crypto::tink::util::StatusOr<std::unique_ptr<KeysetReader>> New(
std::unique_ptr<std::istream> keyset_stream);
static crypto::tink::util::StatusOr<std::unique_ptr<KeysetReader>> New(
absl::string_view serialized_keyset);
crypto::tink::util::StatusOr<std::unique_ptr<google::crypto::tink::Keyset>>
Read() override;
crypto::tink::util::StatusOr<
std::unique_ptr<google::crypto::tink::EncryptedKeyset>>
ReadEncrypted() override;
private:
explicit JsonKeysetReader(std::unique_ptr<std::istream> keyset_stream)
: serialized_keyset_(""), keyset_stream_(std::move(keyset_stream)) {}
explicit JsonKeysetReader(absl::string_view serialized_keyset)
: serialized_keyset_(serialized_keyset), keyset_stream_(nullptr) {}
std::string serialized_keyset_;
std::unique_ptr<std::istream> keyset_stream_;
};
} // namespace tink
} // namespace crypto
#endif // TINK_JSON_KEYSET_READER_H_
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