Merge leap.keymanager repo into history

1 files changed, 365 insertions, 0 deletions

diff --git a/keymanager/tests/test_openpgp.py b/keymanager/tests/test_openpgp.py
new file mode 100644
index 0000000..1f78ad4
--- /dev/null
+++ b/keymanager/tests/test_openpgp.py
@@ -0,0 +1,365 @@
+# -*- coding: utf-8 -*-
+# test_keymanager.py
+# Copyright (C) 2014 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+
+"""
+Tests for the OpenPGP support on Key Manager.
+"""
+
+
+from datetime import datetime
+from mock import Mock
+from twisted.internet.defer import inlineCallbacks, gatherResults, succeed
+
+from leap.keymanager import (
+    KeyNotFound,
+    openpgp,
+)
+from leap.keymanager.documents import (
+    TYPE_FINGERPRINT_PRIVATE_INDEX,
+    TYPE_ADDRESS_PRIVATE_INDEX,
+)
+from leap.keymanager.keys import OpenPGPKey
+
+from common import (
+    KeyManagerWithSoledadTestCase,
+    ADDRESS,
+    ADDRESS_2,
+    KEY_FINGERPRINT,
+    PUBLIC_KEY,
+    PUBLIC_KEY_2,
+    PRIVATE_KEY,
+    PRIVATE_KEY_2,
+)
+
+
+class OpenPGPCryptoTestCase(KeyManagerWithSoledadTestCase):
+
+    # set the trial timeout to 20min, needed by the key generation test
+    timeout = 1200
+
+    @inlineCallbacks
+    def _test_openpgp_gen_key(self):
+        pgp = openpgp.OpenPGPScheme(
+            self._soledad, gpgbinary=self.gpg_binary_path)
+        yield self._assert_key_not_found(pgp, 'user@leap.se')
+        key = yield pgp.gen_key('user@leap.se')
+        self.assertIsInstance(key, OpenPGPKey)
+        self.assertEqual(
+            'user@leap.se', key.address, 'Wrong address bound to key.')
+        self.assertEqual(
+            4096, key.length, 'Wrong key length.')
+
+    @inlineCallbacks
+    def test_openpgp_put_delete_key(self):
+        pgp = openpgp.OpenPGPScheme(
+            self._soledad, gpgbinary=self.gpg_binary_path)
+        yield self._assert_key_not_found(pgp, ADDRESS)
+        yield pgp.put_raw_key(PUBLIC_KEY, ADDRESS)
+        key = yield pgp.get_key(ADDRESS, private=False)
+        yield pgp.delete_key(key)
+        yield self._assert_key_not_found(pgp, ADDRESS)
+
+    @inlineCallbacks
+    def test_openpgp_put_ascii_key(self):
+        pgp = openpgp.OpenPGPScheme(
+            self._soledad, gpgbinary=self.gpg_binary_path)
+        yield self._assert_key_not_found(pgp, ADDRESS)
+        yield pgp.put_raw_key(PUBLIC_KEY, ADDRESS)
+        key = yield pgp.get_key(ADDRESS, private=False)
+        self.assertIsInstance(key, OpenPGPKey)
+        self.assertTrue(
+            ADDRESS in key.address, 'Wrong address bound to key.')
+        self.assertEqual(
+            4096, key.length, 'Wrong key length.')
+        yield pgp.delete_key(key)
+        yield self._assert_key_not_found(pgp, ADDRESS)
+
+    @inlineCallbacks
+    def test_get_public_key(self):
+        pgp = openpgp.OpenPGPScheme(
+            self._soledad, gpgbinary=self.gpg_binary_path)
+        yield self._assert_key_not_found(pgp, ADDRESS)
+        yield pgp.put_raw_key(PUBLIC_KEY, ADDRESS)
+        yield self._assert_key_not_found(pgp, ADDRESS, private=True)
+        key = yield pgp.get_key(ADDRESS, private=False)
+        self.assertTrue(ADDRESS in key.address)
+        self.assertFalse(key.private)
+        self.assertEqual(KEY_FINGERPRINT, key.fingerprint)
+        yield pgp.delete_key(key)
+        yield self._assert_key_not_found(pgp, ADDRESS)
+
+    @inlineCallbacks
+    def test_openpgp_encrypt_decrypt(self):
+        data = 'data'
+        pgp = openpgp.OpenPGPScheme(
+            self._soledad, gpgbinary=self.gpg_binary_path)
+
+        # encrypt
+        yield pgp.put_raw_key(PUBLIC_KEY, ADDRESS)
+        pubkey = yield pgp.get_key(ADDRESS, private=False)
+        cyphertext = yield pgp.encrypt(data, pubkey)
+
+        self.assertTrue(cyphertext is not None)
+        self.assertTrue(cyphertext != '')
+        self.assertTrue(cyphertext != data)
+        self.assertTrue(pgp.is_encrypted(cyphertext))
+        self.assertTrue(pgp.is_encrypted(cyphertext))
+
+        # decrypt
+        yield self._assert_key_not_found(pgp, ADDRESS, private=True)
+        yield pgp.put_raw_key(PRIVATE_KEY, ADDRESS)
+        privkey = yield pgp.get_key(ADDRESS, private=True)
+        decrypted, _ = yield pgp.decrypt(cyphertext, privkey)
+        self.assertEqual(decrypted, data)
+
+        yield pgp.delete_key(pubkey)
+        yield pgp.delete_key(privkey)
+        yield self._assert_key_not_found(pgp, ADDRESS, private=False)
+        yield self._assert_key_not_found(pgp, ADDRESS, private=True)
+
+    @inlineCallbacks
+    def test_verify_with_private_raises(self):
+        data = 'data'
+        pgp = openpgp.OpenPGPScheme(
+            self._soledad, gpgbinary=self.gpg_binary_path)
+        yield pgp.put_raw_key(PRIVATE_KEY, ADDRESS)
+        privkey = yield pgp.get_key(ADDRESS, private=True)
+        signed = pgp.sign(data, privkey)
+        self.assertRaises(
+            AssertionError,
+            pgp.verify, signed, privkey)
+
+    @inlineCallbacks
+    def test_sign_with_public_raises(self):
+        data = 'data'
+        pgp = openpgp.OpenPGPScheme(
+            self._soledad, gpgbinary=self.gpg_binary_path)
+        yield pgp.put_raw_key(PUBLIC_KEY, ADDRESS)
+        self.assertRaises(
+            AssertionError,
+            pgp.sign, data, ADDRESS, OpenPGPKey)
+
+    @inlineCallbacks
+    def test_verify_with_wrong_key_raises(self):
+        data = 'data'
+        pgp = openpgp.OpenPGPScheme(
+            self._soledad, gpgbinary=self.gpg_binary_path)
+        yield pgp.put_raw_key(PRIVATE_KEY, ADDRESS)
+        privkey = yield pgp.get_key(ADDRESS, private=True)
+        signed = pgp.sign(data, privkey)
+        yield pgp.put_raw_key(PUBLIC_KEY_2, ADDRESS_2)
+        wrongkey = yield pgp.get_key(ADDRESS_2)
+        self.assertFalse(pgp.verify(signed, wrongkey))
+
+    @inlineCallbacks
+    def test_encrypt_sign_with_public_raises(self):
+        data = 'data'
+        pgp = openpgp.OpenPGPScheme(
+            self._soledad, gpgbinary=self.gpg_binary_path)
+        yield pgp.put_raw_key(PRIVATE_KEY, ADDRESS)
+        privkey = yield pgp.get_key(ADDRESS, private=True)
+        pubkey = yield pgp.get_key(ADDRESS, private=False)
+        self.failureResultOf(
+            pgp.encrypt(data, privkey, sign=pubkey),
+            AssertionError)
+
+    @inlineCallbacks
+    def test_decrypt_verify_with_private_raises(self):
+        data = 'data'
+        pgp = openpgp.OpenPGPScheme(
+            self._soledad, gpgbinary=self.gpg_binary_path)
+        yield pgp.put_raw_key(PRIVATE_KEY, ADDRESS)
+        privkey = yield pgp.get_key(ADDRESS, private=True)
+        pubkey = yield pgp.get_key(ADDRESS, private=False)
+        encrypted_and_signed = yield pgp.encrypt(
+            data, pubkey, sign=privkey)
+        self.failureResultOf(
+            pgp.decrypt(encrypted_and_signed, privkey, verify=privkey),
+            AssertionError)
+
+    @inlineCallbacks
+    def test_decrypt_verify_with_wrong_key(self):
+        data = 'data'
+        pgp = openpgp.OpenPGPScheme(
+            self._soledad, gpgbinary=self.gpg_binary_path)
+        yield pgp.put_raw_key(PRIVATE_KEY, ADDRESS)
+        privkey = yield pgp.get_key(ADDRESS, private=True)
+        pubkey = yield pgp.get_key(ADDRESS, private=False)
+        encrypted_and_signed = yield pgp.encrypt(data, pubkey, sign=privkey)
+        yield pgp.put_raw_key(PUBLIC_KEY_2, ADDRESS_2)
+        wrongkey = yield pgp.get_key(ADDRESS_2)
+        decrypted, validsign = yield pgp.decrypt(encrypted_and_signed,
+                                                 privkey,
+                                                 verify=wrongkey)
+        self.assertEqual(decrypted, data)
+        self.assertFalse(validsign)
+
+    @inlineCallbacks
+    def test_sign_verify(self):
+        data = 'data'
+        pgp = openpgp.OpenPGPScheme(
+            self._soledad, gpgbinary=self.gpg_binary_path)
+        yield pgp.put_raw_key(PRIVATE_KEY, ADDRESS)
+        privkey = yield pgp.get_key(ADDRESS, private=True)
+        signed = pgp.sign(data, privkey, detach=False)
+        pubkey = yield pgp.get_key(ADDRESS, private=False)
+        validsign = pgp.verify(signed, pubkey)
+        self.assertTrue(validsign)
+
+    @inlineCallbacks
+    def test_encrypt_sign_decrypt_verify(self):
+        pgp = openpgp.OpenPGPScheme(
+            self._soledad, gpgbinary=self.gpg_binary_path)
+
+        yield pgp.put_raw_key(PRIVATE_KEY, ADDRESS)
+        pubkey = yield pgp.get_key(ADDRESS, private=False)
+        privkey = yield pgp.get_key(ADDRESS, private=True)
+
+        yield pgp.put_raw_key(PRIVATE_KEY_2, ADDRESS_2)
+        pubkey2 = yield pgp.get_key(ADDRESS_2, private=False)
+        privkey2 = yield pgp.get_key(ADDRESS_2, private=True)
+
+        data = 'data'
+        encrypted_and_signed = yield pgp.encrypt(
+            data, pubkey2, sign=privkey)
+        res, validsign = yield pgp.decrypt(
+            encrypted_and_signed, privkey2, verify=pubkey)
+        self.assertEqual(data, res)
+        self.assertTrue(validsign)
+
+    @inlineCallbacks
+    def test_sign_verify_detached_sig(self):
+        data = 'data'
+        pgp = openpgp.OpenPGPScheme(
+            self._soledad, gpgbinary=self.gpg_binary_path)
+        yield pgp.put_raw_key(PRIVATE_KEY, ADDRESS)
+        privkey = yield pgp.get_key(ADDRESS, private=True)
+        signature = yield pgp.sign(data, privkey, detach=True)
+        pubkey = yield pgp.get_key(ADDRESS, private=False)
+        validsign = pgp.verify(data, pubkey, detached_sig=signature)
+        self.assertTrue(validsign)
+
+    @inlineCallbacks
+    def test_self_repair_three_keys(self):
+        refreshed_keep = datetime(2007, 1, 1)
+        self._insert_key_docs([datetime(2005, 1, 1),
+                               refreshed_keep,
+                               datetime(2001, 1, 1)])
+        delete_doc = self._mock_delete_doc()
+
+        pgp = openpgp.OpenPGPScheme(
+            self._soledad, gpgbinary=self.gpg_binary_path)
+        key = yield pgp.get_key(ADDRESS, private=False)
+        self.assertEqual(key.refreshed_at, refreshed_keep)
+        self.assertEqual(self.count, 2)
+        self._soledad.delete_doc = delete_doc
+
+    @inlineCallbacks
+    def test_self_repair_no_keys(self):
+        pgp = openpgp.OpenPGPScheme(
+            self._soledad, gpgbinary=self.gpg_binary_path)
+        yield pgp.put_raw_key(PUBLIC_KEY, ADDRESS)
+
+        get_from_index = self._soledad.get_from_index
+        delete_doc = self._soledad.delete_doc
+
+        def my_get_from_index(*args):
+            if (args[0] == TYPE_FINGERPRINT_PRIVATE_INDEX and
+                    args[2] == KEY_FINGERPRINT):
+                return succeed([])
+            return get_from_index(*args)
+
+        self._soledad.get_from_index = my_get_from_index
+        self._soledad.delete_doc = Mock(return_value=succeed(None))
+
+        try:
+            yield self.assertFailure(pgp.get_key(ADDRESS, private=False),
+                                     KeyNotFound)
+            # it should have deleted the index
+            self.assertEqual(self._soledad.delete_doc.call_count, 1)
+        finally:
+            self._soledad.get_from_index = get_from_index
+            self._soledad.delete_doc = delete_doc
+
+    @inlineCallbacks
+    def test_self_repair_put_keys(self):
+        self._insert_key_docs([datetime(2005, 1, 1),
+                               datetime(2007, 1, 1),
+                               datetime(2001, 1, 1)])
+        delete_doc = self._mock_delete_doc()
+
+        pgp = openpgp.OpenPGPScheme(
+            self._soledad, gpgbinary=self.gpg_binary_path)
+        yield pgp.put_raw_key(PUBLIC_KEY, ADDRESS)
+        self._soledad.delete_doc = delete_doc
+        self.assertEqual(self.count, 2)
+
+    @inlineCallbacks
+    def test_self_repair_six_active_docs(self):
+        pgp = openpgp.OpenPGPScheme(
+            self._soledad, gpgbinary=self.gpg_binary_path)
+
+        k1 = OpenPGPKey(ADDRESS, fingerprint="1",
+                        refreshed_at=datetime(2005, 1, 1))
+        k2 = OpenPGPKey(ADDRESS, fingerprint="2",
+                        refreshed_at=datetime(2007, 1, 1))
+        k3 = OpenPGPKey(ADDRESS, fingerprint="3",
+                        refreshed_at=datetime(2007, 1, 1),
+                        encr_used=True, sign_used=True)
+        k4 = OpenPGPKey(ADDRESS, fingerprint="4",
+                        refreshed_at=datetime(2007, 1, 1),
+                        sign_used=True)
+        k5 = OpenPGPKey(ADDRESS, fingerprint="5",
+                        refreshed_at=datetime(2007, 1, 1),
+                        encr_used=True)
+        k6 = OpenPGPKey(ADDRESS, fingerprint="6",
+                        refreshed_at=datetime(2006, 1, 1),
+                        encr_used=True, sign_used=True)
+        keys = (k1, k2, k3, k4, k5, k6)
+        for key in keys:
+            yield self._soledad.create_doc_from_json(key.get_json())
+            yield self._soledad.create_doc_from_json(key.get_active_json())
+
+        delete_doc = self._mock_delete_doc()
+
+        key = yield pgp.get_key(ADDRESS, private=False)
+        self._soledad.delete_doc = delete_doc
+        self.assertEqual(self.count, 5)
+        self.assertEqual(key.fingerprint, "3")
+
+    def _assert_key_not_found(self, pgp, address, private=False):
+        d = pgp.get_key(address, private=private)
+        return self.assertFailure(d, KeyNotFound)
+
+    @inlineCallbacks
+    def _insert_key_docs(self, refreshed_at):
+        for date in refreshed_at:
+            key = OpenPGPKey(ADDRESS, fingerprint=KEY_FINGERPRINT,
+                             refreshed_at=date)
+            yield self._soledad.create_doc_from_json(key.get_json())
+        yield self._soledad.create_doc_from_json(key.get_active_json())
+
+    def _mock_delete_doc(self):
+        delete_doc = self._soledad.delete_doc
+        self.count = 0
+
+        def my_delete_doc(*args):
+            self.count += 1
+            return delete_doc(*args)
+        self._soledad.delete_doc = my_delete_doc
+        return delete_doc