| // 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/cord_aead_wrapper.h" |
| |
| #include <memory> |
| #include <string> |
| |
| #include "gmock/gmock.h" |
| #include "gtest/gtest.h" |
| #include "absl/strings/cord_test_helpers.h" |
| #include "absl/strings/str_split.h" |
| #include "tink/aead/cord_aead.h" |
| #include "tink/primitive_set.h" |
| #include "tink/util/status.h" |
| #include "tink/util/test_matchers.h" |
| #include "tink/util/test_util.h" |
| |
| using ::crypto::tink::test::DummyCordAead; |
| using ::crypto::tink::test::IsOk; |
| using ::crypto::tink::test::StatusIs; |
| using ::google::crypto::tink::Keyset; |
| using ::google::crypto::tink::KeyStatusType; |
| using ::google::crypto::tink::OutputPrefixType; |
| |
| namespace crypto { |
| namespace tink { |
| namespace { |
| |
| TEST(AeadSetWrapperTest, WrapNullptr) { |
| CordAeadWrapper wrapper; |
| auto aead_result = wrapper.Wrap(nullptr); |
| EXPECT_FALSE(aead_result.ok()); |
| EXPECT_EQ(util::error::INTERNAL, aead_result.status().error_code()); |
| EXPECT_PRED_FORMAT2(testing::IsSubstring, "non-NULL", |
| aead_result.status().error_message()); |
| } |
| |
| TEST(AeadSetWrapperTest, WrapEmpty) { |
| CordAeadWrapper wrapper; |
| auto aead_result = wrapper.Wrap(absl::make_unique<PrimitiveSet<CordAead>>()); |
| EXPECT_FALSE(aead_result.ok()); |
| EXPECT_EQ(util::error::INVALID_ARGUMENT, aead_result.status().error_code()); |
| EXPECT_PRED_FORMAT2(testing::IsSubstring, "no primary", |
| aead_result.status().error_message()); |
| } |
| |
| std::unique_ptr<PrimitiveSet<CordAead>> setup_keyset() { |
| Keyset::Key* key; |
| Keyset keyset; |
| |
| uint32_t key_id_0 = 1234543; |
| key = keyset.add_key(); |
| key->set_output_prefix_type(OutputPrefixType::TINK); |
| key->set_key_id(key_id_0); |
| key->set_status(KeyStatusType::ENABLED); |
| std::string aead_name_0 = "aead0"; |
| std::unique_ptr<PrimitiveSet<CordAead>> aead_set( |
| new PrimitiveSet<CordAead>()); |
| std::unique_ptr<CordAead> aead = |
| absl::make_unique<DummyCordAead>(aead_name_0); |
| auto entry_result = aead_set->AddPrimitive(std::move(aead), keyset.key(0)); |
| auto aead_set_result = aead_set->set_primary(entry_result.ValueOrDie()); |
| return aead_set; |
| } |
| |
| TEST(AeadSetWrapperTest, WrapperEncryptDecrypt) { |
| // Wrap aead_set and test the resulting Aead. |
| auto aead_set = setup_keyset(); |
| CordAeadWrapper wrapper; |
| auto aead_result = wrapper.Wrap(std::move(aead_set)); |
| ASSERT_THAT(aead_result.status(), IsOk()); |
| auto aead = std::move(aead_result.ValueOrDie()); |
| absl::Cord plaintext; |
| plaintext.Append("some_plaintext"); |
| absl::Cord aad; |
| aad.Append("some_aad"); |
| |
| auto encrypt_result = aead->Encrypt(plaintext, aad); |
| EXPECT_TRUE(encrypt_result.ok()) << encrypt_result.status(); |
| absl::Cord ciphertext = encrypt_result.ValueOrDie(); |
| |
| auto decrypt_result = aead->Decrypt(ciphertext, aad); |
| EXPECT_TRUE(decrypt_result.ok()) << decrypt_result.status(); |
| EXPECT_EQ(plaintext, decrypt_result.ValueOrDie()); |
| } |
| |
| TEST(AeadSetWrapperTest, WrapperEncryptDecryptMultipleKeys) { |
| // Wrap aead_set and test the resulting Aead. |
| auto aead_set = setup_keyset(); |
| |
| // Encrypt with the primary key |
| absl::Cord plaintext; |
| plaintext.Append("some_plaintext"); |
| absl::Cord aad; |
| aad.Append("some_aad"); |
| auto encrypt_result = |
| aead_set->get_primary()->get_primitive().Encrypt(plaintext, aad); |
| EXPECT_TRUE(encrypt_result.ok()) << encrypt_result.status(); |
| absl::Cord ciphertext; |
| ciphertext.Append(aead_set->get_primary()->get_identifier()); |
| ciphertext.Append(encrypt_result.ValueOrDie()); |
| |
| // Add a second key |
| Keyset::Key* key; |
| Keyset keyset; |
| uint32_t key_id = 42; |
| key = keyset.add_key(); |
| key->set_output_prefix_type(OutputPrefixType::TINK); |
| key->set_key_id(key_id); |
| key->set_status(KeyStatusType::ENABLED); |
| std::string aead_name = "aead1"; |
| std::unique_ptr<CordAead> aead = absl::make_unique<DummyCordAead>(aead_name); |
| auto entry_result = aead_set->AddPrimitive(std::move(aead), keyset.key(0)); |
| EXPECT_TRUE(entry_result.ok()) << entry_result.status(); |
| |
| // Wrap the primitive set |
| CordAeadWrapper wrapper; |
| auto aead_result = wrapper.Wrap(std::move(aead_set)); |
| ASSERT_THAT(aead_result.status(), IsOk()); |
| aead = std::move(aead_result.ValueOrDie()); |
| |
| // Encrypt with the wrapped AEAD and check if result was equal to the |
| // encryption with the primary key. |
| auto encrypt_wrap_result = aead->Encrypt(plaintext, aad); |
| EXPECT_TRUE(encrypt_wrap_result.ok()) << encrypt_wrap_result.status(); |
| EXPECT_EQ(ciphertext, encrypt_wrap_result.ValueOrDie()); |
| } |
| |
| TEST(AeadSetWrapperTest, WrapperEncryptDecryptManyChunks) { |
| // Wrap aead_set and test the resulting Aead. |
| auto aead_set = setup_keyset(); |
| CordAeadWrapper wrapper; |
| auto aead_result = wrapper.Wrap(std::move(aead_set)); |
| ASSERT_THAT(aead_result.status(), IsOk()); |
| auto aead = std::move(aead_result.ValueOrDie()); |
| |
| std::string plaintext = ""; |
| for (int i = 0; i < 1000; i++) { |
| plaintext += "chunk" + std::to_string(i); |
| } |
| absl::Cord plaintext_cord = |
| absl::MakeFragmentedCord(absl::StrSplit(plaintext, absl::ByLength(5))); |
| absl::Cord aad; |
| aad.Append("some_aad"); |
| |
| auto encrypt_result = aead->Encrypt(plaintext_cord, aad); |
| EXPECT_TRUE(encrypt_result.ok()) << encrypt_result.status(); |
| absl::Cord ciphertext = encrypt_result.ValueOrDie(); |
| |
| auto decrypt_result = aead->Decrypt(ciphertext, aad); |
| EXPECT_TRUE(decrypt_result.ok()) << decrypt_result.status(); |
| EXPECT_EQ(plaintext, decrypt_result.ValueOrDie()); |
| } |
| |
| TEST(AeadSetWrapperTest, WrapperEncryptBadDecrypt) { |
| // Wrap aead_set and test the resulting Aead. |
| auto aead_set = setup_keyset(); |
| CordAeadWrapper wrapper; |
| auto aead_result = wrapper.Wrap(std::move(aead_set)); |
| ASSERT_THAT(aead_result.status(), IsOk()); |
| auto aead = std::move(aead_result.ValueOrDie()); |
| absl::Cord plaintext; |
| plaintext.Append("some_plaintext"); |
| absl::Cord aad; |
| aad.Append("some_aad"); |
| |
| absl::Cord bad_ciphertext; |
| bad_ciphertext.Append("some bad ciphertext"); |
| auto decrypt_result = aead->Decrypt(bad_ciphertext, aad); |
| EXPECT_FALSE(decrypt_result.ok()); |
| EXPECT_EQ(util::error::INVALID_ARGUMENT, |
| decrypt_result.status().error_code()); |
| EXPECT_THAT(decrypt_result.status(), |
| StatusIs(util::error::INVALID_ARGUMENT, |
| testing::HasSubstr("decryption failed"))); |
| } |
| |
| } // namespace |
| } // namespace tink |
| } // namespace crypto |