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// Copyright 2020 Google LLC
//
// 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 "tink/keyderivation/key_derivation_config.h"
#include <memory>
#include <string>
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "tink/aead/aead_config.h"
#include "tink/aead/aead_key_templates.h"
#include "tink/aead/aes_gcm_key_manager.h"
#include "tink/keyderivation/key_derivation_key_templates.h"
#include "tink/keyderivation/keyset_deriver.h"
#include "tink/prf/prf_key_templates.h"
#include "tink/registry.h"
#include "tink/util/statusor.h"
#include "tink/util/test_matchers.h"
namespace crypto {
namespace tink {
namespace {
using ::crypto::tink::test::IsOk;
using ::testing::Not;
TEST(KeyDerivationConfigTest, Register) {
Registry::Reset();
EXPECT_THAT(KeyDerivationKeyTemplates::CreatePrfBasedKeyTemplate(
PrfKeyTemplates::HkdfSha256(), AeadKeyTemplates::Aes256Gcm()),
Not(IsOk()));
ASSERT_THAT(KeyDerivationConfig::Register(), IsOk());
ASSERT_THAT(AeadConfig::Register(), IsOk());
ASSERT_THAT(Registry::RegisterKeyTypeManager(
absl::make_unique<AesGcmKeyManager>(), true),
IsOk());
util::StatusOr<::google::crypto::tink::KeyTemplate> templ =
KeyDerivationKeyTemplates::CreatePrfBasedKeyTemplate(
PrfKeyTemplates::HkdfSha256(), AeadKeyTemplates::Aes256Gcm());
ASSERT_THAT(templ, IsOk());
util::StatusOr<std::unique_ptr<KeysetHandle>> handle =
KeysetHandle::GenerateNew(*templ);
ASSERT_THAT(handle, IsOk());
util::StatusOr<std::unique_ptr<KeysetDeriver>> deriver =
(*handle)->GetPrimitive<KeysetDeriver>();
ASSERT_THAT(deriver, IsOk());
util::StatusOr<std::unique_ptr<KeysetHandle>> derived_handle =
(*deriver)->DeriveKeyset("salty");
ASSERT_THAT(derived_handle, IsOk());
util::StatusOr<std::unique_ptr<Aead>> aead =
(*derived_handle)->GetPrimitive<Aead>();
ASSERT_THAT(aead, IsOk());
std::string plaintext = "plaintext";
std::string ad = "ad";
util::StatusOr<std::string> ciphertext = (*aead)->Encrypt(plaintext, ad);
ASSERT_THAT(ciphertext, IsOk());
util::StatusOr<std::string> got = (*aead)->Decrypt(*ciphertext, ad);
ASSERT_THAT(got, IsOk());
EXPECT_EQ(plaintext, *got);
}
} // namespace
} // namespace tink
} // namespace crypto
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