| # -*- coding: utf-8 -*- |
| # |
| # Copyright 2011 Sybren A. Stüvel <[email protected]> |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # https://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| """Unittest for saving and loading keys.""" |
| |
| import base64 |
| import mock |
| import os.path |
| import pickle |
| import unittest |
| import warnings |
| |
| from rsa._compat import range |
| import rsa.key |
| |
| B64PRIV_DER = b'MC4CAQACBQDeKYlRAgMBAAECBQDHn4npAgMA/icCAwDfxwIDANcXAgInbwIDAMZt' |
| PRIVATE_DER = base64.standard_b64decode(B64PRIV_DER) |
| |
| B64PUB_DER = b'MAwCBQDeKYlRAgMBAAE=' |
| PUBLIC_DER = base64.standard_b64decode(B64PUB_DER) |
| |
| PRIVATE_PEM = b'''\ |
| -----BEGIN CONFUSING STUFF----- |
| Cruft before the key |
| |
| -----BEGIN RSA PRIVATE KEY----- |
| Comment: something blah |
| |
| ''' + B64PRIV_DER + b''' |
| -----END RSA PRIVATE KEY----- |
| |
| Stuff after the key |
| -----END CONFUSING STUFF----- |
| ''' |
| |
| CLEAN_PRIVATE_PEM = b'''\ |
| -----BEGIN RSA PRIVATE KEY----- |
| ''' + B64PRIV_DER + b''' |
| -----END RSA PRIVATE KEY----- |
| ''' |
| |
| PUBLIC_PEM = b'''\ |
| -----BEGIN CONFUSING STUFF----- |
| Cruft before the key |
| |
| -----BEGIN RSA PUBLIC KEY----- |
| Comment: something blah |
| |
| ''' + B64PUB_DER + b''' |
| -----END RSA PUBLIC KEY----- |
| |
| Stuff after the key |
| -----END CONFUSING STUFF----- |
| ''' |
| |
| CLEAN_PUBLIC_PEM = b'''\ |
| -----BEGIN RSA PUBLIC KEY----- |
| ''' + B64PUB_DER + b''' |
| -----END RSA PUBLIC KEY----- |
| ''' |
| |
| |
| class DerTest(unittest.TestCase): |
| """Test saving and loading DER keys.""" |
| |
| def test_load_private_key(self): |
| """Test loading private DER keys.""" |
| |
| key = rsa.key.PrivateKey.load_pkcs1(PRIVATE_DER, 'DER') |
| expected = rsa.key.PrivateKey(3727264081, 65537, 3349121513, 65063, 57287) |
| |
| self.assertEqual(expected, key) |
| self.assertEqual(key.exp1, 55063) |
| self.assertEqual(key.exp2, 10095) |
| self.assertEqual(key.coef, 50797) |
| |
| @mock.patch('pyasn1.codec.der.decoder.decode') |
| def test_load_malformed_private_key(self, der_decode): |
| """Test loading malformed private DER keys.""" |
| |
| # Decode returns an invalid exp2 value. |
| der_decode.return_value = ( |
| [0, 3727264081, 65537, 3349121513, 65063, 57287, 55063, 0, 50797], |
| 0, |
| ) |
| |
| with warnings.catch_warnings(record=True) as w: |
| # Always print warnings |
| warnings.simplefilter('always') |
| |
| # Load 3 keys |
| for _ in range(3): |
| key = rsa.key.PrivateKey.load_pkcs1(PRIVATE_DER, 'DER') |
| |
| # Check that 3 warnings were generated. |
| self.assertEqual(3, len(w)) |
| |
| for warning in w: |
| self.assertTrue(issubclass(warning.category, UserWarning)) |
| self.assertIn('malformed', str(warning.message)) |
| |
| # Check that we are creating the key with correct values |
| self.assertEqual(key.exp1, 55063) |
| self.assertEqual(key.exp2, 10095) |
| self.assertEqual(key.coef, 50797) |
| |
| def test_save_private_key(self): |
| """Test saving private DER keys.""" |
| |
| key = rsa.key.PrivateKey(3727264081, 65537, 3349121513, 65063, 57287) |
| der = key.save_pkcs1('DER') |
| |
| self.assertIsInstance(der, bytes) |
| self.assertEqual(PRIVATE_DER, der) |
| |
| def test_load_public_key(self): |
| """Test loading public DER keys.""" |
| |
| key = rsa.key.PublicKey.load_pkcs1(PUBLIC_DER, 'DER') |
| expected = rsa.key.PublicKey(3727264081, 65537) |
| |
| self.assertEqual(expected, key) |
| |
| def test_save_public_key(self): |
| """Test saving public DER keys.""" |
| |
| key = rsa.key.PublicKey(3727264081, 65537) |
| der = key.save_pkcs1('DER') |
| |
| self.assertIsInstance(der, bytes) |
| self.assertEqual(PUBLIC_DER, der) |
| |
| |
| class PemTest(unittest.TestCase): |
| """Test saving and loading PEM keys.""" |
| |
| def test_load_private_key(self): |
| """Test loading private PEM files.""" |
| |
| key = rsa.key.PrivateKey.load_pkcs1(PRIVATE_PEM, 'PEM') |
| expected = rsa.key.PrivateKey(3727264081, 65537, 3349121513, 65063, 57287) |
| |
| self.assertEqual(expected, key) |
| self.assertEqual(key.exp1, 55063) |
| self.assertEqual(key.exp2, 10095) |
| self.assertEqual(key.coef, 50797) |
| |
| def test_save_private_key(self): |
| """Test saving private PEM files.""" |
| |
| key = rsa.key.PrivateKey(3727264081, 65537, 3349121513, 65063, 57287) |
| pem = key.save_pkcs1('PEM') |
| |
| self.assertIsInstance(pem, bytes) |
| self.assertEqual(CLEAN_PRIVATE_PEM, pem) |
| |
| def test_load_public_key(self): |
| """Test loading public PEM files.""" |
| |
| key = rsa.key.PublicKey.load_pkcs1(PUBLIC_PEM, 'PEM') |
| expected = rsa.key.PublicKey(3727264081, 65537) |
| |
| self.assertEqual(expected, key) |
| |
| def test_save_public_key(self): |
| """Test saving public PEM files.""" |
| |
| key = rsa.key.PublicKey(3727264081, 65537) |
| pem = key.save_pkcs1('PEM') |
| |
| self.assertIsInstance(pem, bytes) |
| self.assertEqual(CLEAN_PUBLIC_PEM, pem) |
| |
| def test_load_from_disk(self): |
| """Test loading a PEM file from disk.""" |
| |
| fname = os.path.join(os.path.dirname(__file__), 'private.pem') |
| with open(fname, mode='rb') as privatefile: |
| keydata = privatefile.read() |
| privkey = rsa.key.PrivateKey.load_pkcs1(keydata) |
| |
| self.assertEqual(15945948582725241569, privkey.p) |
| self.assertEqual(14617195220284816877, privkey.q) |
| |
| |
| class PickleTest(unittest.TestCase): |
| """Test saving and loading keys by pickling.""" |
| |
| def test_private_key(self): |
| pk = rsa.key.PrivateKey(3727264081, 65537, 3349121513, 65063, 57287) |
| |
| pickled = pickle.dumps(pk) |
| unpickled = pickle.loads(pickled) |
| self.assertEqual(pk, unpickled) |
| |
| def test_public_key(self): |
| pk = rsa.key.PublicKey(3727264081, 65537) |
| |
| pickled = pickle.dumps(pk) |
| unpickled = pickle.loads(pickled) |
| |
| self.assertEqual(pk, unpickled) |
