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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 rfc3852
from pyasn1_modules import rfc6402
class ContentInfoTestCase(unittest.TestCase):
pem_text = """\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"""
def setUp(self):
self.asn1Spec = rfc3852.ContentInfo()
def testDerCodec(self):
substrate = pem.readBase64fromText(self.pem_text)
layers = {
rfc3852.id_ct_contentInfo: rfc3852.ContentInfo(),
rfc3852.id_signedData: rfc3852.SignedData(),
rfc6402.id_cct_PKIData: rfc6402.PKIData()
}
getNextLayer = {
rfc3852.id_ct_contentInfo: lambda x: x['contentType'],
rfc3852.id_signedData: lambda x: x['encapContentInfo']['eContentType'],
rfc6402.id_cct_PKIData: lambda x: None
}
getNextSubstrate = {
rfc3852.id_ct_contentInfo: lambda x: x['content'],
rfc3852.id_signedData: lambda x: x['encapContentInfo']['eContent'],
rfc6402.id_cct_PKIData: lambda x: None
}
alg_oids = (
univ.ObjectIdentifier('1.3.14.3.2.26'),
univ.ObjectIdentifier('1.2.840.113549.1.1.1'),
univ.ObjectIdentifier('1.2.840.113549.1.1.5'),
univ.ObjectIdentifier('1.2.840.113549.1.1.11'),
)
encoded_null = der_encoder(univ.Null(""))
next_layer = rfc3852.id_ct_contentInfo
count = 0
while next_layer:
asn1Object, rest = der_decoder(substrate, asn1Spec=layers[next_layer])
self.assertFalse(rest)
self.assertTrue(asn1Object.prettyPrint())
self.assertEqual(substrate, der_encoder(asn1Object))
if next_layer == rfc3852.id_signedData:
for d in asn1Object['digestAlgorithms']:
self.assertIn(d['algorithm'], alg_oids)
self.assertEqual(encoded_null, d['parameters'])
count += 1
for si in asn1Object['signerInfos']:
self.assertIn(si['digestAlgorithm']['algorithm'], alg_oids)
self.assertEqual(
encoded_null, si['digestAlgorithm']['parameters'])
count += 1
self.assertIn(si['signatureAlgorithm']['algorithm'], alg_oids)
self.assertEqual(
encoded_null, si['signatureAlgorithm']['parameters'])
count += 1
if next_layer == rfc6402.id_cct_PKIData:
for req in asn1Object['reqSequence']:
cr = req['tcr']['certificationRequest']
self.assertIn(cr['signatureAlgorithm']['algorithm'], alg_oids)
self.assertEqual(
encoded_null, cr['signatureAlgorithm']['parameters'])
count += 1
cri_spki = cr['certificationRequestInfo']['subjectPublicKeyInfo']
self.assertIn(cri_spki['algorithm']['algorithm'], alg_oids)
self.assertEqual(
encoded_null, cri_spki['algorithm']['parameters'])
count += 1
substrate = getNextSubstrate[next_layer](asn1Object)
next_layer = getNextLayer[next_layer](asn1Object)
self.assertEqual(5, count)
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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