| # |
| # 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_modules import pem |
| from pyasn1_modules import rfc5652 |
| from pyasn1_modules import rfc7508 |
| |
| |
| class SignedMessageTestCase(unittest.TestCase): |
| signed_message_pem_text = """\ |
| MIIE/AYJKoZIhvcNAQcCoIIE7TCCBOkCAQExDTALBglghkgBZQMEAgIwUQYJKoZI |
| hvcNAQcBoEQEQkNvbnRlbnQtVHlwZTogdGV4dC9wbGFpbg0KDQpXYXRzb24sIGNv |
| bWUgaGVyZSAtIEkgd2FudCB0byBzZWUgeW91LqCCAnwwggJ4MIIB/qADAgECAgkA |
| pbNUKBuwbjswCgYIKoZIzj0EAwMwPzELMAkGA1UEBhMCVVMxCzAJBgNVBAgMAlZB |
| MRAwDgYDVQQHDAdIZXJuZG9uMREwDwYDVQQKDAhCb2d1cyBDQTAeFw0xOTA1Mjkx |
| NDQ1NDFaFw0yMDA1MjgxNDQ1NDFaMHAxCzAJBgNVBAYTAlVTMQswCQYDVQQIEwJW |
| QTEQMA4GA1UEBxMHSGVybmRvbjEQMA4GA1UEChMHRXhhbXBsZTEOMAwGA1UEAxMF |
| QWxpY2UxIDAeBgkqhkiG9w0BCQEWEWFsaWNlQGV4YW1wbGUuY29tMHYwEAYHKoZI |
| zj0CAQYFK4EEACIDYgAE+M2fBy/sRA6V1pKFqecRTE8+LuAHtZxes1wmJZrBBg+b |
| z7uYZfYQxI3dVB0YCSD6Mt3yXFlnmfBRwoqyArbjIBYrDbHBv2k8Csg2DhQ7qs/w |
| to8hMKoFgkcscqIbiV7Zo4GUMIGRMAsGA1UdDwQEAwIHgDBCBglghkgBhvhCAQ0E |
| NRYzVGhpcyBjZXJ0aWZpY2F0ZSBjYW5ub3QgYmUgdHJ1c3RlZCBmb3IgYW55IHB1 |
| cnBvc2UuMB0GA1UdDgQWBBTEuloOPnrjPIGw9AKqaLsW4JYONTAfBgNVHSMEGDAW |
| gBTyNds0BNqlVfK9aQOZsGLs4hUIwTAKBggqhkjOPQQDAwNoADBlAjBjuR/RNbgL |
| 3kRhmn+PJTeKaL9sh/oQgHOYTgLmSnv3+NDCkhfKuMNoo/tHrkmihYgCMQC94Mae |
| rDIrQpi0IDh+v0QSAv9rMife8tClafXWtDwwL8MS7oAh0ymT446Uizxx3PUxggIA |
| MIIB/AIBATBMMD8xCzAJBgNVBAYTAlVTMQswCQYDVQQIDAJWQTEQMA4GA1UEBwwH |
| SGVybmRvbjERMA8GA1UECgwIQm9ndXMgQ0ECCQCls1QoG7BuOzALBglghkgBZQME |
| AgKgggElMBgGCSqGSIb3DQEJAzELBgkqhkiG9w0BBwEwHAYJKoZIhvcNAQkFMQ8X |
| DTE5MDUyOTE4MjMxOVowKAYJKoZIhvcNAQk0MRswGTALBglghkgBZQMEAgKhCgYI |
| KoZIzj0EAwMwMQYLKoZIhvcNAQkQAjcxIjEgCgEBMBswGRoERnJvbQwRYWxpY2VA |
| ZXhhbXBsZS5jb20wPwYJKoZIhvcNAQkEMTIEMLbkIqT9gmce1Peqxm1E9OiwuY1R |
| WHHGVufwmjb6XKzj4goQ5tryN5uJN9NM+ZkmbDBNBgsqhkiG9w0BCRACATE+MDwE |
| IMdPIQ9kJ1cI9Q6HkRCzbXWdD331uAUCL3MMFXP4KFOjgAEBMBUwE4ERYWxpY2VA |
| ZXhhbXBsZS5jb20wCgYIKoZIzj0EAwMEZzBlAjEAuZ8SebvwMRvLPn9+s3VHFUNU |
| bEtkkWCao1uNm5TOzphK0NbxzOsD854aC5ReKPSDAjAm1U0siLQw5p4qzGwyxDw9 |
| 5AI5J8Mvy+icNubmfsd4ofvxdaECdhr4rvsSMwbOsFk= |
| """ |
| |
| def setUp(self): |
| self.asn1Spec = rfc5652.ContentInfo() |
| |
| def testDerCodec(self): |
| substrate = pem.readBase64fromText(self.signed_message_pem_text) |
| asn1Object, rest = der_decoder(substrate, asn1Spec=self.asn1Spec) |
| |
| self.assertFalse(rest) |
| self.assertTrue(asn1Object.prettyPrint()) |
| self.assertEqual(substrate, der_encoder(asn1Object)) |
| |
| secure_header_field_attr_found = False |
| |
| self.assertEqual(rfc5652.id_signedData, asn1Object['contentType']) |
| |
| sd, rest = der_decoder( |
| asn1Object['content'], asn1Spec=rfc5652.SignedData()) |
| |
| for sa in sd['signerInfos'][0]['signedAttrs']: |
| sat = sa['attrType'] |
| sav0 = sa['attrValues'][0] |
| |
| if sat == rfc7508.id_aa_secureHeaderFieldsIdentifier: |
| self.assertIn(sat, rfc5652.cmsAttributesMap) |
| sav, rest = der_decoder( |
| sav0, asn1Spec=rfc5652.cmsAttributesMap[sat]) |
| |
| self.assertFalse(rest) |
| self.assertTrue(sav.prettyPrint()) |
| self.assertEqual(sav0, der_encoder(sav)) |
| |
| from_field = rfc7508.HeaderFieldName('From') |
| alice_email = rfc7508.HeaderFieldValue('alice@example.com') |
| for shf in sav['secHeaderFields']: |
| if shf['field-Name'] == from_field: |
| self.assertEqual(alice_email, shf['field-Value']) |
| secure_header_field_attr_found = True |
| |
| self.assertTrue(secure_header_field_attr_found) |
| |
| def testOpenTypes(self): |
| substrate = pem.readBase64fromText(self.signed_message_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)) |
| self.assertIn(asn1Object['contentType'], rfc5652.cmsContentTypesMap) |
| self.assertEqual(asn1Object['contentType'], rfc5652.id_signedData) |
| |
| sd = asn1Object['content'] |
| |
| self.assertEqual( |
| rfc5652.CMSVersion().subtype(value='v1'), sd['version']) |
| |
| ect = sd['encapContentInfo']['eContentType'] |
| |
| self.assertIn(ect, rfc5652.cmsContentTypesMap) |
| self.assertEqual(rfc5652.id_data, ect) |
| |
| for sa in sd['signerInfos'][0]['signedAttrs']: |
| if sa['attrType'] == rfc7508.id_aa_secureHeaderFieldsIdentifier: |
| self.assertIn(sa['attrType'], rfc5652.cmsAttributesMap) |
| |
| secure_header_field_attr_found = False |
| for sa in sd['signerInfos'][0]['signedAttrs']: |
| if sa['attrType'] == rfc7508.id_aa_secureHeaderFieldsIdentifier: |
| self.assertIn(sa['attrType'], rfc5652.cmsAttributesMap) |
| from_field = rfc7508.HeaderFieldName('From') |
| alice_email = rfc7508.HeaderFieldValue('alice@example.com') |
| for shf in sa['attrValues'][0]['secHeaderFields']: |
| if shf['field-Name'] == from_field: |
| self.assertEqual(alice_email, shf['field-Value']) |
| secure_header_field_attr_found = True |
| |
| self.assertTrue(secure_header_field_attr_found) |
| |
| |
| suite = unittest.TestLoader().loadTestsFromModule(sys.modules[__name__]) |
| |
| if __name__ == '__main__': |
| result = unittest.TextTestRunner(verbosity=2).run(suite) |
| sys.exit(not result.wasSuccessful()) |
