# # 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.type import univ 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 rfc6211 class SignedMessageTestCase(unittest.TestCase): signed_message_pem_text = """\ MIIEyAYJKoZIhvcNAQcCoIIEuTCCBLUCAQExDTALBglghkgBZQMEAgIwUQYJKoZI 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+v0QSAv9rMife8tClafXWtDwwL8MS7oAh0ymT446Uizxx3PUxggHM MIIByAIBATBMMD8xCzAJBgNVBAYTAlVTMQswCQYDVQQIDAJWQTEQMA4GA1UEBwwH SGVybmRvbjERMA8GA1UECgwIQm9ndXMgQ0ECCQCls1QoG7BuOzALBglghkgBZQME AgKggfIwGAYJKoZIhvcNAQkDMQsGCSqGSIb3DQEHATAcBgkqhkiG9w0BCQUxDxcN MTkwNTI5MTgyMzE5WjAoBgkqhkiG9w0BCTQxGzAZMAsGCWCGSAFlAwQCAqEKBggq hkjOPQQDAzA/BgkqhkiG9w0BCQQxMgQwtuQipP2CZx7U96rGbUT06LC5jVFYccZW 5/CaNvpcrOPiChDm2vI3m4k300z5mSZsME0GCyqGSIb3DQEJEAIBMT4wPAQgx08h D2QnVwj1DoeRELNtdZ0PffW4BQIvcwwVc/goU6OAAQEwFTATgRFhbGljZUBleGFt cGxlLmNvbTAKBggqhkjOPQQDAwRnMGUCMQChIMyN1nTN+LLQcYJuhWT297vSKMDK fIUedSwWYrcSnSa1pq2s3Wue+pNBfecEjYECMGrUNu1UpWdafEJulP9Vz76qOPMa 5V/AnTEV5zkmzRle8sffN+nQ+SGkoos5zpI1kA== """ 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)) self.assertEqual(rfc5652.id_signedData, asn1Object['contentType']) sd, rest = der_decoder( asn1Object['content'], asn1Spec=rfc5652.SignedData()) self.assertFalse(rest) self.assertTrue(sd.prettyPrint()) self.assertEqual(asn1Object['content'], der_encoder(sd)) for sa in sd['signerInfos'][0]['signedAttrs']: sat = sa['attrType'] sav0 = sa['attrValues'][0] if sat in rfc6211.id_aa_cmsAlgorithmProtect: sav, rest = der_decoder( sav0, asn1Spec=rfc6211.CMSAlgorithmProtection()) self.assertFalse(rest) self.assertTrue(sav.prettyPrint()) self.assertEqual(sav0, der_encoder(sav)) 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(rfc5652.id_signedData, asn1Object['contentType']) 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'] == rfc6211.id_aa_cmsAlgorithmProtect: self.assertIn(sa['attrType'], rfc5652.cmsAttributesMap) sav0 = sa['attrValues'][0] digest_oid = univ.ObjectIdentifier('2.16.840.1.101.3.4.2.2') sig_oid = univ.ObjectIdentifier('1.2.840.10045.4.3.3') self.assertEqual( digest_oid, sav0['digestAlgorithm']['algorithm']) self.assertEqual( sig_oid, sav0['signatureAlgorithm']['algorithm']) suite = unittest.TestLoader().loadTestsFromModule(sys.modules[__name__]) if __name__ == '__main__': result = unittest.TextTestRunner(verbosity=2).run(suite) sys.exit(not result.wasSuccessful())