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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.
from __future__ import absolute_import, division, print_function
import abc
from enum import Enum
import six
from cryptography import utils
_OID_NAMES = {
"2.5.4.3": "commonName",
"2.5.4.6": "countryName",
"2.5.4.7": "localityName",
"2.5.4.8": "stateOrProvinceName",
"2.5.4.10": "organizationName",
"2.5.4.11": "organizationalUnitName",
"2.5.4.5": "serialNumber",
"2.5.4.4": "surname",
"2.5.4.42": "givenName",
"2.5.4.12": "title",
"2.5.4.44": "generationQualifier",
"2.5.4.46": "dnQualifier",
"2.5.4.65": "pseudonym",
"0.9.2342.19200300.100.1.25": "domainComponent",
"1.2.840.113549.1.9.1": "emailAddress",
"1.2.840.113549.1.1.4": "md5WithRSA",
"1.2.840.113549.1.1.5": "sha1WithRSA",
"1.2.840.113549.1.1.14": "sha224WithRSAEncryption",
"1.2.840.113549.1.1.11": "sha256WithRSAEncryption",
"1.2.840.113549.1.1.12": "sha384WithRSAEncryption",
"1.2.840.113549.1.1.13": "sha512WithRSAEncryption",
"1.2.840.10045.4.3.1": "ecdsa_with_SHA224",
"1.2.840.10045.4.3.2": "ecdsa_with_SHA256",
"1.2.840.10045.4.3.3": "ecdsa_with_SHA384",
"1.2.840.10045.4.3.4": "ecdsa_with_SHA512",
"1.2.840.10040.4.3": "dsaWithSHA1",
"2.16.840.1.101.3.4.3.1": "dsa_with_SHA224",
"2.16.840.1.101.3.4.3.2": "dsa_with_SHA256",
}
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)
class InvalidVersion(Exception):
def __init__(self, msg, parsed_version):
super(InvalidVersion, self).__init__(msg)
self.parsed_version = parsed_version
class NameAttribute(object):
def __init__(self, oid, value):
if not isinstance(oid, ObjectIdentifier):
raise TypeError(
"oid argument must be an ObjectIdentifier instance."
)
self._oid = oid
self._value = value
oid = utils.read_only_property("_oid")
value = utils.read_only_property("_value")
def __eq__(self, other):
if not isinstance(other, NameAttribute):
return NotImplemented
return (
self.oid == other.oid and
self.value == other.value
)
def __ne__(self, other):
return not self == other
def __repr__(self):
return "<NameAttribute(oid={oid}, value={value!r})>".format(
oid=self.oid,
value=self.value
)
class ObjectIdentifier(object):
def __init__(self, dotted_string):
self._dotted_string = dotted_string
def __eq__(self, other):
if not isinstance(other, ObjectIdentifier):
return NotImplemented
return self._dotted_string == other._dotted_string
def __ne__(self, other):
return not self == other
def __repr__(self):
return "<ObjectIdentifier(oid={0}, name={1})>".format(
self._dotted_string,
_OID_NAMES.get(self._dotted_string, "Unknown OID")
)
dotted_string = utils.read_only_property("_dotted_string")
class Name(object):
def __init__(self, attributes):
self._attributes = attributes
def get_attributes_for_oid(self, oid):
return [i for i in self._attributes if i.oid == oid]
def __eq__(self, other):
if not isinstance(other, Name):
return NotImplemented
return self._attributes == other._attributes
def __ne__(self, other):
return not self == other
def __iter__(self):
return iter(self._attributes)
def __len__(self):
return len(self._attributes)
OID_COMMON_NAME = ObjectIdentifier("2.5.4.3")
OID_COUNTRY_NAME = ObjectIdentifier("2.5.4.6")
OID_LOCALITY_NAME = ObjectIdentifier("2.5.4.7")
OID_STATE_OR_PROVINCE_NAME = ObjectIdentifier("2.5.4.8")
OID_ORGANIZATION_NAME = ObjectIdentifier("2.5.4.10")
OID_ORGANIZATIONAL_UNIT_NAME = ObjectIdentifier("2.5.4.11")
OID_SERIAL_NUMBER = ObjectIdentifier("2.5.4.5")
OID_SURNAME = ObjectIdentifier("2.5.4.4")
OID_GIVEN_NAME = ObjectIdentifier("2.5.4.42")
OID_TITLE = ObjectIdentifier("2.5.4.12")
OID_GENERATION_QUALIFIER = ObjectIdentifier("2.5.4.44")
OID_DN_QUALIFIER = ObjectIdentifier("2.5.4.46")
OID_PSEUDONYM = ObjectIdentifier("2.5.4.65")
OID_DOMAIN_COMPONENT = ObjectIdentifier("0.9.2342.19200300.100.1.25")
OID_EMAIL_ADDRESS = ObjectIdentifier("1.2.840.113549.1.9.1")
OID_MD5_WITH_RSA = ObjectIdentifier("1.2.840.113549.1.1.4")
OID_SHA1_WITH_RSA = ObjectIdentifier("1.2.840.113549.1.1.5")
OID_SHA224_WITH_RSA = ObjectIdentifier("1.2.840.113549.1.1.14")
OID_SHA256_WITH_RSA = ObjectIdentifier("1.2.840.113549.1.1.11")
OID_SHA384_WITH_RSA = ObjectIdentifier("1.2.840.113549.1.1.12")
OID_SHA512_WITH_RSA = ObjectIdentifier("1.2.840.113549.1.1.13")
OID_ECDSA_WITH_SHA224 = ObjectIdentifier("1.2.840.10045.4.3.1")
OID_ECDSA_WITH_SHA256 = ObjectIdentifier("1.2.840.10045.4.3.2")
OID_ECDSA_WITH_SHA384 = ObjectIdentifier("1.2.840.10045.4.3.3")
OID_ECDSA_WITH_SHA512 = ObjectIdentifier("1.2.840.10045.4.3.4")
OID_DSA_WITH_SHA1 = ObjectIdentifier("1.2.840.10040.4.3")
OID_DSA_WITH_SHA224 = ObjectIdentifier("2.16.840.1.101.3.4.3.1")
OID_DSA_WITH_SHA256 = ObjectIdentifier("2.16.840.1.101.3.4.3.2")
@six.add_metaclass(abc.ABCMeta)
class Certificate(object):
@abc.abstractmethod
def fingerprint(self, algorithm):
"""
Returns bytes using digest passed.
"""
@abc.abstractproperty
def serial(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_algorithm(self):
"""
Returns an ObjectIdentifier corresponding to the signature algorithm of
the certificate.
"""
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