| # |
| # 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 |
| # |
| # Securing Header Fields with S/MIME |
| # |
| # ASN.1 source from: |
| # https://www.rfc-editor.org/rfc/rfc7508.txt |
| # https://www.rfc-editor.org/errata/eid5875 |
| # |
| |
| from pyasn1.type import char |
| from pyasn1.type import constraint |
| from pyasn1.type import namedtype |
| from pyasn1.type import namedval |
| from pyasn1.type import univ |
| |
| from pyasn1_modules import rfc5652 |
| |
| import string |
| |
| MAX = float('inf') |
| |
| |
| class Algorithm(univ.Enumerated): |
| namedValues = namedval.NamedValues( |
| ('canonAlgorithmSimple', 0), |
| ('canonAlgorithmRelaxed', 1) |
| ) |
| |
| |
| class HeaderFieldStatus(univ.Integer): |
| namedValues = namedval.NamedValues( |
| ('duplicated', 0), |
| ('deleted', 1), |
| ('modified', 2) |
| ) |
| |
| |
| class HeaderFieldName(char.VisibleString): |
| subtypeSpec = ( |
| constraint.PermittedAlphabetConstraint(*string.printable) - |
| constraint.PermittedAlphabetConstraint(':') |
| ) |
| |
| |
| class HeaderFieldValue(char.UTF8String): |
| pass |
| |
| |
| class HeaderField(univ.Sequence): |
| componentType = namedtype.NamedTypes( |
| namedtype.NamedType('field-Name', HeaderFieldName()), |
| namedtype.NamedType('field-Value', HeaderFieldValue()), |
| namedtype.DefaultedNamedType('field-Status', |
| HeaderFieldStatus().subtype(value='duplicated')) |
| ) |
| |
| |
| class HeaderFields(univ.SequenceOf): |
| componentType = HeaderField() |
| subtypeSpec = constraint.ValueSizeConstraint(1, MAX) |
| |
| |
| class SecureHeaderFields(univ.Set): |
| componentType = namedtype.NamedTypes( |
| namedtype.NamedType('canonAlgorithm', Algorithm()), |
| namedtype.NamedType('secHeaderFields', HeaderFields()) |
| ) |
| |
| |
| id_aa = univ.ObjectIdentifier((1, 2, 840, 113549, 1, 9, 16, 2, )) |
| |
| id_aa_secureHeaderFieldsIdentifier = id_aa + (55, ) |
| |
| |
| |
| # Map of Attribute Type OIDs to Attributes added to the |
| # ones that are in rfc5652.py |
| |
| _cmsAttributesMapUpdate = { |
| id_aa_secureHeaderFieldsIdentifier: SecureHeaderFields(), |
| } |
| |
| rfc5652.cmsAttributesMap.update(_cmsAttributesMapUpdate) |
| |