# 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.
from __future__ import absolute_import, division, print_function
import abc
from enum import Enum
import six
from cryptography import utils
from cryptography.hazmat.backends import _get_backend
[docs]def load_pem_private_key(data, password, backend=None):
backend = _get_backend(backend)
return backend.load_pem_private_key(data, password)
[docs]def load_pem_public_key(data, backend=None):
backend = _get_backend(backend)
return backend.load_pem_public_key(data)
[docs]def load_pem_parameters(data, backend=None):
backend = _get_backend(backend)
return backend.load_pem_parameters(data)
[docs]def load_der_private_key(data, password, backend=None):
backend = _get_backend(backend)
return backend.load_der_private_key(data, password)
[docs]def load_der_public_key(data, backend=None):
backend = _get_backend(backend)
return backend.load_der_public_key(data)
[docs]def load_der_parameters(data, backend=None):
backend = _get_backend(backend)
return backend.load_der_parameters(data)
[docs]class Encoding(Enum):
PEM = "PEM"
DER = "DER"
OpenSSH = "OpenSSH"
Raw = "Raw"
X962 = "ANSI X9.62"
[docs]@six.add_metaclass(abc.ABCMeta)
class KeySerializationEncryption(object):
pass
[docs]@utils.register_interface(KeySerializationEncryption)
class BestAvailableEncryption(object):
def __init__(self, password):
if not isinstance(password, bytes) or len(password) == 0:
raise ValueError("Password must be 1 or more bytes.")
self.password = password
[docs]@utils.register_interface(KeySerializationEncryption)
class NoEncryption(object):
pass