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# lae Ju@plJbѿ , ? # 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 import datetime import os from enum import Enum import six from cryptography import utils from cryptography.hazmat.primitives.asymmetric import dsa, ec, rsa from cryptography.x509.extensions import Extension, ExtensionType from cryptography.x509.name import Name _UNIX_EPOCH = datetime.datetime(1970, 1, 1) def _convert_to_naive_utc_time(time): """Normalizes a datetime to a naive datetime in UTC. time -- datetime to normalize. Assumed to be in UTC if not timezone aware. """ if time.tzinfo is not None: offset = time.utcoffset() offset = offset if offset else datetime.timedelta() return time.replace(tzinfo=None) - offset else: return time class Version(Enum): v1 = 0 v3 = 2 def load_pem_x509_certificate(data, backend): return backend.load_pem_x509_certificate(data) def load_der_x509_certificate(data, backend): return backend.load_der_x509_certificate(data) def load_pem_x509_csr(data, backend): return backend.load_pem_x509_csr(data) def load_der_x509_csr(data, backend): return backend.load_der_x509_csr(data) def load_pem_x509_crl(data, backend): return backend.load_pem_x509_crl(data) def load_der_x509_crl(data, backend): return backend.load_der_x509_crl(data) class InvalidVersion(Exception): def __init__(self, msg, parsed_version): super(InvalidVersion, self).__init__(msg) self.parsed_version = parsed_version @six.add_metaclass(abc.ABCMeta) class Certificate(object): @abc.abstractmethod def fingerprint(self, algorithm): """ Returns bytes using digest passed. """ @abc.abstractproperty def serial_number(self): """ Returns certificate serial number """ @abc.abstractproperty def version(self): """ Returns the certificate version """ @abc.abstractmethod def public_key(self): """ Returns the public key """ @abc.abstractproperty def not_valid_before(self): """ Not before time (represented as UTC datetime) """ @abc.abstractproperty def not_valid_after(self): """ Not after time (represented as UTC datetime) """ @abc.abstractproperty def issuer(self): """ Returns the issuer name object. """ @abc.abstractproperty def subject(self): """ Returns the subject name object. """ @abc.abstractproperty def signature_hash_algorithm(self): """ Returns a HashAlgorithm corresponding to the type of the digest signed in the certificate. """ @abc.abstractproperty def signature_algorithm_oid(self): """ Returns the ObjectIdentifier of the signature algorithm. """ @abc.abstractproperty def extensions(self): """ Returns an Extensions object. """ @abc.abstractproperty def signature(self): """ Returns the signature bytes. """ @abc.abstractproperty def tbs_certificate_bytes(self): """ Returns the tbsCertificate payload bytes as defined in RFC 5280. """ @abc.abstractmethod def __eq__(self, other): """ Checks equality. """ @abc.abstractmethod def __ne__(self, other): """ Checks not equal.