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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
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Add m-esr52 at 52.6.0
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+#
+# 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 tag, namedtype, namedval, univ, constraint, 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+ ('superseded', 4),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(implicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 1))),
+ namedtype.NamedType('byKey', KeyHash().subtype(implicitTag=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(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(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(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(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)))
+ )