| // Copyright 2017 Google Inc. |
| // |
| // 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/hybrid_decrypt_wrapper.h" |
| |
| #include "gtest/gtest.h" |
| #include "tink/hybrid_decrypt.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::DummyHybridDecrypt; |
| using ::crypto::tink::test::DummyHybridEncrypt; |
| using ::google::crypto::tink::Keyset; |
| using ::google::crypto::tink::KeyStatusType; |
| using ::google::crypto::tink::OutputPrefixType; |
| using ::crypto::tink::test::IsOk; |
| |
| namespace crypto { |
| namespace tink { |
| namespace { |
| |
| class HybridDecryptSetWrapperTest : public ::testing::Test { |
| protected: |
| void SetUp() override { |
| } |
| void TearDown() override { |
| } |
| }; |
| |
| TEST_F(HybridDecryptSetWrapperTest, Basic) { |
| { // hybrid_decrypt_set is nullptr. |
| auto hybrid_decrypt_result = |
| HybridDecryptWrapper().Wrap(nullptr); |
| EXPECT_FALSE(hybrid_decrypt_result.ok()); |
| EXPECT_EQ(util::error::INTERNAL, |
| hybrid_decrypt_result.status().error_code()); |
| EXPECT_PRED_FORMAT2(testing::IsSubstring, "non-NULL", |
| hybrid_decrypt_result.status().error_message()); |
| } |
| |
| { // hybrid_decrypt_set has no primary primitive. |
| std::unique_ptr<PrimitiveSet<HybridDecrypt>> |
| hybrid_decrypt_set(new PrimitiveSet<HybridDecrypt>()); |
| auto hybrid_decrypt_result = HybridDecryptWrapper().Wrap( |
| std::move(hybrid_decrypt_set)); |
| EXPECT_FALSE(hybrid_decrypt_result.ok()); |
| EXPECT_EQ(util::error::INVALID_ARGUMENT, |
| hybrid_decrypt_result.status().error_code()); |
| EXPECT_PRED_FORMAT2(testing::IsSubstring, "no primary", |
| hybrid_decrypt_result.status().error_message()); |
| } |
| |
| { // Correct hybrid_decrypt_set; |
| Keyset::Key* key; |
| Keyset keyset; |
| |
| uint32_t key_id_0 = 1234543; |
| key = keyset.add_key(); |
| key->set_output_prefix_type(OutputPrefixType::RAW); |
| key->set_key_id(key_id_0); |
| key->set_status(KeyStatusType::ENABLED); |
| |
| uint32_t key_id_1 = 726329; |
| key = keyset.add_key(); |
| key->set_output_prefix_type(OutputPrefixType::LEGACY); |
| key->set_key_id(key_id_1); |
| key->set_status(KeyStatusType::ENABLED); |
| |
| uint32_t key_id_2 = 7213743; |
| key = keyset.add_key(); |
| key->set_output_prefix_type(OutputPrefixType::TINK); |
| key->set_key_id(key_id_2); |
| key->set_status(KeyStatusType::ENABLED); |
| |
| std::string hybrid_name_0 = "hybrid_0"; |
| std::string hybrid_name_1 = "hybrid_1"; |
| std::string hybrid_name_2 = "hybrid_2"; |
| std::unique_ptr<PrimitiveSet<HybridDecrypt>> hybrid_decrypt_set( |
| new PrimitiveSet<HybridDecrypt>()); |
| std::unique_ptr<HybridDecrypt> hybrid_decrypt( |
| new DummyHybridDecrypt(hybrid_name_0)); |
| auto entry_result = hybrid_decrypt_set->AddPrimitive( |
| std::move(hybrid_decrypt), keyset.key(0)); |
| ASSERT_TRUE(entry_result.ok()); |
| hybrid_decrypt.reset(new DummyHybridDecrypt(hybrid_name_1)); |
| entry_result = hybrid_decrypt_set->AddPrimitive( |
| std::move(hybrid_decrypt), keyset.key(1)); |
| ASSERT_TRUE(entry_result.ok()); |
| std::string prefix_id_1 = entry_result.ValueOrDie()->get_identifier(); |
| hybrid_decrypt.reset(new DummyHybridDecrypt(hybrid_name_2)); |
| entry_result = hybrid_decrypt_set->AddPrimitive( |
| std::move(hybrid_decrypt), keyset.key(2)); |
| ASSERT_TRUE(entry_result.ok()); |
| // The last key is the primary. |
| ASSERT_THAT(hybrid_decrypt_set->set_primary(entry_result.ValueOrDie()), |
| IsOk()); |
| |
| // Wrap hybrid_decrypt_set and test the resulting HybridDecrypt. |
| auto hybrid_decrypt_result = HybridDecryptWrapper().Wrap( |
| std::move(hybrid_decrypt_set)); |
| EXPECT_TRUE(hybrid_decrypt_result.ok()) << hybrid_decrypt_result.status(); |
| hybrid_decrypt = std::move(hybrid_decrypt_result.ValueOrDie()); |
| std::string plaintext = "some_plaintext"; |
| std::string context_info = "some_context"; |
| |
| { // RAW key |
| std::string ciphertext = DummyHybridEncrypt(hybrid_name_0) |
| .Encrypt(plaintext, context_info) |
| .ValueOrDie(); |
| auto decrypt_result = hybrid_decrypt->Decrypt(ciphertext, context_info); |
| EXPECT_TRUE(decrypt_result.ok()) << decrypt_result.status(); |
| EXPECT_EQ(plaintext, decrypt_result.ValueOrDie()); |
| } |
| |
| { // No ciphertext prefix. |
| std::string ciphertext = plaintext + hybrid_name_1; |
| auto decrypt_result = hybrid_decrypt->Decrypt(ciphertext, context_info); |
| EXPECT_FALSE(decrypt_result.ok()); |
| EXPECT_EQ(util::error::INVALID_ARGUMENT, |
| decrypt_result.status().error_code()); |
| EXPECT_PRED_FORMAT2(testing::IsSubstring, "decryption failed", |
| decrypt_result.status().error_message()); |
| } |
| |
| { // Correct ciphertext prefix. |
| std::string ciphertext = |
| prefix_id_1 + DummyHybridEncrypt(hybrid_name_1) |
| .Encrypt(plaintext, context_info) |
| .ValueOrDie(); |
| auto decrypt_result = hybrid_decrypt->Decrypt(ciphertext, context_info); |
| EXPECT_TRUE(decrypt_result.ok()) << decrypt_result.status(); |
| EXPECT_EQ(plaintext, decrypt_result.ValueOrDie()); |
| } |
| |
| { // Bad ciphertext. |
| std::string ciphertext = "some bad ciphertext"; |
| auto decrypt_result = hybrid_decrypt->Decrypt(ciphertext, context_info); |
| EXPECT_FALSE(decrypt_result.ok()); |
| EXPECT_EQ(util::error::INVALID_ARGUMENT, |
| decrypt_result.status().error_code()); |
| EXPECT_PRED_FORMAT2(testing::IsSubstring, "decryption failed", |
| decrypt_result.status().error_message()); |
| } |
| } |
| } |
| |
| } // namespace |
| } // namespace tink |
| } // namespace crypto |