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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, rfc3770, rfc5280, rfc5480
class CertificateTestCase(unittest.TestCase):
cert_pem_text = """\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"""
def setUp(self):
self.asn1Spec = rfc5280.Certificate()
def testDerCodec(self):
substrate = pem.readBase64fromText(self.cert_pem_text)
asn1Object, rest = der_decoder(substrate, asn1Spec=self.asn1Spec)
self.assertFalse(rest)
self.assertTrue(asn1Object.prettyPrint())
self.assertEqual(substrate, der_encoder(asn1Object))
def testOpenTypes(self):
substrate = pem.readBase64fromText(self.cert_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))
sig_alg = asn1Object["tbsCertificate"]["signature"]
self.assertEqual(rfc5480.ecdsa_with_SHA384, sig_alg["algorithm"])
self.assertFalse(sig_alg["parameters"].hasValue())
spki_alg = asn1Object["tbsCertificate"]["subjectPublicKeyInfo"]["algorithm"]
self.assertEqual(rfc5480.id_ecPublicKey, spki_alg["algorithm"])
self.assertEqual(rfc5480.secp384r1, spki_alg["parameters"]["namedCurve"])
extn_list = []
for extn in asn1Object["tbsCertificate"]["extensions"]:
extn_list.append(extn["extnID"])
if extn["extnID"] in rfc5280.certificateExtensionsMap.keys():
extnValue, rest = der_decoder(
extn["extnValue"],
asn1Spec=rfc5280.certificateExtensionsMap[extn["extnID"]],
)
self.assertEqual(extn["extnValue"], der_encoder(extnValue))
if extn["extnID"] == rfc3770.id_pe_wlanSSID:
self.assertIn(str2octs("Example"), extnValue)
if extn["extnID"] == rfc5280.id_ce_extKeyUsage:
self.assertIn(rfc3770.id_kp_eapOverLAN, extnValue)
self.assertIn(rfc3770.id_kp_eapOverPPP, extnValue)
self.assertIn(rfc3770.id_pe_wlanSSID, extn_list)
self.assertIn(rfc5280.id_ce_extKeyUsage, extn_list)
suite = unittest.TestLoader().loadTestsFromModule(sys.modules[__name__])
if __name__ == "__main__":
unittest.TextTestRunner(verbosity=2).run(suite)
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