tests/test_rfc4108.py

#
# This file is part of pyasn1-modules software.
#
# Copyright (c) 2019, Vigil Security, LLC
# License: http://snmplabs.com/pyasn1/license.html
#
import sys

from pyasn1.codec.der.decoder import decode as der_decode
from pyasn1.codec.der.encoder import encode as der_encode

from pyasn1.type import univ

from pyasn1_modules import pem
from pyasn1_modules import rfc5652
from pyasn1_modules import rfc4108

try:
    import unittest2 as unittest
except ImportError:
    import unittest


class CMSFirmwareWrapperTestCase(unittest.TestCase):
    pem_text = """\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"""

    def setUp(self):
        self.asn1Spec = rfc5652.ContentInfo()

    def testDerCodec(self):
        substrate = pem.readBase64fromText(self.pem_text)

        asn1Object, rest = der_decode(substrate, asn1Spec=self.asn1Spec)

        assert not rest
        assert asn1Object.prettyPrint()
        assert der_encode(asn1Object) == substrate

        assert asn1Object['contentType'] == rfc5652.id_signedData
        inner, rest = der_decode(asn1Object['content'], asn1Spec=rfc5652.SignedData())

        assert inner['encapContentInfo']['eContentType'] == rfc4108.id_ct_firmwarePackage
        assert inner['encapContentInfo']['eContent']

        attribute_list = [ ]
        for attr in inner['signerInfos'][0]['signedAttrs']:
            attribute_list.append(attr['attrType'])
            if attr['attrType'] == rfc4108.id_aa_targetHardwareIDs:
                av, rest = der_decode(attr['attrValues'][0],
                    asn1Spec=rfc4108.TargetHardwareIdentifiers())
                assert len(av) == 2
                for oid in av:
                    assert '1.3.6.1.4.1.221121.1.1.' in oid.prettyPrint()

        assert rfc5652.id_contentType in attribute_list
        assert rfc5652.id_messageDigest in attribute_list
        assert rfc4108.id_aa_targetHardwareIDs in attribute_list
        assert rfc4108.id_aa_fwPkgMessageDigest in attribute_list

    def testOpenTypes(self):
        substrate = pem.readBase64fromText(self.pem_text)
        asn1Object, rest = der_decode(substrate,
            asn1Spec=self.asn1Spec,
            decodeOpenTypes=True)
        assert not rest
        assert asn1Object.prettyPrint()
        assert der_encode(asn1Object) == substrate

        assert asn1Object['contentType'] == rfc5652.id_signedData
        sd_eci = asn1Object['content']['encapContentInfo']
        assert sd_eci['eContentType'] == rfc4108.id_ct_firmwarePackage
        assert sd_eci['eContent'].hasValue()

        for attr in asn1Object['content']['signerInfos'][0]['signedAttrs']:
            assert attr['attrType'] in rfc5652.cmsAttributesMap.keys()
            if attr['attrType'] == rfc4108.id_aa_targetHardwareIDs:
               for oid in attr['attrValues'][0]:
                   assert '1.3.6.1.4.1.221121.1.1.' in oid.prettyPrint()


suite = unittest.TestLoader().loadTestsFromModule(sys.modules[__name__])

if __name__ == '__main__':
    import sys

    result = unittest.TextTestRunner(verbosity=2).run(suite)
    sys.exit(not result.wasSuccessful())