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# pygpgme - a Python wrapper for the gpgme library
# Copyright (C) 2006 James Henstridge
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import os
import unittest
try:
from io import BytesIO
except ImportError:
from StringIO import StringIO as BytesIO
from textwrap import dedent
import gpgme
from tests.util import GpgHomeTestCase
class EncryptDecryptTestCase(GpgHomeTestCase):
import_keys = ['key1.pub', 'key1.sec', 'key2.pub', 'key2.sec',
'signonly.pub', 'signonly.sec']
def test_decrypt(self):
ciphertext = BytesIO(dedent('''
-----BEGIN PGP MESSAGE-----
Version: GnuPG v1.4.1 (GNU/Linux)
hQIMA6lSIdANy91kARAAtXjViihD6DVBAYGdVs0a2sMPGRXjIR5Tw1ONKx4MtKn+
pydR+/+0rBRGaQXe/mMODA8gqADQjz7PcTMWBa7ja969+K2nw7j5DUIMatonQVMf
vpc7ze5hovZ1jXYAgmmXdUzDmk8ZkpHaEc5mMMAHYKFn+mm37AFY5JUjg2Ae9k3H
29t+pW+n9ncn/QBImW3oVslZ8Fza1xOIWZTUrmvtU0vELdlIxy+d945bvD9EhmTK
zRrD5m8V1etWINO2tE1Xhd4lV1KxncHzWafXLB5BKprztTqFUXNPAfnucYIczDon
5VvkOz3WAtl/93o85hUKhbgGK0dvU3m+bj620ZUE5oDpPB4l1CiO5RqUFYtyN4LF
OSAceVOh7X764VLtpAzuOpNfTYgvzIFJqrFOZHlf3XJRdGdpJuxMe8BwhdLyDscx
pap4QxajOUSUAeS45x6ERA7xHO0QOwXZNzoxiOt9KRaoIhEacu70A9xRcGNJfZE2
3z/AEMKr2CK6ny9/S8UQEhNvn1/gYfSXakFjWjM6PUXJSnz8WGjpFKKITpex3WBz
m/X8bKgG3fT92zqJdYocrl4wgz4Dt3+KirnGG4gITxaEYpTT0y6l6NAO60De0oRh
yqk+ulj2pvAlA82Ph0vTGZ9uOQGbrfN+NhwsG0HMNq+vmjShS1jJbSfoEt1AAIPS
RwGMq7SDk/V7nhKqZcxeIWdtRIgFvEf0KljthkOZxT/GozNjQclak7Kt69K2qyvt
XUfidNAhuOmeZ4pF31qSFiAnKRbzjzHp
=1s5N
-----END PGP MESSAGE-----
''').encode('ASCII'))
plaintext = BytesIO()
ctx = gpgme.Context()
ctx.decrypt(ciphertext, plaintext)
self.assertEqual(plaintext.getvalue(), b'hello world\n')
def test_decrypt_verify(self):
ciphertext = BytesIO(dedent('''
-----BEGIN PGP MESSAGE-----
Version: GnuPG v1.4.1 (GNU/Linux)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=fl3U
-----END PGP MESSAGE-----
''').encode('ASCII'))
plaintext = BytesIO()
ctx = gpgme.Context()
sigs = ctx.decrypt_verify(ciphertext, plaintext)
self.assertEqual(plaintext.getvalue(), b'hello world\n')
self.assertEqual(len(sigs), 1)
self.assertEqual(sigs[0].summary, 0)
self.assertEqual(sigs[0].fpr,
'E79A842DA34A1CA383F64A1546BB55F0885C65A4')
self.assertEqual(sigs[0].status, None)
self.assertEqual(sigs[0].notations, [])
self.assertEqual(sigs[0].timestamp, 1138049495)
self.assertEqual(sigs[0].exp_timestamp, 0)
self.assertEqual(sigs[0].wrong_key_usage, False)
self.assertEqual(sigs[0].validity, gpgme.VALIDITY_UNKNOWN)
self.assertEqual(sigs[0].validity_reason, None)
def test_encrypt(self):
plaintext = BytesIO(b'Hello World\n')
ciphertext = BytesIO()
ctx = gpgme.Context()
recipient = ctx.get_key('93C2240D6B8AA10AB28F701D2CF46B7FC97E6B0F')
ctx.encrypt([recipient], gpgme.ENCRYPT_ALWAYS_TRUST,
plaintext, ciphertext)
# rewind ciphertext buffer, and try to decrypt:
ciphertext.seek(0)
plaintext = BytesIO()
ctx.decrypt(ciphertext, plaintext)
self.assertEqual(plaintext.getvalue(), b'Hello World\n')
def test_encrypt_armor(self):
plaintext = BytesIO(b'Hello World\n')
ciphertext = BytesIO()
ctx = gpgme.Context()
ctx.armor = True
recipient = ctx.get_key('93C2240D6B8AA10AB28F701D2CF46B7FC97E6B0F')
ctx.encrypt([recipient], gpgme.ENCRYPT_ALWAYS_TRUST,
plaintext, ciphertext)
# rewind ciphertext buffer, and try to decrypt:
ciphertext.seek(0)
plaintext = BytesIO()
ctx.decrypt(ciphertext, plaintext)
self.assertEqual(plaintext.getvalue(), b'Hello World\n')
def test_encrypt_symmetric(self):
plaintext = BytesIO(b'Hello World\n')
ciphertext = BytesIO()
def passphrase(uid_hint, passphrase_info, prev_was_bad, fd):
os.write(fd, b'Symmetric passphrase\n')
ctx = gpgme.Context()
ctx.armor = True
ctx.passphrase_cb = passphrase
ctx.encrypt(None, 0, plaintext, ciphertext)
self.assertTrue(
ciphertext.getvalue().startswith(b'-----BEGIN PGP MESSAGE-----'))
# Rewind ciphertext buffer and try to decrypt it:
ciphertext.seek(0)
plaintext = BytesIO()
ctx.decrypt(ciphertext, plaintext)
self.assertEqual(plaintext.getvalue(), b'Hello World\n')
def test_encrypt_sign(self):
plaintext = BytesIO(b'Hello World\n')
ciphertext = BytesIO()
ctx = gpgme.Context()
ctx.armor = True
signer = ctx.get_key('E79A842DA34A1CA383F64A1546BB55F0885C65A4')
recipient = ctx.get_key('93C2240D6B8AA10AB28F701D2CF46B7FC97E6B0F')
ctx.signers = [signer]
new_sigs = ctx.encrypt_sign([recipient], gpgme.ENCRYPT_ALWAYS_TRUST,
plaintext, ciphertext)
self.assertEqual(len(new_sigs), 1)
self.assertEqual(new_sigs[0].type, gpgme.SIG_MODE_NORMAL)
self.assertEqual(new_sigs[0].fpr,
'E79A842DA34A1CA383F64A1546BB55F0885C65A4')
# rewind ciphertext buffer, and try to decrypt:
ciphertext.seek(0)
plaintext = BytesIO()
sigs = ctx.decrypt_verify(ciphertext, plaintext)
self.assertEqual(plaintext.getvalue(), b'Hello World\n')
self.assertEqual(len(sigs), 1)
self.assertEqual(sigs[0].summary, 0)
self.assertEqual(sigs[0].fpr,
'E79A842DA34A1CA383F64A1546BB55F0885C65A4')
self.assertEqual(sigs[0].status, None)
self.assertEqual(sigs[0].wrong_key_usage, False)
self.assertEqual(sigs[0].validity, gpgme.VALIDITY_UNKNOWN)
self.assertEqual(sigs[0].validity_reason, None)
def test_encrypt_to_signonly(self):
plaintext = BytesIO(b'Hello World\n')
ciphertext = BytesIO()
ctx = gpgme.Context()
recipient = ctx.get_key('15E7CE9BF1771A4ABC550B31F540A569CB935A42')
try:
ctx.encrypt([recipient], gpgme.ENCRYPT_ALWAYS_TRUST,
plaintext, ciphertext)
except gpgme.GpgmeError as exc:
self.assertEqual(exc.args[0], gpgme.ERR_SOURCE_UNKNOWN)
self.assertEqual(exc.args[1], gpgme.ERR_GENERAL)
else:
self.fail('gpgme.GpgmeError not raised')
def test_suite():
loader = unittest.TestLoader()
return loader.loadTestsFromName(__name__)
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