| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <string> |
| #include <vector> |
| |
| #include "base/basictypes.h" |
| #include "base/bind.h" |
| #include "media/base/cdm_promise.h" |
| #include "media/base/decoder_buffer.h" |
| #include "media/base/decrypt_config.h" |
| #include "media/base/mock_filters.h" |
| #include "media/cdm/aes_decryptor.h" |
| #include "testing/gmock/include/gmock/gmock.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| using ::testing::_; |
| using ::testing::Gt; |
| using ::testing::IsNull; |
| using ::testing::NotNull; |
| using ::testing::SaveArg; |
| using ::testing::StrNe; |
| |
| MATCHER(IsEmpty, "") { return arg.empty(); } |
| MATCHER(IsNotEmpty, "") { return !arg.empty(); } |
| |
| class GURL; |
| |
| namespace media { |
| |
| const uint8 kOriginalData[] = "Original subsample data."; |
| const int kOriginalDataSize = 24; |
| |
| // In the examples below, 'k'(key) has to be 16 bytes, and will always require |
| // 2 bytes of padding. 'kid'(keyid) is variable length, and may require 0, 1, |
| // or 2 bytes of padding. |
| |
| const uint8 kKeyId[] = { |
| // base64 equivalent is AAECAw |
| 0x00, 0x01, 0x02, 0x03 |
| }; |
| |
| // Key is 0x0405060708090a0b0c0d0e0f10111213, |
| // base64 equivalent is BAUGBwgJCgsMDQ4PEBESEw. |
| const char kKeyAsJWK[] = |
| "{" |
| " \"keys\": [" |
| " {" |
| " \"kty\": \"oct\"," |
| " \"kid\": \"AAECAw\"," |
| " \"k\": \"BAUGBwgJCgsMDQ4PEBESEw\"" |
| " }" |
| " ]" |
| "}"; |
| |
| // Same kid as kKeyAsJWK, key to decrypt kEncryptedData2 |
| const char kKeyAlternateAsJWK[] = |
| "{" |
| " \"keys\": [" |
| " {" |
| " \"kty\": \"oct\"," |
| " \"kid\": \"AAECAw\"," |
| " \"k\": \"FBUWFxgZGhscHR4fICEiIw\"" |
| " }" |
| " ]" |
| "}"; |
| |
| const char kWrongKeyAsJWK[] = |
| "{" |
| " \"keys\": [" |
| " {" |
| " \"kty\": \"oct\"," |
| " \"kid\": \"AAECAw\"," |
| " \"k\": \"7u7u7u7u7u7u7u7u7u7u7g\"" |
| " }" |
| " ]" |
| "}"; |
| |
| const char kWrongSizedKeyAsJWK[] = |
| "{" |
| " \"keys\": [" |
| " {" |
| " \"kty\": \"oct\"," |
| " \"kid\": \"AAECAw\"," |
| " \"k\": \"AAECAw\"" |
| " }" |
| " ]" |
| "}"; |
| |
| const uint8 kIv[] = { |
| 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 |
| }; |
| |
| // kOriginalData encrypted with kKey and kIv but without any subsamples (or |
| // equivalently using kSubsampleEntriesCypherOnly). |
| const uint8 kEncryptedData[] = { |
| 0x2f, 0x03, 0x09, 0xef, 0x71, 0xaf, 0x31, 0x16, |
| 0xfa, 0x9d, 0x18, 0x43, 0x1e, 0x96, 0x71, 0xb5, |
| 0xbf, 0xf5, 0x30, 0x53, 0x9a, 0x20, 0xdf, 0x95 |
| }; |
| |
| // kOriginalData encrypted with kSubsampleKey and kSubsampleIv using |
| // kSubsampleEntriesNormal. |
| const uint8 kSubsampleEncryptedData[] = { |
| 0x4f, 0x72, 0x09, 0x16, 0x09, 0xe6, 0x79, 0xad, |
| 0x70, 0x73, 0x75, 0x62, 0x09, 0xbb, 0x83, 0x1d, |
| 0x4d, 0x08, 0xd7, 0x78, 0xa4, 0xa7, 0xf1, 0x2e |
| }; |
| |
| const uint8 kOriginalData2[] = "Changed Original data."; |
| |
| const uint8 kIv2[] = { |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 |
| }; |
| |
| const uint8 kKeyId2[] = { |
| // base64 equivalent is AAECAwQFBgcICQoLDA0ODxAREhM= |
| 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, |
| 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
| 0x10, 0x11, 0x12, 0x13 |
| }; |
| |
| const char kKey2AsJWK[] = |
| "{" |
| " \"keys\": [" |
| " {" |
| " \"kty\": \"oct\"," |
| " \"kid\": \"AAECAwQFBgcICQoLDA0ODxAREhM\"," |
| " \"k\": \"FBUWFxgZGhscHR4fICEiIw\"" |
| " }" |
| " ]" |
| "}"; |
| |
| // 'k' in bytes is x14x15x16x17x18x19x1ax1bx1cx1dx1ex1fx20x21x22x23 |
| |
| const uint8 kEncryptedData2[] = { |
| 0x57, 0x66, 0xf4, 0x12, 0x1a, 0xed, 0xb5, 0x79, |
| 0x1c, 0x8e, 0x25, 0xd7, 0x17, 0xe7, 0x5e, 0x16, |
| 0xe3, 0x40, 0x08, 0x27, 0x11, 0xe9 |
| }; |
| |
| // Subsample entries for testing. The sum of |cypher_bytes| and |clear_bytes| of |
| // all entries must be equal to kOriginalDataSize to make the subsample entries |
| // valid. |
| |
| const SubsampleEntry kSubsampleEntriesNormal[] = { |
| { 2, 7 }, |
| { 3, 11 }, |
| { 1, 0 } |
| }; |
| |
| const SubsampleEntry kSubsampleEntriesWrongSize[] = { |
| { 3, 6 }, // This entry doesn't match the correct entry. |
| { 3, 11 }, |
| { 1, 0 } |
| }; |
| |
| const SubsampleEntry kSubsampleEntriesInvalidTotalSize[] = { |
| { 1, 1000 }, // This entry is too large. |
| { 3, 11 }, |
| { 1, 0 } |
| }; |
| |
| const SubsampleEntry kSubsampleEntriesClearOnly[] = { |
| { 7, 0 }, |
| { 8, 0 }, |
| { 9, 0 } |
| }; |
| |
| const SubsampleEntry kSubsampleEntriesCypherOnly[] = { |
| { 0, 6 }, |
| { 0, 8 }, |
| { 0, 10 } |
| }; |
| |
| static scoped_refptr<DecoderBuffer> CreateEncryptedBuffer( |
| const std::vector<uint8>& data, |
| const std::vector<uint8>& key_id, |
| const std::vector<uint8>& iv, |
| const std::vector<SubsampleEntry>& subsample_entries) { |
| DCHECK(!data.empty()); |
| scoped_refptr<DecoderBuffer> encrypted_buffer(new DecoderBuffer(data.size())); |
| memcpy(encrypted_buffer->writable_data(), &data[0], data.size()); |
| CHECK(encrypted_buffer.get()); |
| std::string key_id_string( |
| reinterpret_cast<const char*>(key_id.empty() ? NULL : &key_id[0]), |
| key_id.size()); |
| std::string iv_string( |
| reinterpret_cast<const char*>(iv.empty() ? NULL : &iv[0]), iv.size()); |
| encrypted_buffer->set_decrypt_config(scoped_ptr<DecryptConfig>( |
| new DecryptConfig(key_id_string, iv_string, subsample_entries))); |
| return encrypted_buffer; |
| } |
| |
| enum PromiseResult { RESOLVED, REJECTED }; |
| |
| class AesDecryptorTest : public testing::Test { |
| public: |
| AesDecryptorTest() |
| : decryptor_(base::Bind(&AesDecryptorTest::OnSessionMessage, |
| base::Unretained(this)), |
| base::Bind(&AesDecryptorTest::OnSessionClosed, |
| base::Unretained(this))), |
| decrypt_cb_(base::Bind(&AesDecryptorTest::BufferDecrypted, |
| base::Unretained(this))), |
| original_data_(kOriginalData, kOriginalData + kOriginalDataSize), |
| encrypted_data_(kEncryptedData, |
| kEncryptedData + arraysize(kEncryptedData)), |
| subsample_encrypted_data_( |
| kSubsampleEncryptedData, |
| kSubsampleEncryptedData + arraysize(kSubsampleEncryptedData)), |
| key_id_(kKeyId, kKeyId + arraysize(kKeyId)), |
| iv_(kIv, kIv + arraysize(kIv)), |
| normal_subsample_entries_( |
| kSubsampleEntriesNormal, |
| kSubsampleEntriesNormal + arraysize(kSubsampleEntriesNormal)) { |
| } |
| |
| protected: |
| void OnResolveWithSession(PromiseResult expected, |
| const std::string& web_session_id) { |
| EXPECT_EQ(expected, RESOLVED); |
| EXPECT_GT(web_session_id.length(), 0ul); |
| web_session_id_ = web_session_id; |
| } |
| |
| void OnResolve(PromiseResult expected) { |
| EXPECT_EQ(expected, RESOLVED); |
| } |
| |
| void OnReject(PromiseResult expected, |
| MediaKeys::Exception exception_code, |
| uint32 system_code, |
| const std::string& error_message) { |
| EXPECT_EQ(expected, REJECTED); |
| } |
| |
| scoped_ptr<SimpleCdmPromise> CreatePromise(PromiseResult expected) { |
| scoped_ptr<SimpleCdmPromise> promise(new SimpleCdmPromise( |
| base::Bind( |
| &AesDecryptorTest::OnResolve, base::Unretained(this), expected), |
| base::Bind( |
| &AesDecryptorTest::OnReject, base::Unretained(this), expected))); |
| return promise.Pass(); |
| } |
| |
| scoped_ptr<NewSessionCdmPromise> CreateSessionPromise( |
| PromiseResult expected) { |
| scoped_ptr<NewSessionCdmPromise> promise(new NewSessionCdmPromise( |
| base::Bind(&AesDecryptorTest::OnResolveWithSession, |
| base::Unretained(this), |
| expected), |
| base::Bind( |
| &AesDecryptorTest::OnReject, base::Unretained(this), expected))); |
| return promise.Pass(); |
| } |
| |
| // Creates a new session using |key_id|. Returns the session ID. |
| std::string CreateSession(const std::vector<uint8>& key_id) { |
| DCHECK(!key_id.empty()); |
| EXPECT_CALL(*this, |
| OnSessionMessage(IsNotEmpty(), key_id, GURL::EmptyGURL())); |
| decryptor_.CreateSession(std::string(), |
| &key_id[0], |
| key_id.size(), |
| MediaKeys::TEMPORARY_SESSION, |
| CreateSessionPromise(RESOLVED)); |
| // This expects the promise to be called synchronously, which is the case |
| // for AesDecryptor. |
| return web_session_id_; |
| } |
| |
| // Releases the session specified by |session_id|. |
| void ReleaseSession(const std::string& session_id) { |
| EXPECT_CALL(*this, OnSessionClosed(session_id)); |
| decryptor_.ReleaseSession(session_id, CreatePromise(RESOLVED)); |
| } |
| |
| // Updates the session specified by |session_id| with |key|. |result| |
| // tests that the update succeeds or generates an error. |
| void UpdateSessionAndExpect(std::string session_id, |
| const std::string& key, |
| PromiseResult result) { |
| DCHECK(!key.empty()); |
| |
| decryptor_.UpdateSession(session_id, |
| reinterpret_cast<const uint8*>(key.c_str()), |
| key.length(), |
| CreatePromise(result)); |
| } |
| |
| MOCK_METHOD2(BufferDecrypted, void(Decryptor::Status, |
| const scoped_refptr<DecoderBuffer>&)); |
| |
| enum DecryptExpectation { |
| SUCCESS, |
| DATA_MISMATCH, |
| DATA_AND_SIZE_MISMATCH, |
| DECRYPT_ERROR, |
| NO_KEY |
| }; |
| |
| void DecryptAndExpect(const scoped_refptr<DecoderBuffer>& encrypted, |
| const std::vector<uint8>& plain_text, |
| DecryptExpectation result) { |
| scoped_refptr<DecoderBuffer> decrypted; |
| |
| switch (result) { |
| case SUCCESS: |
| case DATA_MISMATCH: |
| case DATA_AND_SIZE_MISMATCH: |
| EXPECT_CALL(*this, BufferDecrypted(Decryptor::kSuccess, NotNull())) |
| .WillOnce(SaveArg<1>(&decrypted)); |
| break; |
| case DECRYPT_ERROR: |
| EXPECT_CALL(*this, BufferDecrypted(Decryptor::kError, IsNull())) |
| .WillOnce(SaveArg<1>(&decrypted)); |
| break; |
| case NO_KEY: |
| EXPECT_CALL(*this, BufferDecrypted(Decryptor::kNoKey, IsNull())) |
| .WillOnce(SaveArg<1>(&decrypted)); |
| break; |
| } |
| |
| decryptor_.Decrypt(Decryptor::kVideo, encrypted, decrypt_cb_); |
| |
| std::vector<uint8> decrypted_text; |
| if (decrypted && decrypted->data_size()) { |
| decrypted_text.assign( |
| decrypted->data(), decrypted->data() + decrypted->data_size()); |
| } |
| |
| switch (result) { |
| case SUCCESS: |
| EXPECT_EQ(plain_text, decrypted_text); |
| break; |
| case DATA_MISMATCH: |
| EXPECT_EQ(plain_text.size(), decrypted_text.size()); |
| EXPECT_NE(plain_text, decrypted_text); |
| break; |
| case DATA_AND_SIZE_MISMATCH: |
| EXPECT_NE(plain_text.size(), decrypted_text.size()); |
| break; |
| case DECRYPT_ERROR: |
| case NO_KEY: |
| EXPECT_TRUE(decrypted_text.empty()); |
| break; |
| } |
| } |
| |
| MOCK_METHOD3(OnSessionMessage, |
| void(const std::string& web_session_id, |
| const std::vector<uint8>& message, |
| const GURL& destination_url)); |
| MOCK_METHOD1(OnSessionClosed, void(const std::string& web_session_id)); |
| |
| AesDecryptor decryptor_; |
| AesDecryptor::DecryptCB decrypt_cb_; |
| std::string web_session_id_; |
| |
| // Constants for testing. |
| const std::vector<uint8> original_data_; |
| const std::vector<uint8> encrypted_data_; |
| const std::vector<uint8> subsample_encrypted_data_; |
| const std::vector<uint8> key_id_; |
| const std::vector<uint8> iv_; |
| const std::vector<SubsampleEntry> normal_subsample_entries_; |
| const std::vector<SubsampleEntry> no_subsample_entries_; |
| }; |
| |
| TEST_F(AesDecryptorTest, CreateSessionWithNullInitData) { |
| EXPECT_CALL(*this, |
| OnSessionMessage(IsNotEmpty(), IsEmpty(), GURL::EmptyGURL())); |
| decryptor_.CreateSession(std::string(), |
| NULL, |
| 0, |
| MediaKeys::TEMPORARY_SESSION, |
| CreateSessionPromise(RESOLVED)); |
| } |
| |
| TEST_F(AesDecryptorTest, MultipleCreateSession) { |
| EXPECT_CALL(*this, |
| OnSessionMessage(IsNotEmpty(), IsEmpty(), GURL::EmptyGURL())); |
| decryptor_.CreateSession(std::string(), |
| NULL, |
| 0, |
| MediaKeys::TEMPORARY_SESSION, |
| CreateSessionPromise(RESOLVED)); |
| |
| EXPECT_CALL(*this, |
| OnSessionMessage(IsNotEmpty(), IsEmpty(), GURL::EmptyGURL())); |
| decryptor_.CreateSession(std::string(), |
| NULL, |
| 0, |
| MediaKeys::TEMPORARY_SESSION, |
| CreateSessionPromise(RESOLVED)); |
| |
| EXPECT_CALL(*this, |
| OnSessionMessage(IsNotEmpty(), IsEmpty(), GURL::EmptyGURL())); |
| decryptor_.CreateSession(std::string(), |
| NULL, |
| 0, |
| MediaKeys::TEMPORARY_SESSION, |
| CreateSessionPromise(RESOLVED)); |
| } |
| |
| TEST_F(AesDecryptorTest, NormalDecryption) { |
| std::string session_id = CreateSession(key_id_); |
| UpdateSessionAndExpect(session_id, kKeyAsJWK, RESOLVED); |
| scoped_refptr<DecoderBuffer> encrypted_buffer = CreateEncryptedBuffer( |
| encrypted_data_, key_id_, iv_, no_subsample_entries_); |
| DecryptAndExpect(encrypted_buffer, original_data_, SUCCESS); |
| } |
| |
| TEST_F(AesDecryptorTest, UnencryptedFrame) { |
| // An empty iv string signals that the frame is unencrypted. |
| scoped_refptr<DecoderBuffer> encrypted_buffer = CreateEncryptedBuffer( |
| original_data_, key_id_, std::vector<uint8>(), no_subsample_entries_); |
| DecryptAndExpect(encrypted_buffer, original_data_, SUCCESS); |
| } |
| |
| TEST_F(AesDecryptorTest, WrongKey) { |
| std::string session_id = CreateSession(key_id_); |
| UpdateSessionAndExpect(session_id, kWrongKeyAsJWK, RESOLVED); |
| scoped_refptr<DecoderBuffer> encrypted_buffer = CreateEncryptedBuffer( |
| encrypted_data_, key_id_, iv_, no_subsample_entries_); |
| DecryptAndExpect(encrypted_buffer, original_data_, DATA_MISMATCH); |
| } |
| |
| TEST_F(AesDecryptorTest, NoKey) { |
| scoped_refptr<DecoderBuffer> encrypted_buffer = CreateEncryptedBuffer( |
| encrypted_data_, key_id_, iv_, no_subsample_entries_); |
| EXPECT_CALL(*this, BufferDecrypted(AesDecryptor::kNoKey, IsNull())); |
| decryptor_.Decrypt(Decryptor::kVideo, encrypted_buffer, decrypt_cb_); |
| } |
| |
| TEST_F(AesDecryptorTest, KeyReplacement) { |
| std::string session_id = CreateSession(key_id_); |
| scoped_refptr<DecoderBuffer> encrypted_buffer = CreateEncryptedBuffer( |
| encrypted_data_, key_id_, iv_, no_subsample_entries_); |
| |
| UpdateSessionAndExpect(session_id, kWrongKeyAsJWK, RESOLVED); |
| ASSERT_NO_FATAL_FAILURE(DecryptAndExpect( |
| encrypted_buffer, original_data_, DATA_MISMATCH)); |
| |
| UpdateSessionAndExpect(session_id, kKeyAsJWK, RESOLVED); |
| ASSERT_NO_FATAL_FAILURE( |
| DecryptAndExpect(encrypted_buffer, original_data_, SUCCESS)); |
| } |
| |
| TEST_F(AesDecryptorTest, WrongSizedKey) { |
| std::string session_id = CreateSession(key_id_); |
| UpdateSessionAndExpect(session_id, kWrongSizedKeyAsJWK, REJECTED); |
| } |
| |
| TEST_F(AesDecryptorTest, MultipleKeysAndFrames) { |
| std::string session_id = CreateSession(key_id_); |
| UpdateSessionAndExpect(session_id, kKeyAsJWK, RESOLVED); |
| scoped_refptr<DecoderBuffer> encrypted_buffer = CreateEncryptedBuffer( |
| encrypted_data_, key_id_, iv_, no_subsample_entries_); |
| ASSERT_NO_FATAL_FAILURE( |
| DecryptAndExpect(encrypted_buffer, original_data_, SUCCESS)); |
| |
| UpdateSessionAndExpect(session_id, kKey2AsJWK, RESOLVED); |
| |
| // The first key is still available after we added a second key. |
| ASSERT_NO_FATAL_FAILURE( |
| DecryptAndExpect(encrypted_buffer, original_data_, SUCCESS)); |
| |
| // The second key is also available. |
| encrypted_buffer = CreateEncryptedBuffer( |
| std::vector<uint8>(kEncryptedData2, |
| kEncryptedData2 + arraysize(kEncryptedData2)), |
| std::vector<uint8>(kKeyId2, kKeyId2 + arraysize(kKeyId2)), |
| std::vector<uint8>(kIv2, kIv2 + arraysize(kIv2)), |
| no_subsample_entries_); |
| ASSERT_NO_FATAL_FAILURE(DecryptAndExpect( |
| encrypted_buffer, |
| std::vector<uint8>(kOriginalData2, |
| kOriginalData2 + arraysize(kOriginalData2) - 1), |
| SUCCESS)); |
| } |
| |
| TEST_F(AesDecryptorTest, CorruptedIv) { |
| std::string session_id = CreateSession(key_id_); |
| UpdateSessionAndExpect(session_id, kKeyAsJWK, RESOLVED); |
| |
| std::vector<uint8> bad_iv = iv_; |
| bad_iv[1]++; |
| |
| scoped_refptr<DecoderBuffer> encrypted_buffer = CreateEncryptedBuffer( |
| encrypted_data_, key_id_, bad_iv, no_subsample_entries_); |
| |
| DecryptAndExpect(encrypted_buffer, original_data_, DATA_MISMATCH); |
| } |
| |
| TEST_F(AesDecryptorTest, CorruptedData) { |
| std::string session_id = CreateSession(key_id_); |
| UpdateSessionAndExpect(session_id, kKeyAsJWK, RESOLVED); |
| |
| std::vector<uint8> bad_data = encrypted_data_; |
| bad_data[1]++; |
| |
| scoped_refptr<DecoderBuffer> encrypted_buffer = CreateEncryptedBuffer( |
| bad_data, key_id_, iv_, no_subsample_entries_); |
| DecryptAndExpect(encrypted_buffer, original_data_, DATA_MISMATCH); |
| } |
| |
| TEST_F(AesDecryptorTest, EncryptedAsUnencryptedFailure) { |
| std::string session_id = CreateSession(key_id_); |
| UpdateSessionAndExpect(session_id, kKeyAsJWK, RESOLVED); |
| scoped_refptr<DecoderBuffer> encrypted_buffer = CreateEncryptedBuffer( |
| encrypted_data_, key_id_, std::vector<uint8>(), no_subsample_entries_); |
| DecryptAndExpect(encrypted_buffer, original_data_, DATA_MISMATCH); |
| } |
| |
| TEST_F(AesDecryptorTest, SubsampleDecryption) { |
| std::string session_id = CreateSession(key_id_); |
| UpdateSessionAndExpect(session_id, kKeyAsJWK, RESOLVED); |
| scoped_refptr<DecoderBuffer> encrypted_buffer = CreateEncryptedBuffer( |
| subsample_encrypted_data_, key_id_, iv_, normal_subsample_entries_); |
| DecryptAndExpect(encrypted_buffer, original_data_, SUCCESS); |
| } |
| |
| // Ensures noninterference of data offset and subsample mechanisms. We never |
| // expect to encounter this in the wild, but since the DecryptConfig doesn't |
| // disallow such a configuration, it should be covered. |
| TEST_F(AesDecryptorTest, SubsampleDecryptionWithOffset) { |
| std::string session_id = CreateSession(key_id_); |
| UpdateSessionAndExpect(session_id, kKeyAsJWK, RESOLVED); |
| scoped_refptr<DecoderBuffer> encrypted_buffer = CreateEncryptedBuffer( |
| subsample_encrypted_data_, key_id_, iv_, normal_subsample_entries_); |
| DecryptAndExpect(encrypted_buffer, original_data_, SUCCESS); |
| } |
| |
| TEST_F(AesDecryptorTest, SubsampleWrongSize) { |
| std::string session_id = CreateSession(key_id_); |
| UpdateSessionAndExpect(session_id, kKeyAsJWK, RESOLVED); |
| |
| std::vector<SubsampleEntry> subsample_entries_wrong_size( |
| kSubsampleEntriesWrongSize, |
| kSubsampleEntriesWrongSize + arraysize(kSubsampleEntriesWrongSize)); |
| |
| scoped_refptr<DecoderBuffer> encrypted_buffer = CreateEncryptedBuffer( |
| subsample_encrypted_data_, key_id_, iv_, subsample_entries_wrong_size); |
| DecryptAndExpect(encrypted_buffer, original_data_, DATA_MISMATCH); |
| } |
| |
| TEST_F(AesDecryptorTest, SubsampleInvalidTotalSize) { |
| std::string session_id = CreateSession(key_id_); |
| UpdateSessionAndExpect(session_id, kKeyAsJWK, RESOLVED); |
| |
| std::vector<SubsampleEntry> subsample_entries_invalid_total_size( |
| kSubsampleEntriesInvalidTotalSize, |
| kSubsampleEntriesInvalidTotalSize + |
| arraysize(kSubsampleEntriesInvalidTotalSize)); |
| |
| scoped_refptr<DecoderBuffer> encrypted_buffer = CreateEncryptedBuffer( |
| subsample_encrypted_data_, key_id_, iv_, |
| subsample_entries_invalid_total_size); |
| DecryptAndExpect(encrypted_buffer, original_data_, DECRYPT_ERROR); |
| } |
| |
| // No cypher bytes in any of the subsamples. |
| TEST_F(AesDecryptorTest, SubsampleClearBytesOnly) { |
| std::string session_id = CreateSession(key_id_); |
| UpdateSessionAndExpect(session_id, kKeyAsJWK, RESOLVED); |
| |
| std::vector<SubsampleEntry> clear_only_subsample_entries( |
| kSubsampleEntriesClearOnly, |
| kSubsampleEntriesClearOnly + arraysize(kSubsampleEntriesClearOnly)); |
| |
| scoped_refptr<DecoderBuffer> encrypted_buffer = CreateEncryptedBuffer( |
| original_data_, key_id_, iv_, clear_only_subsample_entries); |
| DecryptAndExpect(encrypted_buffer, original_data_, SUCCESS); |
| } |
| |
| // No clear bytes in any of the subsamples. |
| TEST_F(AesDecryptorTest, SubsampleCypherBytesOnly) { |
| std::string session_id = CreateSession(key_id_); |
| UpdateSessionAndExpect(session_id, kKeyAsJWK, RESOLVED); |
| |
| std::vector<SubsampleEntry> cypher_only_subsample_entries( |
| kSubsampleEntriesCypherOnly, |
| kSubsampleEntriesCypherOnly + arraysize(kSubsampleEntriesCypherOnly)); |
| |
| scoped_refptr<DecoderBuffer> encrypted_buffer = CreateEncryptedBuffer( |
| encrypted_data_, key_id_, iv_, cypher_only_subsample_entries); |
| DecryptAndExpect(encrypted_buffer, original_data_, SUCCESS); |
| } |
| |
| TEST_F(AesDecryptorTest, ReleaseSession) { |
| std::string session_id = CreateSession(key_id_); |
| scoped_refptr<DecoderBuffer> encrypted_buffer = CreateEncryptedBuffer( |
| encrypted_data_, key_id_, iv_, no_subsample_entries_); |
| |
| UpdateSessionAndExpect(session_id, kKeyAsJWK, RESOLVED); |
| ASSERT_NO_FATAL_FAILURE( |
| DecryptAndExpect(encrypted_buffer, original_data_, SUCCESS)); |
| |
| ReleaseSession(session_id); |
| } |
| |
| TEST_F(AesDecryptorTest, NoKeyAfterReleaseSession) { |
| std::string session_id = CreateSession(key_id_); |
| scoped_refptr<DecoderBuffer> encrypted_buffer = CreateEncryptedBuffer( |
| encrypted_data_, key_id_, iv_, no_subsample_entries_); |
| |
| UpdateSessionAndExpect(session_id, kKeyAsJWK, RESOLVED); |
| ASSERT_NO_FATAL_FAILURE( |
| DecryptAndExpect(encrypted_buffer, original_data_, SUCCESS)); |
| |
| ReleaseSession(session_id); |
| ASSERT_NO_FATAL_FAILURE( |
| DecryptAndExpect(encrypted_buffer, original_data_, NO_KEY)); |
| } |
| |
| TEST_F(AesDecryptorTest, LatestKeyUsed) { |
| std::string session_id1 = CreateSession(key_id_); |
| scoped_refptr<DecoderBuffer> encrypted_buffer = CreateEncryptedBuffer( |
| encrypted_data_, key_id_, iv_, no_subsample_entries_); |
| |
| // Add alternate key, buffer should not be decoded properly. |
| UpdateSessionAndExpect(session_id1, kKeyAlternateAsJWK, RESOLVED); |
| ASSERT_NO_FATAL_FAILURE( |
| DecryptAndExpect(encrypted_buffer, original_data_, DATA_MISMATCH)); |
| |
| // Create a second session with a correct key value for key_id_. |
| std::string session_id2 = CreateSession(key_id_); |
| UpdateSessionAndExpect(session_id2, kKeyAsJWK, RESOLVED); |
| |
| // Should be able to decode with latest key. |
| ASSERT_NO_FATAL_FAILURE( |
| DecryptAndExpect(encrypted_buffer, original_data_, SUCCESS)); |
| } |
| |
| TEST_F(AesDecryptorTest, LatestKeyUsedAfterReleaseSession) { |
| std::string session_id1 = CreateSession(key_id_); |
| scoped_refptr<DecoderBuffer> encrypted_buffer = CreateEncryptedBuffer( |
| encrypted_data_, key_id_, iv_, no_subsample_entries_); |
| UpdateSessionAndExpect(session_id1, kKeyAsJWK, RESOLVED); |
| ASSERT_NO_FATAL_FAILURE( |
| DecryptAndExpect(encrypted_buffer, original_data_, SUCCESS)); |
| |
| // Create a second session with a different key value for key_id_. |
| std::string session_id2 = CreateSession(key_id_); |
| UpdateSessionAndExpect(session_id2, kKeyAlternateAsJWK, RESOLVED); |
| |
| // Should not be able to decode with new key. |
| ASSERT_NO_FATAL_FAILURE( |
| DecryptAndExpect(encrypted_buffer, original_data_, DATA_MISMATCH)); |
| |
| // Close second session, should revert to original key. |
| ReleaseSession(session_id2); |
| ASSERT_NO_FATAL_FAILURE( |
| DecryptAndExpect(encrypted_buffer, original_data_, SUCCESS)); |
| } |
| |
| TEST_F(AesDecryptorTest, JWKKey) { |
| std::string session_id = CreateSession(key_id_); |
| |
| // Try a simple JWK key (i.e. not in a set) |
| const std::string kJwkSimple = |
| "{" |
| " \"kty\": \"oct\"," |
| " \"kid\": \"AAECAwQFBgcICQoLDA0ODxAREhM\"," |
| " \"k\": \"FBUWFxgZGhscHR4fICEiIw\"" |
| "}"; |
| UpdateSessionAndExpect(session_id, kJwkSimple, REJECTED); |
| |
| // Try a key list with multiple entries. |
| const std::string kJwksMultipleEntries = |
| "{" |
| " \"keys\": [" |
| " {" |
| " \"kty\": \"oct\"," |
| " \"kid\": \"AAECAwQFBgcICQoLDA0ODxAREhM\"," |
| " \"k\": \"FBUWFxgZGhscHR4fICEiIw\"" |
| " }," |
| " {" |
| " \"kty\": \"oct\"," |
| " \"kid\": \"JCUmJygpKissLS4vMA\"," |
| " \"k\":\"MTIzNDU2Nzg5Ojs8PT4/QA\"" |
| " }" |
| " ]" |
| "}"; |
| UpdateSessionAndExpect(session_id, kJwksMultipleEntries, RESOLVED); |
| |
| // Try a key with no spaces and some \n plus additional fields. |
| const std::string kJwksNoSpaces = |
| "\n\n{\"something\":1,\"keys\":[{\n\n\"kty\":\"oct\",\"alg\":\"A128KW\"," |
| "\"kid\":\"AAECAwQFBgcICQoLDA0ODxAREhM\",\"k\":\"GawgguFyGrWKav7AX4VKUg" |
| "\",\"foo\":\"bar\"}]}\n\n"; |
| UpdateSessionAndExpect(session_id, kJwksNoSpaces, RESOLVED); |
| |
| // Try some non-ASCII characters. |
| UpdateSessionAndExpect( |
| session_id, "This is not ASCII due to \xff\xfe\xfd in it.", REJECTED); |
| |
| // Try a badly formatted key. Assume that the JSON parser is fully tested, |
| // so we won't try a lot of combinations. However, need a test to ensure |
| // that the code doesn't crash if invalid JSON received. |
| UpdateSessionAndExpect(session_id, "This is not a JSON key.", REJECTED); |
| |
| // Try passing some valid JSON that is not a dictionary at the top level. |
| UpdateSessionAndExpect(session_id, "40", REJECTED); |
| |
| // Try an empty dictionary. |
| UpdateSessionAndExpect(session_id, "{ }", REJECTED); |
| |
| // Try an empty 'keys' dictionary. |
| UpdateSessionAndExpect(session_id, "{ \"keys\": [] }", REJECTED); |
| |
| // Try with 'keys' not a dictionary. |
| UpdateSessionAndExpect(session_id, "{ \"keys\":\"1\" }", REJECTED); |
| |
| // Try with 'keys' a list of integers. |
| UpdateSessionAndExpect(session_id, "{ \"keys\": [ 1, 2, 3 ] }", REJECTED); |
| |
| // Try padding(=) at end of 'k' base64 string. |
| const std::string kJwksWithPaddedKey = |
| "{" |
| " \"keys\": [" |
| " {" |
| " \"kty\": \"oct\"," |
| " \"kid\": \"AAECAw\"," |
| " \"k\": \"BAUGBwgJCgsMDQ4PEBESEw==\"" |
| " }" |
| " ]" |
| "}"; |
| UpdateSessionAndExpect(session_id, kJwksWithPaddedKey, REJECTED); |
| |
| // Try padding(=) at end of 'kid' base64 string. |
| const std::string kJwksWithPaddedKeyId = |
| "{" |
| " \"keys\": [" |
| " {" |
| " \"kty\": \"oct\"," |
| " \"kid\": \"AAECAw==\"," |
| " \"k\": \"BAUGBwgJCgsMDQ4PEBESEw\"" |
| " }" |
| " ]" |
| "}"; |
| UpdateSessionAndExpect(session_id, kJwksWithPaddedKeyId, REJECTED); |
| |
| // Try a key with invalid base64 encoding. |
| const std::string kJwksWithInvalidBase64 = |
| "{" |
| " \"keys\": [" |
| " {" |
| " \"kty\": \"oct\"," |
| " \"kid\": \"!@#$%^&*()\"," |
| " \"k\": \"BAUGBwgJCgsMDQ4PEBESEw\"" |
| " }" |
| " ]" |
| "}"; |
| UpdateSessionAndExpect(session_id, kJwksWithInvalidBase64, REJECTED); |
| |
| // Try a 3-byte 'kid' where no base64 padding is required. |
| // |kJwksMultipleEntries| above has 2 'kid's that require 1 and 2 padding |
| // bytes. Note that 'k' has to be 16 bytes, so it will always require padding. |
| const std::string kJwksWithNoPadding = |
| "{" |
| " \"keys\": [" |
| " {" |
| " \"kty\": \"oct\"," |
| " \"kid\": \"Kiss\"," |
| " \"k\": \"BAUGBwgJCgsMDQ4PEBESEw\"" |
| " }" |
| " ]" |
| "}"; |
| UpdateSessionAndExpect(session_id, kJwksWithNoPadding, RESOLVED); |
| |
| // Empty key id. |
| const std::string kJwksWithEmptyKeyId = |
| "{" |
| " \"keys\": [" |
| " {" |
| " \"kty\": \"oct\"," |
| " \"kid\": \"\"," |
| " \"k\": \"BAUGBwgJCgsMDQ4PEBESEw\"" |
| " }" |
| " ]" |
| "}"; |
| UpdateSessionAndExpect(session_id, kJwksWithEmptyKeyId, REJECTED); |
| ReleaseSession(session_id); |
| } |
| |
| } // namespace media |
