Code

Code/venv/lib/python3.13/site-packages/pyasn1_modules/rfc5958.py

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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)