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133 lines
5.6 KiB
133 lines
5.6 KiB
#
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# This file is part of pyasn1-modules software.
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#
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# Created by Russ Housley
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# Copyright (c) 2019, Vigil Security, LLC
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# License: http://snmplabs.com/pyasn1/license.html
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#
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import sys
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from pyasn1.type import univ
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from pyasn1.codec.der.decoder import decode as der_decode
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from pyasn1.codec.der.encoder import encode as der_encode
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from pyasn1_modules import pem
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from pyasn1_modules import rfc5652
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from pyasn1_modules import rfc7508
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try:
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import unittest2 as unittest
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except ImportError:
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import unittest
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class SignedMessageTestCase(unittest.TestCase):
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signed_message_pem_text = """\
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MIIE/AYJKoZIhvcNAQcCoIIE7TCCBOkCAQExDTALBglghkgBZQMEAgIwUQYJKoZI
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hvcNAQcBoEQEQkNvbnRlbnQtVHlwZTogdGV4dC9wbGFpbg0KDQpXYXRzb24sIGNv
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bWUgaGVyZSAtIEkgd2FudCB0byBzZWUgeW91LqCCAnwwggJ4MIIB/qADAgECAgkA
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pbNUKBuwbjswCgYIKoZIzj0EAwMwPzELMAkGA1UEBhMCVVMxCzAJBgNVBAgMAlZB
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MRAwDgYDVQQHDAdIZXJuZG9uMREwDwYDVQQKDAhCb2d1cyBDQTAeFw0xOTA1Mjkx
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NDQ1NDFaFw0yMDA1MjgxNDQ1NDFaMHAxCzAJBgNVBAYTAlVTMQswCQYDVQQIEwJW
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QTEQMA4GA1UEBxMHSGVybmRvbjEQMA4GA1UEChMHRXhhbXBsZTEOMAwGA1UEAxMF
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QWxpY2UxIDAeBgkqhkiG9w0BCQEWEWFsaWNlQGV4YW1wbGUuY29tMHYwEAYHKoZI
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zj0CAQYFK4EEACIDYgAE+M2fBy/sRA6V1pKFqecRTE8+LuAHtZxes1wmJZrBBg+b
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z7uYZfYQxI3dVB0YCSD6Mt3yXFlnmfBRwoqyArbjIBYrDbHBv2k8Csg2DhQ7qs/w
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to8hMKoFgkcscqIbiV7Zo4GUMIGRMAsGA1UdDwQEAwIHgDBCBglghkgBhvhCAQ0E
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NRYzVGhpcyBjZXJ0aWZpY2F0ZSBjYW5ub3QgYmUgdHJ1c3RlZCBmb3IgYW55IHB1
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cnBvc2UuMB0GA1UdDgQWBBTEuloOPnrjPIGw9AKqaLsW4JYONTAfBgNVHSMEGDAW
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gBTyNds0BNqlVfK9aQOZsGLs4hUIwTAKBggqhkjOPQQDAwNoADBlAjBjuR/RNbgL
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3kRhmn+PJTeKaL9sh/oQgHOYTgLmSnv3+NDCkhfKuMNoo/tHrkmihYgCMQC94Mae
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rDIrQpi0IDh+v0QSAv9rMife8tClafXWtDwwL8MS7oAh0ymT446Uizxx3PUxggIA
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MIIB/AIBATBMMD8xCzAJBgNVBAYTAlVTMQswCQYDVQQIDAJWQTEQMA4GA1UEBwwH
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SGVybmRvbjERMA8GA1UECgwIQm9ndXMgQ0ECCQCls1QoG7BuOzALBglghkgBZQME
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AgKgggElMBgGCSqGSIb3DQEJAzELBgkqhkiG9w0BBwEwHAYJKoZIhvcNAQkFMQ8X
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DTE5MDUyOTE4MjMxOVowKAYJKoZIhvcNAQk0MRswGTALBglghkgBZQMEAgKhCgYI
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KoZIzj0EAwMwMQYLKoZIhvcNAQkQAjcxIjEgCgEBMBswGRoERnJvbQwRYWxpY2VA
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ZXhhbXBsZS5jb20wPwYJKoZIhvcNAQkEMTIEMLbkIqT9gmce1Peqxm1E9OiwuY1R
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WHHGVufwmjb6XKzj4goQ5tryN5uJN9NM+ZkmbDBNBgsqhkiG9w0BCRACATE+MDwE
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IMdPIQ9kJ1cI9Q6HkRCzbXWdD331uAUCL3MMFXP4KFOjgAEBMBUwE4ERYWxpY2VA
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ZXhhbXBsZS5jb20wCgYIKoZIzj0EAwMEZzBlAjEAuZ8SebvwMRvLPn9+s3VHFUNU
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bEtkkWCao1uNm5TOzphK0NbxzOsD854aC5ReKPSDAjAm1U0siLQw5p4qzGwyxDw9
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5AI5J8Mvy+icNubmfsd4ofvxdaECdhr4rvsSMwbOsFk=
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"""
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def setUp(self):
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self.asn1Spec = rfc5652.ContentInfo()
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def testDerCodec(self):
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substrate = pem.readBase64fromText(self.signed_message_pem_text)
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asn1Object, rest = der_decode (substrate, asn1Spec=self.asn1Spec)
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assert not rest
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assert asn1Object.prettyPrint()
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assert der_encode(asn1Object) == substrate
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secure_header_field_attr_found = False
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assert asn1Object['contentType'] == rfc5652.id_signedData
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sd, rest = der_decode (asn1Object['content'], asn1Spec=rfc5652.SignedData())
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for sa in sd['signerInfos'][0]['signedAttrs']:
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sat = sa['attrType']
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sav0 = sa['attrValues'][0]
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if sat == rfc7508.id_aa_secureHeaderFieldsIdentifier:
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assert sat in rfc5652.cmsAttributesMap.keys()
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sav, rest = der_decode(sav0, asn1Spec=rfc5652.cmsAttributesMap[sat])
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assert not rest
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assert sav.prettyPrint()
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assert der_encode(sav) == sav0
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from_field = rfc7508.HeaderFieldName('From')
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alice_email = rfc7508.HeaderFieldValue('alice@example.com')
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for shf in sav['secHeaderFields']:
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if shf['field-Name'] == from_field:
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assert shf['field-Value'] == alice_email
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secure_header_field_attr_found = True
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assert secure_header_field_attr_found
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def testOpenTypes(self):
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substrate = pem.readBase64fromText(self.signed_message_pem_text)
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asn1Object, rest = der_decode(substrate,
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asn1Spec=self.asn1Spec, decodeOpenTypes=True)
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assert not rest
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assert asn1Object.prettyPrint()
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assert der_encode(asn1Object) == substrate
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assert asn1Object['contentType'] in rfc5652.cmsContentTypesMap.keys()
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assert asn1Object['contentType'] == rfc5652.id_signedData
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sd = asn1Object['content']
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assert sd['version'] == rfc5652.CMSVersion().subtype(value='v1')
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ect = sd['encapContentInfo']['eContentType']
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assert ect in rfc5652.cmsContentTypesMap.keys()
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assert ect == rfc5652.id_data
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for sa in sd['signerInfos'][0]['signedAttrs']:
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if sa['attrType'] == rfc7508.id_aa_secureHeaderFieldsIdentifier:
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assert sa['attrType'] in rfc5652.cmsAttributesMap.keys()
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secure_header_field_attr_found = False
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for sa in sd['signerInfos'][0]['signedAttrs']:
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if sa['attrType'] == rfc7508.id_aa_secureHeaderFieldsIdentifier:
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assert sa['attrType'] in rfc5652.cmsAttributesMap.keys()
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from_field = rfc7508.HeaderFieldName('From')
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alice_email = rfc7508.HeaderFieldValue('alice@example.com')
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for shf in sa['attrValues'][0]['secHeaderFields']:
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if shf['field-Name'] == from_field:
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assert shf['field-Value'] == alice_email
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secure_header_field_attr_found = True
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assert secure_header_field_attr_found
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suite = unittest.TestLoader().loadTestsFromModule(sys.modules[__name__])
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if __name__ == '__main__':
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import sys
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result = unittest.TextTestRunner(verbosity=2).run(suite)
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sys.exit(not result.wasSuccessful())
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