# This file is dual licensed under the terms of the Apache License, Version # 2.0, and the BSD License. See the LICENSE file in the root of this repository # for complete details. import typing _default_backend: typing.Any = None def default_backend(): global _default_backend if _default_backend is None: from cryptography.hazmat.backends.openssl.backend import backend _default_backend = backend return _default_backend def _get_backend(backend): if backend is None: return default_backend() else: return backend