Add google.auth.crypt (#6)
diff --git a/docs/reference/google.auth.crypt.rst b/docs/reference/google.auth.crypt.rst
new file mode 100644
index 0000000..7f8c0f8
--- /dev/null
+++ b/docs/reference/google.auth.crypt.rst
@@ -0,0 +1,7 @@
+google.auth.crypt module
+========================
+
+.. automodule:: google.auth.crypt
+ :members:
+ :undoc-members:
+ :show-inheritance:
diff --git a/docs/reference/google.auth.rst b/docs/reference/google.auth.rst
index 0533449..4c39cb9 100644
--- a/docs/reference/google.auth.rst
+++ b/docs/reference/google.auth.rst
@@ -6,3 +6,10 @@
:undoc-members:
:show-inheritance:
+Submodules
+----------
+
+.. toctree::
+
+ google.auth.crypt
+
diff --git a/docs/reference/google.oauth2.rst b/docs/reference/google.oauth2.rst
new file mode 100644
index 0000000..fb67d27
--- /dev/null
+++ b/docs/reference/google.oauth2.rst
@@ -0,0 +1,8 @@
+google.oauth2 package
+=====================
+
+.. automodule:: google.oauth2
+ :members:
+ :undoc-members:
+ :show-inheritance:
+
diff --git a/google/auth/_helpers.py b/google/auth/_helpers.py
new file mode 100644
index 0000000..2d3b653
--- /dev/null
+++ b/google/auth/_helpers.py
@@ -0,0 +1,65 @@
+# Copyright 2015 Google Inc.
+#
+# 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
+#
+# http://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.
+
+"""Helper functions for commonly used utilities."""
+
+import six
+
+
+def to_bytes(value, encoding='utf-8'):
+ """Converts a string value to bytes, if necessary.
+
+ Unfortunately, ``six.b`` is insufficient for this task since in
+ Python 2 because it does not modify ``unicode`` objects.
+
+ Args:
+ value (Union[str, bytes]): The value to be converted.
+ encoding (str): The encoding to use to convert unicode to bytes.
+ Defaults to "utf-8".
+
+ Returns:
+ bytes: The original value converted to bytes (if unicode) or as
+ passed in if it started out as bytes.
+
+ Raises:
+ ValueError: If the value could not be converted to bytes.
+ """
+ result = (value.encode(encoding)
+ if isinstance(value, six.text_type) else value)
+ if isinstance(result, six.binary_type):
+ return result
+ else:
+ raise ValueError('{0!r} could not be converted to bytes'.format(value))
+
+
+def from_bytes(value):
+ """Converts bytes to a string value, if necessary.
+
+ Args:
+ value (Union[str, bytes]): The value to be converted.
+
+ Returns:
+ str: The original value converted to unicode (if bytes) or as passed in
+ if it started out as unicode.
+
+ Raises:
+ ValueError: If the value could not be converted to unicode.
+ """
+ result = (value.decode('utf-8')
+ if isinstance(value, six.binary_type) else value)
+ if isinstance(result, six.text_type):
+ return result
+ else:
+ raise ValueError(
+ '{0!r} could not be converted to unicode'.format(value))
diff --git a/google/auth/crypt.py b/google/auth/crypt.py
new file mode 100644
index 0000000..d347600
--- /dev/null
+++ b/google/auth/crypt.py
@@ -0,0 +1,229 @@
+# Copyright 2016 Google Inc.
+#
+# 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
+#
+# http://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.
+
+"""Cryptography helpers for verifying and signing messages.
+
+Uses the ``rsa``, ``pyasn1`` and ``pyasn1_modules`` packages
+to parse PEM files storing PKCS#1 or PKCS#8 keys as well as
+certificates. There is no support for p12 files.
+
+The simplest way to verify signatures is using :func:`verify_signature`::
+
+ cert = open('certs.pem').read()
+ valid = crypt.verify_signature(message, signature, cert)
+
+If you're going to verify many messages with the same certificate, you can use
+:class:`Verifier`::
+
+ cert = open('certs.pem').read()
+ verifier = crypt.Verifier.from_string(cert)
+ valid = verifier.verify(message, signature)
+
+
+To sign messages use :class:`Signer` with a private key::
+
+ private_key = open('private_key.pem').read()
+ signer = crypt.Signer(private_key)
+ signature = signer.sign(message)
+
+"""
+
+from pyasn1.codec.der import decoder
+from pyasn1_modules import pem
+from pyasn1_modules.rfc2459 import Certificate
+from pyasn1_modules.rfc5208 import PrivateKeyInfo
+import rsa
+import six
+
+from google.auth import _helpers
+
+_POW2 = (128, 64, 32, 16, 8, 4, 2, 1)
+_CERTIFICATE_MARKER = b'-----BEGIN CERTIFICATE-----'
+_PKCS1_MARKER = ('-----BEGIN RSA PRIVATE KEY-----',
+ '-----END RSA PRIVATE KEY-----')
+_PKCS8_MARKER = ('-----BEGIN PRIVATE KEY-----',
+ '-----END PRIVATE KEY-----')
+_PKCS8_SPEC = PrivateKeyInfo()
+
+
+def _bit_list_to_bytes(bit_list):
+ """Converts an iterable of 1s and 0s to bytes.
+
+ Combines the list 8 at a time, treating each group of 8 bits
+ as a single byte.
+
+ Args:
+ bit_list (Sequence): Sequence of 1s and 0s.
+
+ Returns:
+ bytes: The decoded bytes.
+ """
+ num_bits = len(bit_list)
+ byte_vals = bytearray()
+ for start in six.moves.xrange(0, num_bits, 8):
+ curr_bits = bit_list[start:start + 8]
+ char_val = sum(val * digit
+ for val, digit in six.moves.zip(_POW2, curr_bits))
+ byte_vals.append(char_val)
+ return bytes(byte_vals)
+
+
+class Verifier(object):
+ """This object is used to verify cryptographic signatures.
+
+ Args:
+ public_key (rsa.key.PublicKey): The public key used to verify
+ signatures.
+ """
+
+ def __init__(self, public_key):
+ self._pubkey = public_key
+
+ def verify(self, message, signature):
+ """Verifies a message against a cryptographic signature.
+
+ Args:
+ message (Union[str, bytes]): The message to verify.
+ signature (Union[str, bytes]): The cryptography signature to check.
+
+ Returns:
+ bool: True if message was signed by the private key associated
+ with the public key that this object was constructed with.
+ """
+ message = _helpers.to_bytes(message)
+ try:
+ return rsa.pkcs1.verify(message, signature, self._pubkey)
+ except (ValueError, rsa.pkcs1.VerificationError):
+ return False
+
+ @classmethod
+ def from_string(cls, public_key):
+ """Construct an Verifier instance from a public key or public
+ certificate string.
+
+ Args:
+ public_key (Union[str, bytes]): The public key in PEM format or the
+ x509 public key certificate.
+
+ Returns:
+ Verifier: The constructed verifier.
+
+ Raises:
+ ValueError: If the public_key can't be parsed.
+ """
+ public_key = _helpers.to_bytes(public_key)
+ is_x509_cert = _CERTIFICATE_MARKER in public_key
+
+ # If this is a certificate, extract the public key info.
+ if is_x509_cert:
+ der = rsa.pem.load_pem(public_key, 'CERTIFICATE')
+ asn1_cert, remaining = decoder.decode(der, asn1Spec=Certificate())
+ if remaining != b'':
+ raise ValueError('Unused bytes', remaining)
+
+ cert_info = asn1_cert['tbsCertificate']['subjectPublicKeyInfo']
+ key_bytes = _bit_list_to_bytes(cert_info['subjectPublicKey'])
+ pubkey = rsa.PublicKey.load_pkcs1(key_bytes, 'DER')
+ else:
+ pubkey = rsa.PublicKey.load_pkcs1(public_key, 'PEM')
+ return cls(pubkey)
+
+
+def verify_signature(message, signature, certs):
+ """Verify a cryptographic signature.
+
+ Checks that the provided ``signature`` was generated from ``bytes`` using
+ the private key associated with the ``cert``.
+
+ Args:
+ message (Union[str, bytes]): The plaintext message.
+ signature (Union[str, bytes]): The cryptographic signature to check.
+ certs (Union[Sequence, str, bytes]): The certificate or certificates
+ to use to check the signature.
+
+ Returns:
+ bool: True if the signature is valid, otherwise False.
+ """
+ if isinstance(certs, (six.text_type, six.binary_type)):
+ certs = [certs]
+
+ for cert in certs:
+ verifier = Verifier.from_string(cert)
+ if verifier.verify(message, signature):
+ return True
+ return False
+
+
+class Signer(object):
+ """Signs messages with a private key.
+
+ Args:
+ private_key (rsa.key.PrivateKey): The private key to sign with.
+ key_id (str): Optional key ID used to identify this private key. This
+ can be useful to associate the private key with its associated
+ public key or certificate.
+ """
+
+ def __init__(self, private_key, key_id=None):
+ self._key = private_key
+ self.key_id = key_id
+
+ def sign(self, message):
+ """Signs a message.
+
+ Args:
+ message (Union[str, bytes]): The message to be signed.
+
+ Returns:
+ bytes: The signature of the message for the given key.
+ """
+ message = _helpers.to_bytes(message)
+ return rsa.pkcs1.sign(message, self._key, 'SHA-256')
+
+ @classmethod
+ def from_string(cls, key, key_id=None):
+ """Construct an Signer instance from a private key in PEM format.
+
+ Args:
+ key (str): Private key in PEM format.
+ key_id (str): An optional key id used to identify the private key.
+
+ Returns:
+ Signer: The constructed signer.
+
+ Raises:
+ ValueError: If the key cannot be parsed as PKCS#1 or PKCS#8 in
+ PEM format.
+ """
+ key = _helpers.from_bytes(key) # PEM expects str in Python 3
+ marker_id, key_bytes = pem.readPemBlocksFromFile(
+ six.StringIO(key), _PKCS1_MARKER, _PKCS8_MARKER)
+
+ # Key is in pkcs1 format.
+ if marker_id == 0:
+ private_key = rsa.key.PrivateKey.load_pkcs1(
+ key_bytes, format='DER')
+ # Key is in pkcs8.
+ elif marker_id == 1:
+ key_info, remaining = decoder.decode(
+ key_bytes, asn1Spec=_PKCS8_SPEC)
+ if remaining != b'':
+ raise ValueError('Unused bytes', remaining)
+ private_key_info = key_info.getComponentByName('privateKey')
+ private_key = rsa.key.PrivateKey.load_pkcs1(
+ private_key_info.asOctets(), format='DER')
+ else:
+ raise ValueError('No key could be detected.')
+
+ return cls(private_key, key_id=key_id)
diff --git a/tests/data/other_cert.pem b/tests/data/other_cert.pem
new file mode 100644
index 0000000..6895d1e
--- /dev/null
+++ b/tests/data/other_cert.pem
@@ -0,0 +1,33 @@
+-----BEGIN CERTIFICATE-----
+MIIFtTCCA52gAwIBAgIJAPBsLZmNGfKtMA0GCSqGSIb3DQEBBQUAMEUxCzAJBgNV
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+-----END CERTIFICATE-----
diff --git a/tests/data/pem_from_pkcs12.pem b/tests/data/pem_from_pkcs12.pem
new file mode 100644
index 0000000..2d77e10
--- /dev/null
+++ b/tests/data/pem_from_pkcs12.pem
@@ -0,0 +1,32 @@
+Bag Attributes
+ friendlyName: key
+ localKeyID: 22 7E 04 FC 64 48 20 83 1E C1 BD E3 F5 2F 44 7D EA 99 A5 BC
+Key Attributes: <No Attributes>
+-----BEGIN PRIVATE KEY-----
+MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQDh6PSnttDsv+vi
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+VL5h7N0VstYhGgycuPpcIUQa
+-----END PRIVATE KEY-----
diff --git a/tests/data/privatekey.p12 b/tests/data/privatekey.p12
new file mode 100644
index 0000000..c369ecb
--- /dev/null
+++ b/tests/data/privatekey.p12
Binary files differ
diff --git a/tests/data/privatekey.pem b/tests/data/privatekey.pem
new file mode 100644
index 0000000..5744354
--- /dev/null
+++ b/tests/data/privatekey.pem
@@ -0,0 +1,27 @@
+-----BEGIN RSA PRIVATE KEY-----
+MIIEpAIBAAKCAQEA4ej0p7bQ7L/r4rVGUz9RN4VQWoej1Bg1mYWIDYslvKrk1gpj
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+soBjNHV4msLzdNqbjrAqgz6M/n8Ztg8D2PNHMNDNJPVHjJwcR7duSTA6w2p/4k28
+bvvk/45Ta3XmzlxZcZSOct3O31Cw0i2XDVc018IY5be8qendDYM08icNo7vQYkRH
+504kQQKBgQDjx60zpz8ozvm1XAj0wVhi7GwXe+5lTxiLi9Fxq721WDxPMiHDW2XL
+YXfFVy/9/GIMvEiGYdmarK1NW+VhWl1DC5xhDg0kvMfxplt4tynoq1uTsQTY31Mx
+BeF5CT/JuNYk3bEBF0H/Q3VGO1/ggVS+YezdFbLWIRoMnLj6XCFEGg==
+-----END RSA PRIVATE KEY-----
diff --git a/tests/data/privatekey.pub b/tests/data/privatekey.pub
new file mode 100644
index 0000000..11fdaa4
--- /dev/null
+++ b/tests/data/privatekey.pub
@@ -0,0 +1,8 @@
+-----BEGIN RSA PUBLIC KEY-----
+MIIBCgKCAQEA4ej0p7bQ7L/r4rVGUz9RN4VQWoej1Bg1mYWIDYslvKrk1gpj7wZg
+kdmM7oVK2OfgrSj/FCTkInKPqaCR0gD7K80q+mLBrN3PUkDrJQZpvRZIff3/xmVU
+1WeruQLFJjnFb2dqu0s/FY/2kWiJtBCakXvXEOb7zfbINuayL+MSsCGSdVYsSliS
+5qQpgyDap+8b5fpXZVJkq92hrcNtbkg7hCYUJczt8n9hcCTJCfUpApvaFQ18pe+z
+pyl4+WzkP66I28hniMQyUlA1hBiskT7qiouq0m8IOodhv2fagSZKjOTTU2xkSBc/
+/fy3ZpsL7WqgsZS7Q+0VRK8gKfqkxg5OYQIDAQAB
+-----END RSA PUBLIC KEY-----
diff --git a/tests/data/public_cert.pem b/tests/data/public_cert.pem
new file mode 100644
index 0000000..7af6ca3
--- /dev/null
+++ b/tests/data/public_cert.pem
@@ -0,0 +1,19 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
diff --git a/tests/test__helpers.py b/tests/test__helpers.py
new file mode 100644
index 0000000..b7e0bab
--- /dev/null
+++ b/tests/test__helpers.py
@@ -0,0 +1,50 @@
+# Copyright 2016 Google Inc.
+#
+# 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
+#
+# http://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.
+
+
+import pytest
+
+from google.auth import _helpers
+
+
+def test_to_bytes_with_bytes():
+ value = b'bytes-val'
+ assert _helpers.to_bytes(value) == value
+
+
+def test_to_bytes_with_unicode():
+ value = u'string-val'
+ encoded_value = b'string-val'
+ assert _helpers.to_bytes(value) == encoded_value
+
+
+def test_to_bytes_with_nonstring_type():
+ with pytest.raises(ValueError):
+ _helpers.to_bytes(object())
+
+
+def test_from_bytes_with_unicode():
+ value = u'bytes-val'
+ assert _helpers.from_bytes(value) == value
+
+
+def test_from_bytes_with_bytes():
+ value = b'string-val'
+ decoded_value = u'string-val'
+ assert _helpers.from_bytes(value) == decoded_value
+
+
+def test_from_bytes_with_nonstring_type():
+ with pytest.raises(ValueError):
+ _helpers.from_bytes(object())
diff --git a/tests/test_crypt.py b/tests/test_crypt.py
new file mode 100644
index 0000000..9069216
--- /dev/null
+++ b/tests/test_crypt.py
@@ -0,0 +1,186 @@
+# Copyright 2016 Google Inc.
+#
+# 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
+#
+# http://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.
+
+import os
+
+import mock
+from pyasn1_modules import pem
+import pytest
+import rsa
+import six
+
+from google.auth import _helpers
+from google.auth import crypt
+
+
+DATA_DIR = os.path.join(os.path.dirname(__file__), 'data')
+
+# To generate privatekey.pem, privatekey.pub, and public_cert.pem:
+# $ openssl req -new -newkey rsa:1024 -x509 -nodes -out public_cert.pem \
+# > -keyout privatekey.pem
+# $ openssl rsa -in privatekey.pem -pubout -out privatekey.pub
+
+with open(os.path.join(DATA_DIR, 'privatekey.pem'), 'rb') as fh:
+ PRIVATE_KEY_BYTES = fh.read()
+ PKCS1_KEY_BYTES = PRIVATE_KEY_BYTES
+
+with open(os.path.join(DATA_DIR, 'privatekey.pub'), 'rb') as fh:
+ PUBLIC_KEY_BYTES = fh.read()
+
+with open(os.path.join(DATA_DIR, 'public_cert.pem'), 'rb') as fh:
+ PUBLIC_CERT_BYTES = fh.read()
+
+# To generate other_cert.pem:
+# $ openssl req -new -newkey rsa:1024 -x509 -nodes -out other_cert.pem
+
+with open(os.path.join(DATA_DIR, 'other_cert.pem'), 'rb') as fh:
+ OTHER_CERT_BYTES = fh.read()
+
+# To generate pem_from_pkcs12.pem and privatekey.p12:
+# $ openssl pkcs12 -export -out privatekey.p12 -inkey privatekey.pem \
+# > -in public_cert.pem
+# $ openssl pkcs12 -in privatekey.p12 -nocerts -nodes \
+# > -out pem_from_pkcs12.pem
+
+with open(os.path.join(DATA_DIR, 'pem_from_pkcs12.pem'), 'rb') as fh:
+ PKCS8_KEY_BYTES = fh.read()
+
+with open(os.path.join(DATA_DIR, 'privatekey.p12'), 'rb') as fh:
+ PKCS12_KEY_BYTES = fh.read()
+
+
+def test_verify_signature():
+ to_sign = b'foo'
+ signer = crypt.Signer.from_string(PRIVATE_KEY_BYTES)
+ signature = signer.sign(to_sign)
+
+ assert crypt.verify_signature(
+ to_sign, signature, PUBLIC_CERT_BYTES)
+
+ # List of certs
+ assert crypt.verify_signature(
+ to_sign, signature, [OTHER_CERT_BYTES, PUBLIC_CERT_BYTES])
+
+
+def test_verify_signature_failure():
+ to_sign = b'foo'
+ signer = crypt.Signer.from_string(PRIVATE_KEY_BYTES)
+ signature = signer.sign(to_sign)
+
+ assert not crypt.verify_signature(
+ to_sign, signature, OTHER_CERT_BYTES)
+
+
+class TestVerifier(object):
+ def test_verify_success(self):
+ to_sign = b'foo'
+ signer = crypt.Signer.from_string(PRIVATE_KEY_BYTES)
+ actual_signature = signer.sign(to_sign)
+
+ verifier = crypt.Verifier.from_string(PUBLIC_KEY_BYTES)
+ assert verifier.verify(to_sign, actual_signature)
+
+ def test_verify_unicode_success(self):
+ to_sign = u'foo'
+ signer = crypt.Signer.from_string(PRIVATE_KEY_BYTES)
+ actual_signature = signer.sign(to_sign)
+
+ verifier = crypt.Verifier.from_string(PUBLIC_KEY_BYTES)
+ assert verifier.verify(to_sign, actual_signature)
+
+ def test_verify_failure(self):
+ verifier = crypt.Verifier.from_string(PUBLIC_KEY_BYTES)
+ bad_signature1 = b''
+ assert not verifier.verify(b'foo', bad_signature1)
+ bad_signature2 = b'a'
+ assert not verifier.verify(b'foo', bad_signature2)
+
+ def test_from_string_pub_key(self):
+ verifier = crypt.Verifier.from_string(PUBLIC_KEY_BYTES)
+ assert isinstance(verifier, crypt.Verifier)
+ assert isinstance(verifier._pubkey, rsa.key.PublicKey)
+
+ def test_from_string_pub_key_unicode(self):
+ public_key = _helpers.from_bytes(PUBLIC_KEY_BYTES)
+ verifier = crypt.Verifier.from_string(public_key)
+ assert isinstance(verifier, crypt.Verifier)
+ assert isinstance(verifier._pubkey, rsa.key.PublicKey)
+
+ def test_from_string_pub_cert(self):
+ verifier = crypt.Verifier.from_string(PUBLIC_CERT_BYTES)
+ assert isinstance(verifier, crypt.Verifier)
+ assert isinstance(verifier._pubkey, rsa.key.PublicKey)
+
+ def test_from_string_pub_cert_unicode(self):
+ public_cert = _helpers.from_bytes(PUBLIC_CERT_BYTES)
+ verifier = crypt.Verifier.from_string(public_cert)
+ assert isinstance(verifier, crypt.Verifier)
+ assert isinstance(verifier._pubkey, rsa.key.PublicKey)
+
+ def test_from_string_pub_cert_failure(self):
+ cert_bytes = PUBLIC_CERT_BYTES
+ true_der = rsa.pem.load_pem(cert_bytes, 'CERTIFICATE')
+ with mock.patch('rsa.pem.load_pem',
+ return_value=true_der + b'extra') as load_pem:
+ with pytest.raises(ValueError):
+ crypt.Verifier.from_string(cert_bytes)
+ load_pem.assert_called_once_with(cert_bytes, 'CERTIFICATE')
+
+
+class TestSigner(object):
+ def test_from_string_pkcs1(self):
+ signer = crypt.Signer.from_string(PKCS1_KEY_BYTES)
+ assert isinstance(signer, crypt.Signer)
+ assert isinstance(signer._key, rsa.key.PrivateKey)
+
+ def test_from_string_pkcs1_unicode(self):
+ key_bytes = _helpers.from_bytes(PKCS1_KEY_BYTES)
+ signer = crypt.Signer.from_string(key_bytes)
+ assert isinstance(signer, crypt.Signer)
+ assert isinstance(signer._key, rsa.key.PrivateKey)
+
+ def test_from_string_pkcs8(self):
+ signer = crypt.Signer.from_string(PKCS8_KEY_BYTES)
+ assert isinstance(signer, crypt.Signer)
+ assert isinstance(signer._key, rsa.key.PrivateKey)
+
+ def test_from_string_pkcs8_extra_bytes(self):
+ key_bytes = PKCS8_KEY_BYTES
+ _, pem_bytes = pem.readPemBlocksFromFile(
+ six.StringIO(_helpers.from_bytes(key_bytes)),
+ crypt._PKCS8_MARKER)
+
+ with mock.patch('pyasn1.codec.der.decoder.decode') as mock_decode:
+ key_info, remaining = None, 'extra'
+ mock_decode.return_value = (key_info, remaining)
+ with pytest.raises(ValueError):
+ crypt.Signer.from_string(key_bytes)
+ # Verify mock was called.
+ mock_decode.assert_called_once_with(
+ pem_bytes, asn1Spec=crypt._PKCS8_SPEC)
+
+ def test_from_string_pkcs8_unicode(self):
+ key_bytes = _helpers.from_bytes(PKCS8_KEY_BYTES)
+ signer = crypt.Signer.from_string(key_bytes)
+ assert isinstance(signer, crypt.Signer)
+ assert isinstance(signer._key, rsa.key.PrivateKey)
+
+ def test_from_string_pkcs12(self):
+ with pytest.raises(ValueError):
+ crypt.Signer.from_string(PKCS12_KEY_BYTES)
+
+ def test_from_string_bogus_key(self):
+ key_bytes = 'bogus-key'
+ with pytest.raises(ValueError):
+ crypt.Signer.from_string(key_bytes)
diff --git a/tox.ini b/tox.ini
index d2a5f1f..5f2df1c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -25,7 +25,9 @@
deps =
{[testenv]deps}
sphinx
-commands = sphinx-apidoc --output-dir docs/reference --separate --module-first google
+commands =
+ rm -r docs/reference
+ sphinx-apidoc --output-dir docs/reference --separate --module-first google
[testenv:docs]
basepython = python3.5