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# 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
from cryptography.hazmat._types import (
_PRIVATE_KEY_TYPES,
_PUBLIC_KEY_TYPES,
)
from cryptography.hazmat.backends import _get_backend
from cryptography.hazmat.primitives.asymmetric import dh
def load_pem_private_key(
data: bytes, password: typing.Optional[bytes], backend=None
) -> _PRIVATE_KEY_TYPES:
backend = _get_backend(backend)
return backend.load_pem_private_key(data, password)
def load_pem_public_key(data: bytes, backend=None) -> _PUBLIC_KEY_TYPES:
backend = _get_backend(backend)
return backend.load_pem_public_key(data)
def load_pem_parameters(data: bytes, backend=None) -> "dh.DHParameters":
backend = _get_backend(backend)
return backend.load_pem_parameters(data)
def load_der_private_key(
data: bytes, password: typing.Optional[bytes], backend=None
) -> _PRIVATE_KEY_TYPES:
backend = _get_backend(backend)
return backend.load_der_private_key(data, password)
def load_der_public_key(data: bytes, backend=None) -> _PUBLIC_KEY_TYPES:
backend = _get_backend(backend)
return backend.load_der_public_key(data)
def load_der_parameters(data: bytes, backend=None) -> "dh.DHParameters":
backend = _get_backend(backend)
return backend.load_der_parameters(data)
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