| // Copyright 2017 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/aead/aes_gcm_key_manager.h" |
| |
| #include <stdint.h> |
| |
| #include <memory> |
| #include <sstream> |
| #include <string> |
| |
| #include "gmock/gmock.h" |
| #include "gtest/gtest.h" |
| #include "absl/memory/memory.h" |
| #include "absl/status/status.h" |
| #include "tink/aead.h" |
| #include "tink/aead/cord_aead.h" |
| #include "tink/aead/internal/cord_aes_gcm_boringssl.h" |
| #include "tink/subtle/aead_test_util.h" |
| #include "tink/subtle/aes_gcm_boringssl.h" |
| #include "tink/util/istream_input_stream.h" |
| #include "tink/util/secret_data.h" |
| #include "tink/util/status.h" |
| #include "tink/util/statusor.h" |
| #include "tink/util/test_matchers.h" |
| #include "proto/aes_gcm.pb.h" |
| #include "proto/tink.pb.h" |
| |
| namespace crypto { |
| namespace tink { |
| |
| namespace { |
| |
| using ::crypto::tink::internal::CordAesGcmBoringSsl; |
| using ::crypto::tink::test::IsOk; |
| using ::crypto::tink::test::StatusIs; |
| using ::crypto::tink::util::IstreamInputStream; |
| using ::crypto::tink::util::StatusOr; |
| using ::google::crypto::tink::AesGcmKey; |
| using ::google::crypto::tink::AesGcmKeyFormat; |
| using ::testing::Eq; |
| using ::testing::HasSubstr; |
| |
| TEST(AesGcmKeyManagerTest, Basics) { |
| EXPECT_THAT(AesGcmKeyManager().get_version(), Eq(0)); |
| EXPECT_THAT(AesGcmKeyManager().get_key_type(), |
| Eq("type.googleapis.com/google.crypto.tink.AesGcmKey")); |
| EXPECT_THAT(AesGcmKeyManager().key_material_type(), |
| Eq(google::crypto::tink::KeyData::SYMMETRIC)); |
| } |
| |
| TEST(AesGcmKeyManagerTest, ValidateEmptyKey) { |
| EXPECT_THAT(AesGcmKeyManager().ValidateKey(AesGcmKey()), |
| StatusIs(absl::StatusCode::kInvalidArgument)); |
| } |
| |
| TEST(AesGcmKeyManagerTest, ValidateValid16ByteKey) { |
| AesGcmKey key; |
| key.set_version(0); |
| key.set_key_value("0123456789abcdef"); |
| EXPECT_THAT(AesGcmKeyManager().ValidateKey(key), IsOk()); |
| } |
| |
| TEST(AesGcmKeyManagerTest, ValidateValid32ByteKey) { |
| AesGcmKey key; |
| key.set_version(0); |
| key.set_key_value("01234567890123456789012345678901"); |
| EXPECT_THAT(AesGcmKeyManager().ValidateKey(key), IsOk()); |
| } |
| |
| TEST(AesGcmKeyManagerTest, InvalidKeySizes15Bytes) { |
| AesGcmKey key; |
| key.set_version(0); |
| key.set_key_value("0123456789abcde"); |
| EXPECT_THAT(AesGcmKeyManager().ValidateKey(key), |
| StatusIs(absl::StatusCode::kInvalidArgument)); |
| } |
| |
| TEST(AesGcmKeyManagerTest, InvalidKeySizes17Bytes) { |
| AesGcmKey key; |
| key.set_version(0); |
| key.set_key_value("0123456789abcdefg"); |
| EXPECT_THAT(AesGcmKeyManager().ValidateKey(key), |
| StatusIs(absl::StatusCode::kInvalidArgument)); |
| } |
| |
| TEST(AesGcmKeyManagerTest, InvalidKeySizes24Bytes) { |
| AesGcmKey key; |
| key.set_version(0); |
| key.set_key_value("01234567890123"); |
| EXPECT_THAT(AesGcmKeyManager().ValidateKey(key), |
| StatusIs(absl::StatusCode::kInvalidArgument)); |
| } |
| |
| TEST(AesGcmKeyManagerTest, InvalidKeySizes31Bytes) { |
| AesGcmKey key; |
| key.set_version(0); |
| key.set_key_value("0123456789012345678901234567890"); |
| EXPECT_THAT(AesGcmKeyManager().ValidateKey(key), |
| StatusIs(absl::StatusCode::kInvalidArgument)); |
| } |
| |
| TEST(AesGcmKeyManagerTest, InvalidKeySizes33Bytes) { |
| AesGcmKey key; |
| key.set_version(0); |
| key.set_key_value("012345678901234567890123456789012"); |
| EXPECT_THAT(AesGcmKeyManager().ValidateKey(key), |
| StatusIs(absl::StatusCode::kInvalidArgument)); |
| } |
| |
| TEST(AesGcmKeyManagerTest, ValidateKeyFormat) { |
| AesGcmKeyFormat format; |
| |
| format.set_key_size(0); |
| EXPECT_THAT(AesGcmKeyManager().ValidateKeyFormat(format), |
| StatusIs(absl::StatusCode::kInvalidArgument)); |
| |
| format.set_key_size(1); |
| EXPECT_THAT(AesGcmKeyManager().ValidateKeyFormat(format), |
| StatusIs(absl::StatusCode::kInvalidArgument)); |
| |
| format.set_key_size(15); |
| EXPECT_THAT(AesGcmKeyManager().ValidateKeyFormat(format), |
| StatusIs(absl::StatusCode::kInvalidArgument)); |
| |
| format.set_key_size(16); |
| EXPECT_THAT(AesGcmKeyManager().ValidateKeyFormat(format), IsOk()); |
| |
| format.set_key_size(17); |
| EXPECT_THAT(AesGcmKeyManager().ValidateKeyFormat(format), |
| StatusIs(absl::StatusCode::kInvalidArgument)); |
| |
| format.set_key_size(31); |
| EXPECT_THAT(AesGcmKeyManager().ValidateKeyFormat(format), |
| StatusIs(absl::StatusCode::kInvalidArgument)); |
| |
| format.set_key_size(32); |
| EXPECT_THAT(AesGcmKeyManager().ValidateKeyFormat(format), IsOk()); |
| |
| format.set_key_size(33); |
| EXPECT_THAT(AesGcmKeyManager().ValidateKeyFormat(format), |
| StatusIs(absl::StatusCode::kInvalidArgument)); |
| } |
| |
| TEST(AesGcmKeyManagerTest, Create16ByteKey) { |
| AesGcmKeyFormat format; |
| format.set_key_size(16); |
| |
| StatusOr<AesGcmKey> key_or = AesGcmKeyManager().CreateKey(format); |
| |
| ASSERT_THAT(key_or, IsOk()); |
| EXPECT_THAT(key_or.value().key_value().size(), Eq(format.key_size())); |
| } |
| |
| TEST(AesGcmKeyManagerTest, Create32ByteKey) { |
| AesGcmKeyFormat format; |
| format.set_key_size(32); |
| |
| StatusOr<AesGcmKey> key_or = AesGcmKeyManager().CreateKey(format); |
| |
| ASSERT_THAT(key_or, IsOk()); |
| EXPECT_THAT(key_or.value().key_value().size(), Eq(format.key_size())); |
| } |
| |
| TEST(AesGcmKeyManagerTest, CreateAead) { |
| AesGcmKeyFormat format; |
| format.set_key_size(32); |
| StatusOr<AesGcmKey> key_or = AesGcmKeyManager().CreateKey(format); |
| ASSERT_THAT(key_or, IsOk()); |
| |
| StatusOr<std::unique_ptr<Aead>> aead_or = |
| AesGcmKeyManager().GetPrimitive<Aead>(key_or.value()); |
| |
| ASSERT_THAT(aead_or, IsOk()); |
| |
| StatusOr<std::unique_ptr<Aead>> boring_ssl_aead_or = |
| subtle::AesGcmBoringSsl::New( |
| util::SecretDataFromStringView(key_or.value().key_value())); |
| ASSERT_THAT(boring_ssl_aead_or, IsOk()); |
| |
| ASSERT_THAT(EncryptThenDecrypt(*aead_or.value(), *boring_ssl_aead_or.value(), |
| "message", "aad"), |
| IsOk()); |
| } |
| |
| TEST(AesGcmKeyManagerTest, CreateCordAead) { |
| AesGcmKeyFormat format; |
| format.set_key_size(32); |
| StatusOr<AesGcmKey> key_or = AesGcmKeyManager().CreateKey(format); |
| ASSERT_THAT(key_or, IsOk()); |
| |
| StatusOr<std::unique_ptr<CordAead>> aead_or = |
| AesGcmKeyManager().GetPrimitive<CordAead>(key_or.value()); |
| |
| ASSERT_THAT(aead_or, IsOk()); |
| |
| StatusOr<std::unique_ptr<CordAead>> boring_ssl_aead_or = |
| CordAesGcmBoringSsl::New( |
| util::SecretDataFromStringView(key_or.value().key_value())); |
| ASSERT_THAT(boring_ssl_aead_or, IsOk()); |
| |
| ASSERT_THAT(EncryptThenDecrypt(*aead_or.value(), *boring_ssl_aead_or.value(), |
| "message", "aad"), |
| IsOk()); |
| } |
| |
| TEST(AesGcmKeyManagerTest, DeriveShortKey) { |
| AesGcmKeyFormat format; |
| format.set_key_size(16); |
| format.set_version(0); |
| |
| IstreamInputStream input_stream{ |
| absl::make_unique<std::stringstream>("0123456789abcdefghijklmnop")}; |
| |
| StatusOr<AesGcmKey> key_or = |
| AesGcmKeyManager().DeriveKey(format, &input_stream); |
| ASSERT_THAT(key_or, IsOk()); |
| EXPECT_THAT(key_or.value().key_value(), Eq("0123456789abcdef")); |
| } |
| |
| TEST(AesGcmKeyManagerTest, DeriveLongKey) { |
| AesGcmKeyFormat format; |
| format.set_key_size(32); |
| format.set_version(0); |
| |
| IstreamInputStream input_stream{absl::make_unique<std::stringstream>( |
| "0123456789abcdef0123456789abcdefXXX")}; |
| |
| StatusOr<AesGcmKey> key_or = |
| AesGcmKeyManager().DeriveKey(format, &input_stream); |
| ASSERT_THAT(key_or, IsOk()); |
| EXPECT_THAT(key_or.value().key_value(), |
| Eq("0123456789abcdef0123456789abcdef")); |
| } |
| |
| TEST(AesGcmKeyManagerTest, DeriveKeyNotEnoughRandomness) { |
| AesGcmKeyFormat format; |
| format.set_key_size(16); |
| format.set_version(0); |
| |
| IstreamInputStream input_stream{ |
| absl::make_unique<std::stringstream>("0123456789")}; |
| |
| ASSERT_THAT(AesGcmKeyManager().DeriveKey(format, &input_stream).status(), |
| StatusIs(absl::StatusCode::kInvalidArgument)); |
| } |
| |
| TEST(AesGcmKeyManagerTest, DeriveKeyWrongVersion) { |
| AesGcmKeyFormat format; |
| format.set_key_size(16); |
| format.set_version(1); |
| |
| IstreamInputStream input_stream{ |
| absl::make_unique<std::stringstream>("0123456789abcdefghijklmnop")}; |
| |
| ASSERT_THAT( |
| AesGcmKeyManager().DeriveKey(format, &input_stream).status(), |
| StatusIs(absl::StatusCode::kInvalidArgument, HasSubstr("version"))); |
| } |
| |
| } // namespace |
| } // namespace tink |
| } // namespace crypto |