// Copyright 2023 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/config/key_gen_fips_140_2.h"

#include <memory>

#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "tink/aead/aead_key_templates.h"
#include "tink/aead/aes_ctr_hmac_aead_key_manager.h"
#include "tink/aead/aes_gcm_key_manager.h"
#include "tink/internal/fips_utils.h"
#include "tink/internal/key_gen_configuration_impl.h"
#include "tink/mac/aes_cmac_key_manager.h"
#include "tink/mac/hmac_key_manager.h"
#include "tink/prf/hmac_prf_key_manager.h"
#include "tink/signature/ecdsa_verify_key_manager.h"
#include "tink/signature/rsa_ssa_pkcs1_verify_key_manager.h"
#include "tink/signature/rsa_ssa_pss_verify_key_manager.h"
#include "tink/util/test_matchers.h"
#include "proto/tink.pb.h"

namespace crypto {
namespace tink {
namespace {

using ::crypto::tink::test::IsOk;
using ::crypto::tink::test::StatusIs;
using ::google::crypto::tink::KeyData;
using ::google::crypto::tink::KeyTemplate;

class KeyGenFips1402Test : public testing::Test {
 protected:
  void TearDown() override { internal::UnSetFipsRestricted(); }
};

TEST_F(KeyGenFips1402Test, KeyGenConfigFips1402) {
  if (!internal::IsFipsEnabledInSsl()) {
    GTEST_SKIP() << "Only test in FIPS mode";
  }

  util::StatusOr<const internal::KeyTypeInfoStore*> store =
      internal::KeyGenConfigurationImpl::GetKeyTypeInfoStore(
          KeyGenConfigFips140_2());
  ASSERT_THAT(store, IsOk());

  EXPECT_THAT((*store)->Get(HmacKeyManager().get_key_type()), IsOk());
  EXPECT_THAT((*store)->Get(AesCtrHmacAeadKeyManager().get_key_type()), IsOk());
  EXPECT_THAT((*store)->Get(AesGcmKeyManager().get_key_type()), IsOk());
  EXPECT_THAT((*store)->Get(HmacPrfKeyManager().get_key_type()), IsOk());
  EXPECT_THAT((*store)->Get(EcdsaVerifyKeyManager().get_key_type()), IsOk());
  EXPECT_THAT((*store)->Get(RsaSsaPssVerifyKeyManager().get_key_type()),
              IsOk());
  EXPECT_THAT((*store)->Get(RsaSsaPkcs1VerifyKeyManager().get_key_type()),
              IsOk());
}

TEST_F(KeyGenFips1402Test, KeyGenConfigFips1402FailsInNonFipsMode) {
  if (internal::IsFipsEnabledInSsl()) {
    GTEST_SKIP() << "Only test in non-FIPS mode";
  }

  EXPECT_DEATH_IF_SUPPORTED(
      KeyGenConfigFips140_2(),
      "BoringSSL not built with the BoringCrypto module.");
}

TEST_F(KeyGenFips1402Test, NonFipsTypeNotPresent) {
  if (!internal::IsFipsEnabledInSsl()) {
    GTEST_SKIP() << "Only test in FIPS mode";
  }

  util::StatusOr<const internal::KeyTypeInfoStore*> store =
      internal::KeyGenConfigurationImpl::GetKeyTypeInfoStore(
          KeyGenConfigFips140_2());
  ASSERT_THAT(store, IsOk());
  EXPECT_THAT((*store)->Get(AesCmacKeyManager().get_key_type()).status(),
              StatusIs(absl::StatusCode::kNotFound));
}

TEST_F(KeyGenFips1402Test, NewKeyData) {
  if (!internal::IsFipsEnabledInSsl()) {
    GTEST_SKIP() << "Only test in FIPS mode";
  }

  // TODO(b/265705174): Replace with KeysetHandle::GenerateNew once that takes a
  // config parameter.
  util::StatusOr<const internal::KeyTypeInfoStore*> store =
      internal::KeyGenConfigurationImpl::GetKeyTypeInfoStore(
          KeyGenConfigFips140_2());
  ASSERT_THAT(store, IsOk());
  KeyTemplate templ = AeadKeyTemplates::Aes128Gcm();
  util::StatusOr<internal::KeyTypeInfoStore::Info*> info =
      (*store)->Get(templ.type_url());
  ASSERT_THAT(info, IsOk());

  util::StatusOr<std::unique_ptr<KeyData>> key_data =
      (*info)->key_factory().NewKeyData(templ.value());
  EXPECT_THAT(key_data, IsOk());
}

}  // namespace
}  // namespace tink
}  // namespace crypto