diff options
Diffstat (limited to 'tests/hazmat/primitives/utils.py')
| -rw-r--r-- | tests/hazmat/primitives/utils.py | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/tests/hazmat/primitives/utils.py b/tests/hazmat/primitives/utils.py index e6e97d1d..90c15b13 100644 --- a/tests/hazmat/primitives/utils.py +++ b/tests/hazmat/primitives/utils.py @@ -49,6 +49,45 @@ def encrypt_test(backend, cipher_factory, mode_factory, params, only_if, assert actual_plaintext == binascii.unhexlify(plaintext) +def generate_stream_encryption_test(param_loader, path, file_names, + cipher_factory, only_if=None, + skip_message=None): + def test_stream_encryption(self): + for backend in _ALL_BACKENDS: + for file_name in file_names: + for params in param_loader(os.path.join(path, file_name)): + yield ( + stream_encryption_test, + backend, + cipher_factory, + params, + only_if, + skip_message + ) + return test_stream_encryption + + +def stream_encryption_test(backend, cipher_factory, params, only_if, + skip_message): + if not only_if(backend): + pytest.skip(skip_message) + plaintext = params.pop("plaintext") + ciphertext = params.pop("ciphertext") + offset = params.pop("offset") + cipher = Cipher(cipher_factory(**params), None, backend) + encryptor = cipher.encryptor() + # throw away offset bytes + encryptor.update(b"\x00" * int(offset)) + actual_ciphertext = encryptor.update(binascii.unhexlify(plaintext)) + actual_ciphertext += encryptor.finalize() + assert actual_ciphertext == binascii.unhexlify(ciphertext) + decryptor = cipher.decryptor() + decryptor.update(b"\x00" * int(offset)) + actual_plaintext = decryptor.update(binascii.unhexlify(ciphertext)) + actual_plaintext += decryptor.finalize() + assert actual_plaintext == binascii.unhexlify(plaintext) + + def generate_hash_test(param_loader, path, file_names, hash_cls, only_if=None, skip_message=None): def test_hash(self): |