https://github.com/google/tink
Tip revision: a8ec74d083068cd5e1ebed86fd8254630617b592 authored by Thai Duong on 14 July 2020, 08:36:23 UTC
Merge branch '1.4' of github.com:google/tink into 1.4
Merge branch '1.4' of github.com:google/tink into 1.4
Tip revision: a8ec74d
hmac_key_manager.h
// 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_MAC_HMAC_KEY_MANAGER_H_
#define TINK_MAC_HMAC_KEY_MANAGER_H_
#include <string>
#include "absl/memory/memory.h"
#include "absl/strings/str_cat.h"
#include "tink/core/key_type_manager.h"
#include "tink/mac.h"
#include "tink/subtle/hmac_boringssl.h"
#include "tink/util/constants.h"
#include "tink/util/enums.h"
#include "tink/util/errors.h"
#include "tink/util/protobuf_helper.h"
#include "tink/util/secret_data.h"
#include "tink/util/status.h"
#include "tink/util/statusor.h"
#include "proto/hmac.pb.h"
#include "proto/tink.pb.h"
namespace crypto {
namespace tink {
class HmacKeyManager
: public KeyTypeManager<google::crypto::tink::HmacKey,
google::crypto::tink::HmacKeyFormat, List<Mac>> {
public:
class MacFactory : public PrimitiveFactory<Mac> {
crypto::tink::util::StatusOr<std::unique_ptr<Mac>> Create(
const google::crypto::tink::HmacKey& hmac_key) const override {
return subtle::HmacBoringSsl::New(
util::Enums::ProtoToSubtle(hmac_key.params().hash()),
hmac_key.params().tag_size(),
util::SecretDataFromStringView(hmac_key.key_value()));
}
};
HmacKeyManager() : KeyTypeManager(absl::make_unique<MacFactory>()) {}
uint32_t get_version() const override { return 0; }
google::crypto::tink::KeyData::KeyMaterialType key_material_type()
const override {
return google::crypto::tink::KeyData::SYMMETRIC;
}
const std::string& get_key_type() const override { return key_type_; }
crypto::tink::util::Status ValidateKey(
const google::crypto::tink::HmacKey& key) const override;
crypto::tink::util::Status ValidateKeyFormat(
const google::crypto::tink::HmacKeyFormat& key_format) const override;
crypto::tink::util::StatusOr<google::crypto::tink::HmacKey> CreateKey(
const google::crypto::tink::HmacKeyFormat& key_format) const override;
crypto::tink::util::StatusOr<google::crypto::tink::HmacKey> DeriveKey(
const google::crypto::tink::HmacKeyFormat& key_format,
InputStream* input_stream) const override;
private:
crypto::tink::util::Status ValidateParams(
const google::crypto::tink::HmacParams& params) const;
const std::string key_type_ = absl::StrCat(
kTypeGoogleapisCom, google::crypto::tink::HmacKey().GetTypeName());
};
} // namespace tink
} // namespace crypto
#endif // TINK_MAC_HMAC_KEY_MANAGER_H_