1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
# Copyright 2017 Red Hat, 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 fixtures
import os
import subprocess
import tempfile
from zuul.lib import encryption
from tests.base import BaseTestCase
class TestEncryption(BaseTestCase):
def setUp(self):
super(TestEncryption, self).setUp()
self.private, self.public = encryption.generate_rsa_keypair()
# Because we set delete to False when using NamedTemporaryFile below
# we need to stick our usage of temporary files in the NestedTempfile
# fixture ensuring everything gets cleaned up when it is done.
self.useFixture(fixtures.NestedTempfile())
def test_serialization(self):
"Verify key serialization"
pem_private = encryption.serialize_rsa_private_key(self.private)
private2, public2 = encryption.deserialize_rsa_keypair(pem_private)
# cryptography public / private key objects don't implement
# equality testing, so we make sure they have the same numbers.
self.assertEqual(self.private.private_numbers(),
private2.private_numbers())
self.assertEqual(self.public.public_numbers(),
public2.public_numbers())
def test_pkcs1_oaep(self):
"Verify encryption and decryption"
orig_plaintext = b"some text to encrypt"
ciphertext = encryption.encrypt_pkcs1_oaep(orig_plaintext, self.public)
plaintext = encryption.decrypt_pkcs1_oaep(ciphertext, self.private)
self.assertEqual(orig_plaintext, plaintext)
def test_openssl_pkcs1_oaep(self):
"Verify that we can decrypt something encrypted with OpenSSL"
orig_plaintext = b"some text to encrypt"
pem_public = encryption.serialize_rsa_public_key(self.public)
public_file = tempfile.NamedTemporaryFile(delete=False)
try:
public_file.write(pem_public)
public_file.close()
p = subprocess.Popen(['openssl', 'rsautl', '-encrypt',
'-oaep', '-pubin', '-inkey',
public_file.name],
stdin=subprocess.PIPE,
stdout=subprocess.PIPE)
(stdout, stderr) = p.communicate(orig_plaintext)
ciphertext = stdout
finally:
os.unlink(public_file.name)
plaintext = encryption.decrypt_pkcs1_oaep(ciphertext, self.private)
self.assertEqual(orig_plaintext, plaintext)
|
