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#
# This file is part of pyasn1-modules software.
#
# Created by Russ Housley
# Copyright (c) 2019, Vigil Security, LLC
# License: https://www.pysnmp.com/pyasn1/license.html
#
import sys
import unittest
from pyasn1.codec.der.decoder import decode as der_decoder
from pyasn1.codec.der.encoder import encode as der_encoder
from pyasn1.compat.octets import str2octs
from pyasn1_modules import pem, rfc5652, rfc6032
class EncryptedKeyPkgTestCase(unittest.TestCase):
encrypted_key_pkg_pem_text = """\
MIIBBwYKYIZIAWUCAQJOAqCB+DCB9QIBAjCBzgYKYIZIAWUCAQJOAjAdBglghkgB
ZQMEASoEEN6HFteHMZ3DyeO35xIwWQOAgaCKTs0D0HguNzMhsLgiwG/Kw8OwX+GF
9/cZ1YVNesUTW/VsbXJcbTmFmWyfqZsM4DLBegIbrUEHQZnQRq6/NO4ricQdHApD
B/ip6RRqeN1yxMJLv1YN0zUOOIDBS2iMEjTLXZLWw3w22GN2JK7G+Lr4OH1NhMgU
ILJyh/RePmPseMwxvcJs7liEfkiSNMtDfEcpjtzA9bDe95GjhQRsiSByoR8wHQYJ
YIZIAWUCAQVCMRAEDnB0Zi1rZGMtODEyMzc0
"""
def setUp(self):
self.asn1Spec = rfc5652.ContentInfo()
def testDerCodec(self):
substrate = pem.readBase64fromText(self.encrypted_key_pkg_pem_text)
asn1Object, rest = der_decoder(substrate, asn1Spec=self.asn1Spec)
self.assertFalse(rest)
self.assertTrue(asn1Object.prettyPrint())
self.assertEqual(substrate, der_encoder(asn1Object))
self.assertEqual(rfc6032.id_ct_KP_encryptedKeyPkg, asn1Object["contentType"])
content, rest = der_decoder(
asn1Object["content"], rfc6032.EncryptedKeyPackage()
)
self.assertFalse(rest)
self.assertTrue(content.prettyPrint())
self.assertEqual(asn1Object["content"], der_encoder(content))
self.assertEqual("encrypted", content.getName())
eci = content["encrypted"]["encryptedContentInfo"]
self.assertEqual(rfc6032.id_ct_KP_encryptedKeyPkg, eci["contentType"])
attrType = content["encrypted"]["unprotectedAttrs"][0]["attrType"]
self.assertEqual(rfc6032.id_aa_KP_contentDecryptKeyID, attrType)
attrVal0 = content["encrypted"]["unprotectedAttrs"][0]["attrValues"][0]
keyid, rest = der_decoder(attrVal0, rfc6032.ContentDecryptKeyID())
self.assertFalse(rest)
self.assertTrue(keyid.prettyPrint())
self.assertEqual(attrVal0, der_encoder(keyid))
self.assertEqual(str2octs("ptf-kdc-812374"), keyid)
def testOpenTypes(self):
substrate = pem.readBase64fromText(self.encrypted_key_pkg_pem_text)
asn1Object, rest = der_decoder(
substrate, asn1Spec=self.asn1Spec, decodeOpenTypes=True
)
self.assertFalse(rest)
self.assertTrue(asn1Object.prettyPrint())
self.assertEqual(substrate, der_encoder(asn1Object))
self.assertIn(asn1Object["contentType"], rfc5652.cmsContentTypesMap)
eci = asn1Object["content"]["encrypted"]["encryptedContentInfo"]
self.assertIn(eci["contentType"], rfc5652.cmsContentTypesMap)
for attr in asn1Object["content"]["encrypted"]["unprotectedAttrs"]:
self.assertIn(attr["attrType"], rfc5652.cmsAttributesMap)
self.assertNotEqual("0x", attr["attrValues"][0].prettyPrint()[:2])
if attr["attrType"] == rfc6032.id_aa_KP_contentDecryptKeyID:
self.assertEqual(str2octs("ptf-kdc-812374"), attr["attrValues"][0])
suite = unittest.TestLoader().loadTestsFromModule(sys.modules[__name__])
if __name__ == "__main__":
unittest.TextTestRunner(verbosity=2).run(suite)
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