# 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 def load_pem_private_key(data, password, backend=None): backend = _get_backend(backend) return backend.load_pem_private_key(data, password) def load_pem_public_key(data, backend=None): backend = _get_backend(backend) return backend.load_pem_public_key(data) def load_pem_parameters(data, backend=None): backend = _get_backend(backend) return backend.load_pem_parameters(data) def load_der_private_key(data, password, backend=None): backend = _get_backend(backend) return backend.load_der_private_key(data, password) def load_der_public_key(data, backend=None): backend = _get_backend(backend) return backend.load_der_public_key(data) def load_der_parameters(data, backend=None): backend = _get_backend(backend) return backend.load_der_parameters(data) class Encoding(Enum): PEM = "PEM" DER = "DER" OpenSSH = "OpenSSH" Raw = "Raw" X962 = "ANSI X9.62" SMIME = "S/MIME" class PrivateFormat(Enum): PKCS8 = "PKCS8" TraditionalOpenSSL = "TraditionalOpenSSL" Raw = "Raw" OpenSSH = "OpenSSH" class PublicFormat(Enum): SubjectPublicKeyInfo = "X.509 subjectPublicKeyInfo with PKCS#1" PKCS1 = "Raw PKCS#1" OpenSSH = "OpenSSH" Raw = "Raw" CompressedPoint = "X9.62 Compressed Point" UncompressedPoint = "X9.62 Uncompressed Point" class ParameterFormat(Enum): PKCS3 = "PKCS3" @six.add_metaclass(abc.ABCMeta) class KeySerializationEncryption(object): pass @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 @utils.register_interface(KeySerializationEncryption) class NoEncryption(object): pass