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- #
- # This file is being contributed to pyasn1-modules software.
- #
- # Created by Russ Housley.
- # Modified by Russ Housley to add a map for use with opentypes.
- #
- # Copyright (c) 2019, Vigil Security, LLC
- # License: http://snmplabs.com/pyasn1/license.html
- #
- # Asymmetric Key Packages, which is essentially version 2 of
- # the PrivateKeyInfo structure in PKCS#8 in RFC 5208
- #
- # ASN.1 source from:
- # https://www.rfc-editor.org/rfc/rfc5958.txt
-
- from pyasn1.type import univ, constraint, namedtype, namedval, tag
-
- from pyasn1_modules import rfc5280
- from pyasn1_modules import rfc5652
-
-
- MAX = float('inf')
-
-
- class KeyEncryptionAlgorithmIdentifier(rfc5280.AlgorithmIdentifier):
- pass
-
-
- class PrivateKeyAlgorithmIdentifier(rfc5280.AlgorithmIdentifier):
- pass
-
-
- class EncryptedData(univ.OctetString):
- pass
-
-
- class EncryptedPrivateKeyInfo(univ.Sequence):
- componentType = namedtype.NamedTypes(
- namedtype.NamedType('encryptionAlgorithm', KeyEncryptionAlgorithmIdentifier()),
- namedtype.NamedType('encryptedData', EncryptedData())
- )
-
-
- class Version(univ.Integer):
- namedValues = namedval.NamedValues(('v1', 0), ('v2', 1))
-
-
- class PrivateKey(univ.OctetString):
- pass
-
-
- class Attributes(univ.SetOf):
- componentType = rfc5652.Attribute()
-
-
- class PublicKey(univ.BitString):
- pass
-
-
- # OneAsymmetricKey is essentially version 2 of PrivateKeyInfo.
- # If publicKey is present, then the version must be v2;
- # otherwise, the version should be v1.
-
- class OneAsymmetricKey(univ.Sequence):
- componentType = namedtype.NamedTypes(
- namedtype.NamedType('version', Version()),
- namedtype.NamedType('privateKeyAlgorithm', PrivateKeyAlgorithmIdentifier()),
- namedtype.NamedType('privateKey', PrivateKey()),
- namedtype.OptionalNamedType('attributes', Attributes().subtype(
- implicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatConstructed, 0))),
- namedtype.OptionalNamedType('publicKey', PublicKey().subtype(
- implicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatConstructed, 1)))
- )
-
-
- class PrivateKeyInfo(OneAsymmetricKey):
- pass
-
-
- # The CMS AsymmetricKeyPackage Content Type
-
- id_ct_KP_aKeyPackage = univ.ObjectIdentifier('2.16.840.1.101.2.1.2.78.5')
-
- class AsymmetricKeyPackage(univ.SequenceOf):
- pass
-
- AsymmetricKeyPackage.componentType = OneAsymmetricKey()
- AsymmetricKeyPackage.sizeSpec=constraint.ValueSizeConstraint(1, MAX)
-
-
- # Map of Content Type OIDs to Content Types is added to the
- # ones that are in rfc5652.py
-
- _cmsContentTypesMapUpdate = {
- id_ct_KP_aKeyPackage: AsymmetricKeyPackage(),
- }
-
- rfc5652.cmsContentTypesMap.update(_cmsContentTypesMapUpdate)
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