dcd20c9375
This completes the consolidation of the two service account credentials implementations. In the process, also adding test coverage for some untested code paths within the crypto helpers.
185 lines
7.3 KiB
Python
185 lines
7.3 KiB
Python
# Copyright 2016 Google Inc. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Unit tests for oauth2client._pure_python_crypt."""
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import os
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import mock
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from pyasn1_modules import pem
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import rsa
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import six
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import unittest2
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from oauth2client._helpers import _from_bytes
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from oauth2client import _pure_python_crypt
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from oauth2client.crypt import RsaSigner
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from oauth2client.crypt import RsaVerifier
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class TestRsaVerifier(unittest2.TestCase):
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PUBLIC_KEY_FILENAME = os.path.join(os.path.dirname(__file__),
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'data', 'privatekey.pub')
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PUBLIC_CERT_FILENAME = os.path.join(os.path.dirname(__file__),
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'data', 'public_cert.pem')
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PRIVATE_KEY_FILENAME = os.path.join(os.path.dirname(__file__),
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'data', 'privatekey.pem')
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def _load_public_key_bytes(self):
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with open(self.PUBLIC_KEY_FILENAME, 'rb') as fh:
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return fh.read()
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def _load_public_cert_bytes(self):
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with open(self.PUBLIC_CERT_FILENAME, 'rb') as fh:
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return fh.read()
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def _load_private_key_bytes(self):
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with open(self.PRIVATE_KEY_FILENAME, 'rb') as fh:
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return fh.read()
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def test_verify_success(self):
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to_sign = b'foo'
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signer = RsaSigner.from_string(self._load_private_key_bytes())
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actual_signature = signer.sign(to_sign)
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verifier = RsaVerifier.from_string(self._load_public_key_bytes(),
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is_x509_cert=False)
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self.assertTrue(verifier.verify(to_sign, actual_signature))
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def test_verify_unicode_success(self):
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to_sign = u'foo'
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signer = RsaSigner.from_string(self._load_private_key_bytes())
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actual_signature = signer.sign(to_sign)
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verifier = RsaVerifier.from_string(self._load_public_key_bytes(),
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is_x509_cert=False)
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self.assertTrue(verifier.verify(to_sign, actual_signature))
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def test_verify_failure(self):
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verifier = RsaVerifier.from_string(self._load_public_key_bytes(),
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is_x509_cert=False)
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bad_signature1 = b''
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self.assertFalse(verifier.verify(b'foo', bad_signature1))
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bad_signature2 = b'a'
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self.assertFalse(verifier.verify(b'foo', bad_signature2))
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def test_from_string_pub_key(self):
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public_key = self._load_public_key_bytes()
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verifier = RsaVerifier.from_string(public_key, is_x509_cert=False)
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self.assertIsInstance(verifier, RsaVerifier)
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self.assertIsInstance(verifier._pubkey, rsa.key.PublicKey)
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def test_from_string_pub_key_unicode(self):
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public_key = _from_bytes(self._load_public_key_bytes())
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verifier = RsaVerifier.from_string(public_key, is_x509_cert=False)
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self.assertIsInstance(verifier, RsaVerifier)
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self.assertIsInstance(verifier._pubkey, rsa.key.PublicKey)
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def test_from_string_pub_cert(self):
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public_cert = self._load_public_cert_bytes()
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verifier = RsaVerifier.from_string(public_cert, is_x509_cert=True)
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self.assertIsInstance(verifier, RsaVerifier)
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self.assertIsInstance(verifier._pubkey, rsa.key.PublicKey)
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def test_from_string_pub_cert_unicode(self):
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public_cert = _from_bytes(self._load_public_cert_bytes())
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verifier = RsaVerifier.from_string(public_cert, is_x509_cert=True)
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self.assertIsInstance(verifier, RsaVerifier)
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self.assertIsInstance(verifier._pubkey, rsa.key.PublicKey)
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def test_from_string_pub_cert_failure(self):
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cert_bytes = self._load_public_cert_bytes()
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true_der = rsa.pem.load_pem(cert_bytes, 'CERTIFICATE')
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with mock.patch('rsa.pem.load_pem',
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return_value=true_der + b'extra') as load_pem:
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with self.assertRaises(ValueError):
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RsaVerifier.from_string(cert_bytes, is_x509_cert=True)
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load_pem.assert_called_once_with(cert_bytes, 'CERTIFICATE')
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class TestRsaSigner(unittest2.TestCase):
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PKCS1_KEY_FILENAME = os.path.join(os.path.dirname(__file__),
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'data', 'privatekey.pem')
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PKCS8_KEY_FILENAME = os.path.join(os.path.dirname(__file__),
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'data', 'pem_from_pkcs12.pem')
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PKCS12_KEY_FILENAME = os.path.join(os.path.dirname(__file__),
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'data', 'privatekey.p12')
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def _load_pkcs1_key_bytes(self):
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with open(self.PKCS1_KEY_FILENAME, 'rb') as fh:
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return fh.read()
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def _load_pkcs8_key_bytes(self):
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with open(self.PKCS8_KEY_FILENAME, 'rb') as fh:
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return fh.read()
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def _load_pkcs12_key_bytes(self):
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with open(self.PKCS12_KEY_FILENAME, 'rb') as fh:
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return fh.read()
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def test_from_string_pkcs1(self):
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key_bytes = self._load_pkcs1_key_bytes()
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signer = RsaSigner.from_string(key_bytes)
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self.assertIsInstance(signer, RsaSigner)
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self.assertIsInstance(signer._key, rsa.key.PrivateKey)
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def test_from_string_pkcs1_unicode(self):
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key_bytes = _from_bytes(self._load_pkcs1_key_bytes())
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signer = RsaSigner.from_string(key_bytes)
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self.assertIsInstance(signer, RsaSigner)
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self.assertIsInstance(signer._key, rsa.key.PrivateKey)
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def test_from_string_pkcs8(self):
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key_bytes = self._load_pkcs8_key_bytes()
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signer = RsaSigner.from_string(key_bytes)
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self.assertIsInstance(signer, RsaSigner)
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self.assertIsInstance(signer._key, rsa.key.PrivateKey)
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def test_from_string_pkcs8_extra_bytes(self):
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key_bytes = self._load_pkcs8_key_bytes()
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_, pem_bytes = pem.readPemBlocksFromFile(
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six.StringIO(_from_bytes(key_bytes)),
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_pure_python_crypt._PKCS8_MARKER)
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with mock.patch('pyasn1.codec.der.decoder.decode') as mock_decode:
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key_info, remaining = None, 'extra'
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mock_decode.return_value = (key_info, remaining)
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with self.assertRaises(ValueError):
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RsaSigner.from_string(key_bytes)
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# Verify mock was called.
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mock_decode.assert_called_once_with(
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pem_bytes, asn1Spec=_pure_python_crypt._PKCS8_SPEC)
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def test_from_string_pkcs8_unicode(self):
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key_bytes = _from_bytes(self._load_pkcs8_key_bytes())
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signer = RsaSigner.from_string(key_bytes)
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self.assertIsInstance(signer, RsaSigner)
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self.assertIsInstance(signer._key, rsa.key.PrivateKey)
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def test_from_string_pkcs12(self):
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key_bytes = self._load_pkcs12_key_bytes()
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with self.assertRaises(ValueError):
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RsaSigner.from_string(key_bytes)
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def test_from_string_bogus_key(self):
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key_bytes = 'bogus-key'
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with self.assertRaises(ValueError):
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RsaSigner.from_string(key_bytes)
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if __name__ == '__main__': # pragma: NO COVER
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unittest2.main()
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