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#
# This file is part of pyasn1-modules software.
#
# Created by Russ Housley
# Copyright (c) 2019, Vigil Security, LLC
# License: http://snmplabs.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.type import univ
from pyasn1_modules import pem
from pyasn1_modules import rfc3537
from pyasn1_modules import rfc5751
class SMIMECapabilitiesTestCase(unittest.TestCase):
smime_capabilities_pem_text = "MCIwDwYLKoZIhvcNAQkQAwwFADAPBgsqhkiG9w0BCRADCwUA"
def setUp(self):
self.asn1Spec = rfc5751.SMIMECapabilities()
def testDerCodec(self):
alg_oid_list = [
rfc3537.id_alg_HMACwithAESwrap,
rfc3537.id_alg_HMACwith3DESwrap,
]
substrate = pem.readBase64fromText(self.smime_capabilities_pem_text)
asn1Object, rest = der_decoder(substrate, asn1Spec=self.asn1Spec)
self.assertFalse(rest)
self.assertTrue(asn1Object.prettyPrint())
self.assertEqual(substrate, der_encoder(asn1Object))
count = 0
for cap in asn1Object:
self.assertEqual(der_encoder(univ.Null("")), cap['parameters'])
self.assertTrue(cap['capabilityID'] in alg_oid_list)
count += 1
self.assertEqual(count, 2)
def testOpenTypes(self):
openTypesMap = {
rfc3537.id_alg_HMACwithAESwrap: univ.Null(""),
rfc3537.id_alg_HMACwith3DESwrap: univ.Null(""),
}
asn1Spec=rfc5751.SMIMECapabilities()
substrate = pem.readBase64fromText(self.smime_capabilities_pem_text)
asn1Object, rest = der_decoder(
substrate, asn1Spec=self.asn1Spec,
openTypes=openTypesMap, decodeOpenTypes=True)
self.assertFalse(rest)
self.assertTrue(asn1Object.prettyPrint())
self.assertEqual(substrate, der_encoder(asn1Object))
count = 0
for cap in asn1Object:
self.assertEqual(univ.Null(""), cap['parameters'])
self.assertTrue(cap['capabilityID'] in openTypesMap.keys())
count += 1
self.assertEqual(count, 2)
suite = unittest.TestLoader().loadTestsFromModule(sys.modules[__name__])
if __name__ == '__main__':
result = unittest.TextTestRunner(verbosity=2).run(suite)
sys.exit(not result.wasSuccessful())
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