codekingpro/portable-devtools

1#2# This file is part of pyasn1-modules software.3#4# Created by Russ Housley with assistance from asn1ate v.0.6.0.5#6# Copyright (c) 2019, Vigil Security, LLC7# License: http://snmplabs.com/pyasn1/license.html8#9# Securing Header Fields with S/MIME10#11# ASN.1 source from:12# https://www.rfc-editor.org/rfc/rfc7508.txt13# https://www.rfc-editor.org/errata/eid587514#15 16from pyasn1.type import char17from pyasn1.type import constraint18from pyasn1.type import namedtype19from pyasn1.type import namedval20from pyasn1.type import univ21 22from pyasn1_modules import rfc565223 24import string25 26MAX = float('inf')27 28 29class Algorithm(univ.Enumerated):30    namedValues = namedval.NamedValues(31        ('canonAlgorithmSimple', 0),32        ('canonAlgorithmRelaxed', 1)33    )34 35 36class HeaderFieldStatus(univ.Integer):37    namedValues = namedval.NamedValues(38        ('duplicated', 0),39        ('deleted', 1),40        ('modified', 2)41    )42 43 44class HeaderFieldName(char.VisibleString):45    subtypeSpec = (46        constraint.PermittedAlphabetConstraint(*string.printable) -47        constraint.PermittedAlphabetConstraint(':')48    )49 50 51class HeaderFieldValue(char.UTF8String):52    pass53 54 55class HeaderField(univ.Sequence):56    componentType = namedtype.NamedTypes(57        namedtype.NamedType('field-Name', HeaderFieldName()),58        namedtype.NamedType('field-Value', HeaderFieldValue()),59        namedtype.DefaultedNamedType('field-Status',60            HeaderFieldStatus().subtype(value='duplicated'))61    )62 63 64class HeaderFields(univ.SequenceOf):65    componentType = HeaderField()66    subtypeSpec = constraint.ValueSizeConstraint(1, MAX)67 68 69class SecureHeaderFields(univ.Set):70    componentType = namedtype.NamedTypes(71        namedtype.NamedType('canonAlgorithm', Algorithm()),72        namedtype.NamedType('secHeaderFields', HeaderFields())73    )74 75 76id_aa = univ.ObjectIdentifier((1, 2, 840, 113549, 1, 9, 16, 2, ))77 78id_aa_secureHeaderFieldsIdentifier = id_aa + (55, )79 80 81 82# Map of Attribute Type OIDs to Attributes added to the83# ones that are in rfc5652.py84 85_cmsAttributesMapUpdate = {86    id_aa_secureHeaderFieldsIdentifier: SecureHeaderFields(),87}88 89rfc5652.cmsAttributesMap.update(_cmsAttributesMapUpdate)90 91