| // Copyright 2022 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/hybrid/internal/hpke_util.h" |
| |
| #include "gmock/gmock.h" |
| #include "gtest/gtest.h" |
| #include "tink/hybrid/internal/hpke_test_util.h" |
| #include "tink/util/test_matchers.h" |
| #include "proto/hpke.pb.h" |
| |
| namespace crypto { |
| namespace tink { |
| namespace internal { |
| namespace { |
| |
| using ::crypto::tink::test::IsOk; |
| using ::crypto::tink::test::IsOkAndHolds; |
| using ::crypto::tink::test::StatusIs; |
| using ::testing::Eq; |
| using ::testing::Values; |
| |
| struct HpkeParamsConversionTestCase { |
| google::crypto::tink::HpkeParams input; |
| HpkeParams expected; |
| }; |
| |
| using HpkeParamsConversionTest = |
| testing::TestWithParam<HpkeParamsConversionTestCase>; |
| |
| INSTANTIATE_TEST_SUITE_P( |
| HpkeParamsConversionTestSuite, HpkeParamsConversionTest, |
| Values( |
| HpkeParamsConversionTestCase{ |
| CreateHpkeParams(google::crypto::tink::DHKEM_X25519_HKDF_SHA256, |
| google::crypto::tink::HKDF_SHA256, |
| google::crypto::tink::AES_128_GCM), |
| HpkeParams{HpkeKem::kX25519HkdfSha256, HpkeKdf::kHkdfSha256, |
| HpkeAead::kAes128Gcm}}, |
| HpkeParamsConversionTestCase{ |
| CreateHpkeParams(google::crypto::tink::DHKEM_X25519_HKDF_SHA256, |
| google::crypto::tink::HKDF_SHA256, |
| google::crypto::tink::AES_256_GCM), |
| HpkeParams{HpkeKem::kX25519HkdfSha256, HpkeKdf::kHkdfSha256, |
| HpkeAead::kAes256Gcm}}, |
| HpkeParamsConversionTestCase{ |
| CreateHpkeParams(google::crypto::tink::DHKEM_X25519_HKDF_SHA256, |
| google::crypto::tink::HKDF_SHA256, |
| google::crypto::tink::CHACHA20_POLY1305), |
| HpkeParams{HpkeKem::kX25519HkdfSha256, HpkeKdf::kHkdfSha256, |
| HpkeAead::kChaCha20Poly1305}})); |
| |
| TEST_P(HpkeParamsConversionTest, HpkeParamsProtoToStruct) { |
| HpkeParamsConversionTestCase test_case = GetParam(); |
| util::StatusOr<HpkeParams> params = HpkeParamsProtoToStruct(test_case.input); |
| ASSERT_THAT(params, IsOk()); |
| |
| EXPECT_THAT(params->kem, Eq(test_case.expected.kem)); |
| EXPECT_THAT(params->kdf, Eq(test_case.expected.kdf)); |
| EXPECT_THAT(params->aead, Eq(test_case.expected.aead)); |
| } |
| |
| using HpkeBadParamsTest = |
| testing::TestWithParam<google::crypto::tink::HpkeParams>; |
| |
| INSTANTIATE_TEST_SUITE_P( |
| HpkeBadParamsTestSuite, HpkeBadParamsTest, |
| Values(CreateHpkeParams(google::crypto::tink::KEM_UNKNOWN, |
| google::crypto::tink::HKDF_SHA256, |
| google::crypto::tink::AES_128_GCM), |
| CreateHpkeParams(google::crypto::tink::DHKEM_X25519_HKDF_SHA256, |
| google::crypto::tink::KDF_UNKNOWN, |
| google::crypto::tink::AES_256_GCM), |
| CreateHpkeParams(google::crypto::tink::DHKEM_X25519_HKDF_SHA256, |
| google::crypto::tink::HKDF_SHA256, |
| google::crypto::tink::AEAD_UNKNOWN))); |
| |
| TEST_P(HpkeBadParamsTest, HpkeParamsProtoToStruct) { |
| google::crypto::tink::HpkeParams params = GetParam(); |
| EXPECT_THAT(HpkeParamsProtoToStruct(params).status(), |
| StatusIs(absl::StatusCode::kInvalidArgument)); |
| } |
| |
| TEST(HpkeKemEncodingSizeTest, HpkeEncapsulatedKeyLength) { |
| // Encapsulated key length should match 'Nenc' column from |
| // https://www.rfc-editor.org/rfc/rfc9180.html#section-7.1. |
| EXPECT_THAT( |
| HpkeEncapsulatedKeyLength(google::crypto::tink::DHKEM_X25519_HKDF_SHA256), |
| IsOkAndHolds(32)); |
| } |
| |
| } // namespace |
| } // namespace internal |
| } // namespace tink |
| } // namespace crypto |