226 lines
8.2 KiB
Python
226 lines
8.2 KiB
Python
|
#
|
||
|
|
# This file is part of pyasn1-modules software.
|
||
|
|
#
|
||
|
|
# Copyright (c) 2005-2020, Ilya Etingof <etingof@gmail.com>
|
||
|
|
# License: http://snmplabs.com/pyasn1/license.html
|
||
|
|
#
|
||
|
|
# OCSP request/response syntax
|
||
|
|
#
|
||
|
|
# Derived from a minimal OCSP library (RFC2560) code written by
|
||
|
|
# Bud P. Bruegger <bud@ancitel.it>
|
||
|
|
# Copyright: Ancitel, S.p.a, Rome, Italy
|
||
|
|
# License: BSD
|
||
|
|
#
|
||
|
|
|
||
|
|
#
|
||
|
|
# current limitations:
|
||
|
|
# * request and response works only for a single certificate
|
||
|
|
# * only some values are parsed out of the response
|
||
|
|
# * the request does't set a nonce nor signature
|
||
|
|
# * there is no signature validation of the response
|
||
|
|
# * dates are left as strings in GeneralizedTime format -- datetime.datetime
|
||
|
|
# would be nicer
|
||
|
|
#
|
||
|
|
from pyasn1.type import namedtype
|
||
|
|
from pyasn1.type import namedval
|
||
|
|
from pyasn1.type import tag
|
||
|
|
from pyasn1.type import univ
|
||
|
|
from pyasn1.type import useful
|
||
|
|
|
||
|
|
from pyasn1_modules import rfc2459
|
||
|
|
|
||
|
|
|
||
|
|
# Start of OCSP module definitions
|
||
|
|
|
||
|
|
# This should be in directory Authentication Framework (X.509) module
|
||
|
|
|
||
|
|
class CRLReason(univ.Enumerated):
|
||
|
|
namedValues = namedval.NamedValues(
|
||
|
|
('unspecified', 0),
|
||
|
|
('keyCompromise', 1),
|
||
|
|
('cACompromise', 2),
|
||
|
|
('affiliationChanged', 3),
|
||
|
|
('superseded', 4),
|
||
|
|
('cessationOfOperation', 5),
|
||
|
|
('certificateHold', 6),
|
||
|
|
('removeFromCRL', 8),
|
||
|
|
('privilegeWithdrawn', 9),
|
||
|
|
('aACompromise', 10)
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
# end of directory Authentication Framework (X.509) module
|
||
|
|
|
||
|
|
# This should be in PKIX Certificate Extensions module
|
||
|
|
|
||
|
|
class GeneralName(univ.OctetString):
|
||
|
|
pass
|
||
|
|
|
||
|
|
|
||
|
|
# end of PKIX Certificate Extensions module
|
||
|
|
|
||
|
|
id_kp_OCSPSigning = univ.ObjectIdentifier((1, 3, 6, 1, 5, 5, 7, 3, 9))
|
||
|
|
id_pkix_ocsp = univ.ObjectIdentifier((1, 3, 6, 1, 5, 5, 7, 48, 1))
|
||
|
|
id_pkix_ocsp_basic = univ.ObjectIdentifier((1, 3, 6, 1, 5, 5, 7, 48, 1, 1))
|
||
|
|
id_pkix_ocsp_nonce = univ.ObjectIdentifier((1, 3, 6, 1, 5, 5, 7, 48, 1, 2))
|
||
|
|
id_pkix_ocsp_crl = univ.ObjectIdentifier((1, 3, 6, 1, 5, 5, 7, 48, 1, 3))
|
||
|
|
id_pkix_ocsp_response = univ.ObjectIdentifier((1, 3, 6, 1, 5, 5, 7, 48, 1, 4))
|
||
|
|
id_pkix_ocsp_nocheck = univ.ObjectIdentifier((1, 3, 6, 1, 5, 5, 7, 48, 1, 5))
|
||
|
|
id_pkix_ocsp_archive_cutoff = univ.ObjectIdentifier((1, 3, 6, 1, 5, 5, 7, 48, 1, 6))
|
||
|
|
id_pkix_ocsp_service_locator = univ.ObjectIdentifier((1, 3, 6, 1, 5, 5, 7, 48, 1, 7))
|
||
|
|
|
||
|
|
|
||
|
|
class AcceptableResponses(univ.SequenceOf):
|
||
|
|
componentType = univ.ObjectIdentifier()
|
||
|
|
|
||
|
|
|
||
|
|
class ArchiveCutoff(useful.GeneralizedTime):
|
||
|
|
pass
|
||
|
|
|
||
|
|
|
||
|
|
class UnknownInfo(univ.Null):
|
||
|
|
pass
|
||
|
|
|
||
|
|
|
||
|
|
class RevokedInfo(univ.Sequence):
|
||
|
|
componentType = namedtype.NamedTypes(
|
||
|
|
namedtype.NamedType('revocationTime', useful.GeneralizedTime()),
|
||
|
|
namedtype.OptionalNamedType('revocationReason', CRLReason().subtype(
|
||
|
|
explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 0)))
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
class CertID(univ.Sequence):
|
||
|
|
componentType = namedtype.NamedTypes(
|
||
|
|
namedtype.NamedType('hashAlgorithm', rfc2459.AlgorithmIdentifier()),
|
||
|
|
namedtype.NamedType('issuerNameHash', univ.OctetString()),
|
||
|
|
namedtype.NamedType('issuerKeyHash', univ.OctetString()),
|
||
|
|
namedtype.NamedType('serialNumber', rfc2459.CertificateSerialNumber())
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
class CertStatus(univ.Choice):
|
||
|
|
componentType = namedtype.NamedTypes(
|
||
|
|
namedtype.NamedType('good',
|
||
|
|
univ.Null().subtype(implicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 0))),
|
||
|
|
namedtype.NamedType('revoked',
|
||
|
|
RevokedInfo().subtype(implicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 1))),
|
||
|
|
namedtype.NamedType('unknown',
|
||
|
|
UnknownInfo().subtype(implicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 2)))
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
class SingleResponse(univ.Sequence):
|
||
|
|
componentType = namedtype.NamedTypes(
|
||
|
|
namedtype.NamedType('certID', CertID()),
|
||
|
|
namedtype.NamedType('certStatus', CertStatus()),
|
||
|
|
namedtype.NamedType('thisUpdate', useful.GeneralizedTime()),
|
||
|
|
namedtype.OptionalNamedType('nextUpdate', useful.GeneralizedTime().subtype(
|
||
|
|
explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 0))),
|
||
|
|
namedtype.OptionalNamedType('singleExtensions', rfc2459.Extensions().subtype(
|
||
|
|
explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 1)))
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
class KeyHash(univ.OctetString):
|
||
|
|
pass
|
||
|
|
|
||
|
|
|
||
|
|
class ResponderID(univ.Choice):
|
||
|
|
componentType = namedtype.NamedTypes(
|
||
|
|
namedtype.NamedType('byName',
|
||
|
|
rfc2459.Name().subtype(explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 1))),
|
||
|
|
namedtype.NamedType('byKey',
|
||
|
|
KeyHash().subtype(explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 2)))
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
class Version(univ.Integer):
|
||
|
|
namedValues = namedval.NamedValues(('v1', 0))
|
||
|
|
|
||
|
|
|
||
|
|
class ResponseData(univ.Sequence):
|
||
|
|
componentType = namedtype.NamedTypes(
|
||
|
|
namedtype.DefaultedNamedType('version', Version('v1').subtype(
|
||
|
|
explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 0))),
|
||
|
|
namedtype.NamedType('responderID', ResponderID()),
|
||
|
|
namedtype.NamedType('producedAt', useful.GeneralizedTime()),
|
||
|
|
namedtype.NamedType('responses', univ.SequenceOf(componentType=SingleResponse())),
|
||
|
|
namedtype.OptionalNamedType('responseExtensions', rfc2459.Extensions().subtype(
|
||
|
|
explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 1)))
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
class BasicOCSPResponse(univ.Sequence):
|
||
|
|
componentType = namedtype.NamedTypes(
|
||
|
|
namedtype.NamedType('tbsResponseData', ResponseData()),
|
||
|
|
namedtype.NamedType('signatureAlgorithm', rfc2459.AlgorithmIdentifier()),
|
||
|
|
namedtype.NamedType('signature', univ.BitString()),
|
||
|
|
namedtype.OptionalNamedType('certs', univ.SequenceOf(componentType=rfc2459.Certificate()).subtype(
|
||
|
|
explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 0)))
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
class ResponseBytes(univ.Sequence):
|
||
|
|
componentType = namedtype.NamedTypes(
|
||
|
|
namedtype.NamedType('responseType', univ.ObjectIdentifier()),
|
||
|
|
namedtype.NamedType('response', univ.OctetString())
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
class OCSPResponseStatus(univ.Enumerated):
|
||
|
|
namedValues = namedval.NamedValues(
|
||
|
|
('successful', 0),
|
||
|
|
('malformedRequest', 1),
|
||
|
|
('internalError', 2),
|
||
|
|
('tryLater', 3),
|
||
|
|
('undefinedStatus', 4), # should never occur
|
||
|
|
('sigRequired', 5),
|
||
|
|
('unauthorized', 6)
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
class OCSPResponse(univ.Sequence):
|
||
|
|
componentType = namedtype.NamedTypes(
|
||
|
|
namedtype.NamedType('responseStatus', OCSPResponseStatus()),
|
||
|
|
namedtype.OptionalNamedType('responseBytes', ResponseBytes().subtype(
|
||
|
|
explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 0)))
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
class Request(univ.Sequence):
|
||
|
|
componentType = namedtype.NamedTypes(
|
||
|
|
namedtype.NamedType('reqCert', CertID()),
|
||
|
|
namedtype.OptionalNamedType('singleRequestExtensions', rfc2459.Extensions().subtype(
|
||
|
|
explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 0)))
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
class Signature(univ.Sequence):
|
||
|
|
componentType = namedtype.NamedTypes(
|
||
|
|
namedtype.NamedType('signatureAlgorithm', rfc2459.AlgorithmIdentifier()),
|
||
|
|
namedtype.NamedType('signature', univ.BitString()),
|
||
|
|
namedtype.OptionalNamedType('certs', univ.SequenceOf(componentType=rfc2459.Certificate()).subtype(
|
||
|
|
explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 0)))
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
class TBSRequest(univ.Sequence):
|
||
|
|
componentType = namedtype.NamedTypes(
|
||
|
|
namedtype.DefaultedNamedType('version', Version('v1').subtype(
|
||
|
|
explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 0))),
|
||
|
|
namedtype.OptionalNamedType('requestorName', GeneralName().subtype(
|
||
|
|
explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 1))),
|
||
|
|
namedtype.NamedType('requestList', univ.SequenceOf(componentType=Request())),
|
||
|
|
namedtype.OptionalNamedType('requestExtensions', rfc2459.Extensions().subtype(
|
||
|
|
explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 2)))
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
class OCSPRequest(univ.Sequence):
|
||
|
|
componentType = namedtype.NamedTypes(
|
||
|
|
namedtype.NamedType('tbsRequest', TBSRequest()),
|
||
|
|
namedtype.OptionalNamedType('optionalSignature', Signature().subtype(
|
||
|
|
explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 0)))
|
||
|
|
)
|