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#
# This file is part of pyasn1-modules software.
#
# Created by Russ Housley with assistance from asn1ate v.0.6.0.
#
# Copyright (c) 2019, Vigil Security, LLC
# License: http://snmplabs.com/pyasn1/license.html
#
# An Internet Attribute Certificate Profile for Authorization
#
# ASN.1 source from:
# https://www.rfc-editor.org/rfc/rfc5755.txt
# https://www.rfc-editor.org/rfc/rfc5912.txt (see Section 13)
#
from pyasn1.type import char
from pyasn1.type import constraint
from pyasn1.type import namedtype
from pyasn1.type import namedval
from pyasn1.type import opentype
from pyasn1.type import tag
from pyasn1.type import univ
from pyasn1.type import useful
from pyasn1_modules import rfc5280
from pyasn1_modules import rfc5652
MAX = float('inf')
# Map for Security Category type to value
securityCategoryMap = { }
# Imports from RFC 5652
ContentInfo = rfc5652.ContentInfo
# Imports from RFC 5280
AlgorithmIdentifier = rfc5280.AlgorithmIdentifier
Attribute = rfc5280.Attribute
AuthorityInfoAccessSyntax = rfc5280.AuthorityInfoAccessSyntax
AuthorityKeyIdentifier = rfc5280.AuthorityKeyIdentifier
CertificateSerialNumber = rfc5280.CertificateSerialNumber
CRLDistributionPoints = rfc5280.CRLDistributionPoints
Extensions = rfc5280.Extensions
Extension = rfc5280.Extension
GeneralNames = rfc5280.GeneralNames
GeneralName = rfc5280.GeneralName
UniqueIdentifier = rfc5280.UniqueIdentifier
# Object Identifier arcs
id_pkix = univ.ObjectIdentifier((1, 3, 6, 1, 5, 5, 7, ))
id_pe = id_pkix + (1, )
id_kp = id_pkix + (3, )
id_aca = id_pkix + (10, )
id_ad = id_pkix + (48, )
id_at = univ.ObjectIdentifier((2, 5, 4, ))
id_ce = univ.ObjectIdentifier((2, 5, 29, ))
# Attribute Certificate
class AttCertVersion(univ.Integer):
namedValues = namedval.NamedValues(
('v2', 1)
)
class IssuerSerial(univ.Sequence):
componentType = namedtype.NamedTypes(
namedtype.NamedType('issuer', GeneralNames()),
namedtype.NamedType('serial', CertificateSerialNumber()),
namedtype.OptionalNamedType('issuerUID', UniqueIdentifier())
)
class ObjectDigestInfo(univ.Sequence):
componentType = namedtype.NamedTypes(
namedtype.NamedType('digestedObjectType',
univ.Enumerated(namedValues=namedval.NamedValues(
('publicKey', 0),
('publicKeyCert', 1),
('otherObjectTypes', 2)))),
namedtype.OptionalNamedType('otherObjectTypeID',
univ.ObjectIdentifier()),
namedtype.NamedType('digestAlgorithm',
AlgorithmIdentifier()),
namedtype.NamedType('objectDigest',
univ.BitString())
)
class Holder(univ.Sequence):
componentType = namedtype.NamedTypes(
namedtype.OptionalNamedType('baseCertificateID',
IssuerSerial().subtype(implicitTag=tag.Tag(
tag.tagClassContext, tag.tagFormatConstructed, 0))),
namedtype.OptionalNamedType('entityName',
GeneralNames().subtype(implicitTag=tag.Tag(
tag.tagClassContext, tag.tagFormatSimple, 1))),
namedtype.OptionalNamedType('objectDigestInfo',
ObjectDigestInfo().subtype(implicitTag=tag.Tag(
tag.tagClassContext, tag.tagFormatConstructed, 2)))
)
class V2Form(univ.Sequence):
componentType = namedtype.NamedTypes(
namedtype.OptionalNamedType('issuerName',
GeneralNames()),
namedtype.OptionalNamedType('baseCertificateID',
IssuerSerial().subtype(implicitTag=tag.Tag(
tag.tagClassContext, tag.tagFormatConstructed, 0))),
namedtype.OptionalNamedType('objectDigestInfo',
ObjectDigestInfo().subtype(implicitTag=tag.Tag(
tag.tagClassContext, tag.tagFormatConstructed, 1)))
)
class AttCertIssuer(univ.Choice):
componentType = namedtype.NamedTypes(
namedtype.NamedType('v1Form', GeneralNames()),
namedtype.NamedType('v2Form', V2Form().subtype(implicitTag=tag.Tag(
tag.tagClassContext, tag.tagFormatConstructed, 0)))
)
class AttCertValidityPeriod(univ.Sequence):
componentType = namedtype.NamedTypes(
namedtype.NamedType('notBeforeTime', useful.GeneralizedTime()),
namedtype.NamedType('notAfterTime', useful.GeneralizedTime())
)
class AttributeCertificateInfo(univ.Sequence):
componentType = namedtype.NamedTypes(
namedtype.NamedType('version',
AttCertVersion()),
namedtype.NamedType('holder',
Holder()),
namedtype.NamedType('issuer',
AttCertIssuer()),
namedtype.NamedType('signature',
AlgorithmIdentifier()),
namedtype.NamedType('serialNumber',
CertificateSerialNumber()),
namedtype.NamedType('attrCertValidityPeriod',
AttCertValidityPeriod()),
namedtype.NamedType('attributes',
univ.SequenceOf(componentType=Attribute())),
namedtype.OptionalNamedType('issuerUniqueID',
UniqueIdentifier()),
namedtype.OptionalNamedType('extensions',
Extensions())
)
class AttributeCertificate(univ.Sequence):
componentType = namedtype.NamedTypes(
namedtype.NamedType('acinfo', AttributeCertificateInfo()),
namedtype.NamedType('signatureAlgorithm', AlgorithmIdentifier()),
namedtype.NamedType('signatureValue', univ.BitString())
)
# Attribute Certificate Extensions
id_pe_ac_auditIdentity = id_pe + (4, )
id_ce_noRevAvail = id_ce + (56, )
id_ce_targetInformation = id_ce + (55, )
class TargetCert(univ.Sequence):
componentType = namedtype.NamedTypes(
namedtype.NamedType('targetCertificate', IssuerSerial()),
namedtype.OptionalNamedType('targetName', GeneralName()),
namedtype.OptionalNamedType('certDigestInfo', ObjectDigestInfo())
)
class Target(univ.Choice):
componentType = namedtype.NamedTypes(
namedtype.NamedType('targetName',
GeneralName().subtype(implicitTag=tag.Tag(
tag.tagClassContext, tag.tagFormatSimple, 0))),
namedtype.NamedType('targetGroup',
GeneralName().subtype(implicitTag=tag.Tag(
tag.tagClassContext, tag.tagFormatSimple, 1))),
namedtype.NamedType('targetCert',
TargetCert().subtype(implicitTag=tag.Tag(
tag.tagClassContext, tag.tagFormatConstructed, 2)))
)
class Targets(univ.SequenceOf):
componentType = Target()
id_pe_ac_proxying = id_pe + (10, )
class ProxyInfo(univ.SequenceOf):
componentType = Targets()
id_pe_aaControls = id_pe + (6, )
class AttrSpec(univ.SequenceOf):
componentType = univ.ObjectIdentifier()
class AAControls(univ.Sequence):
componentType = namedtype.NamedTypes(
namedtype.OptionalNamedType('pathLenConstraint',
univ.Integer().subtype(
subtypeSpec=constraint.ValueRangeConstraint(0, MAX))),
namedtype.OptionalNamedType('permittedAttrs',
AttrSpec().subtype(implicitTag=tag.Tag(
tag.tagClassContext, tag.tagFormatSimple, 0))),
namedtype.OptionalNamedType('excludedAttrs',
AttrSpec().subtype(implicitTag=tag.Tag(
tag.tagClassContext, tag.tagFormatSimple, 1))),
namedtype.DefaultedNamedType('permitUnSpecified',
univ.Boolean().subtype(value=1))
)
# Attribute Certificate Attributes
id_aca_authenticationInfo = id_aca + (1, )
id_aca_accessIdentity = id_aca + (2, )
class SvceAuthInfo(univ.Sequence):
componentType = namedtype.NamedTypes(
namedtype.NamedType('service', GeneralName()),
namedtype.NamedType('ident', GeneralName()),
namedtype.OptionalNamedType('authInfo', univ.OctetString())
)
id_aca_chargingIdentity = id_aca + (3, )
id_aca_group = id_aca + (4, )
class IetfAttrSyntax(univ.Sequence):
componentType = namedtype.NamedTypes(
namedtype.OptionalNamedType('policyAuthority',
GeneralNames().subtype(implicitTag=tag.Tag(
tag.tagClassContext, tag.tagFormatSimple, 0))),
namedtype.NamedType('values', univ.SequenceOf(
componentType=univ.Choice(componentType=namedtype.NamedTypes(
namedtype.NamedType('octets', univ.OctetString()),
namedtype.NamedType('oid', univ.ObjectIdentifier()),
namedtype.NamedType('string', char.UTF8String())
))
))
)
id_at_role = id_at + (72,)
class RoleSyntax(univ.Sequence):
componentType = namedtype.NamedTypes(
namedtype.OptionalNamedType('roleAuthority',
GeneralNames().subtype(implicitTag=tag.Tag(
tag.tagClassContext, tag.tagFormatSimple, 0))),
namedtype.NamedType('roleName',
GeneralName().subtype(implicitTag=tag.Tag(
tag.tagClassContext, tag.tagFormatSimple, 1)))
)
class ClassList(univ.BitString):
namedValues = namedval.NamedValues(
('unmarked', 0),
('unclassified', 1),
('restricted', 2),
('confidential', 3),
('secret', 4),
('topSecret', 5)
)
class SecurityCategory(univ.Sequence):
componentType = namedtype.NamedTypes(
namedtype.NamedType('type',
univ.ObjectIdentifier().subtype(implicitTag=tag.Tag(
tag.tagClassContext, tag.tagFormatSimple, 0))),
namedtype.NamedType('value',
univ.Any().subtype(implicitTag=tag.Tag(
tag.tagClassContext, tag.tagFormatSimple, 1)),
openType=opentype.OpenType('type', securityCategoryMap))
)
id_at_clearance = univ.ObjectIdentifier((2, 5, 4, 55, ))
class Clearance(univ.Sequence):
componentType = namedtype.NamedTypes(
namedtype.NamedType('policyId',
univ.ObjectIdentifier()),
namedtype.DefaultedNamedType('classList',
ClassList().subtype(value='unclassified')),
namedtype.OptionalNamedType('securityCategories',
univ.SetOf(componentType=SecurityCategory()))
)
id_at_clearance_rfc3281 = univ.ObjectIdentifier((2, 5, 1, 5, 55, ))
class Clearance_rfc3281(univ.Sequence):
componentType = namedtype.NamedTypes(
namedtype.NamedType('policyId',
univ.ObjectIdentifier().subtype(implicitTag=tag.Tag(
tag.tagClassContext, tag.tagFormatSimple, 0))),
namedtype.DefaultedNamedType('classList',
ClassList().subtype(implicitTag=tag.Tag(
tag.tagClassContext, tag.tagFormatSimple, 1)).subtype(
value='unclassified')),
namedtype.OptionalNamedType('securityCategories',
univ.SetOf(componentType=SecurityCategory()).subtype(
implicitTag=tag.Tag(
tag.tagClassContext, tag.tagFormatSimple, 2)))
)
id_aca_encAttrs = id_aca + (6, )
class ACClearAttrs(univ.Sequence):
componentType = namedtype.NamedTypes(
namedtype.NamedType('acIssuer', GeneralName()),
namedtype.NamedType('acSerial', univ.Integer()),
namedtype.NamedType('attrs', univ.SequenceOf(componentType=Attribute()))
)
# Map of Certificate Extension OIDs to Extensions added to the
# ones that are in rfc5280.py
_certificateExtensionsMapUpdate = {
id_pe_ac_auditIdentity: univ.OctetString(),
id_ce_noRevAvail: univ.Null(),
id_ce_targetInformation: Targets(),
id_pe_ac_proxying: ProxyInfo(),
id_pe_aaControls: AAControls(),
}
rfc5280.certificateExtensionsMap.update(_certificateExtensionsMapUpdate)
# Map of AttributeType OIDs to AttributeValue added to the
# ones that are in rfc5280.py
_certificateAttributesMapUpdate = {
id_aca_authenticationInfo: SvceAuthInfo(),
id_aca_accessIdentity: SvceAuthInfo(),
id_aca_chargingIdentity: IetfAttrSyntax(),
id_aca_group: IetfAttrSyntax(),
id_at_role: RoleSyntax(),
id_at_clearance: Clearance(),
id_at_clearance_rfc3281: Clearance_rfc3281(),
id_aca_encAttrs: ContentInfo(),
}
rfc5280.certificateAttributesMap.update(_certificateAttributesMapUpdate)
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