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-rw-r--r--src/leap/keymanager/__init__.py96
-rw-r--r--src/leap/keymanager/errors.py6
-rw-r--r--src/leap/keymanager/keys.py16
-rw-r--r--src/leap/keymanager/openpgp.py3
-rw-r--r--src/leap/keymanager/tests/__init__.py236
-rw-r--r--src/leap/keymanager/tests/test_keymanager.py234
-rw-r--r--src/leap/keymanager/tests/test_validation.py150
-rw-r--r--src/leap/keymanager/validation.py94
8 files changed, 594 insertions, 241 deletions
diff --git a/src/leap/keymanager/__init__.py b/src/leap/keymanager/__init__.py
index c3423d9..156aaf8 100644
--- a/src/leap/keymanager/__init__.py
+++ b/src/leap/keymanager/__init__.py
@@ -48,7 +48,12 @@ from leap.common.events import signal
from leap.common.events import events_pb2 as proto
from leap.common.decorators import memoized_method
-from leap.keymanager.errors import KeyNotFound, KeyAttributesDiffer
+from leap.keymanager.errors import (
+ KeyNotFound,
+ KeyAddressMismatch,
+ KeyNotValidUpgrade
+)
+from leap.keymanager.validation import ValidationLevel, can_upgrade
from leap.keymanager.keys import (
EncryptionKey,
@@ -208,8 +213,11 @@ class KeyManager(object):
server_keys = res.json()
# insert keys in local database
if self.OPENPGP_KEY in server_keys:
- self._wrapper_map[OpenPGPKey].put_ascii_key(
- server_keys['openpgp'])
+ self.put_raw_key(
+ server_keys['openpgp'],
+ OpenPGPKey,
+ address=address,
+ validation=ValidationLevel.Provider_Trust)
except requests.exceptions.HTTPError as e:
if e.response.status_code == 404:
raise KeyNotFound(address)
@@ -230,7 +238,7 @@ class KeyManager(object):
replace any prior keys for the same address in its database.
:param ktype: The type of the key.
- :type ktype: KeyType
+ :type ktype: subclass of EncryptionKey
:raise KeyNotFound: If the key was not found in local database.
"""
@@ -260,7 +268,7 @@ class KeyManager(object):
:param address: The address bound to the key.
:type address: str
:param ktype: The type of the key.
- :type ktype: KeyType
+ :type ktype: subclass of EncryptionKey
:param private: Look for a private key instead of a public one?
:type private: bool
:param fetch_remote: If key not found in local storage try to fetch
@@ -323,7 +331,7 @@ class KeyManager(object):
Generate a key of type C{ktype} bound to the user's address.
:param ktype: The type of the key.
- :type ktype: KeyType
+ :type ktype: subclass of EncryptionKey
:return: The generated key.
:rtype: EncryptionKey
@@ -515,32 +523,74 @@ class KeyManager(object):
"""
Put C{key} in local storage.
- :param key: The key to be stored. It can be ascii key or an OpenPGPKey
- :type key: str or OpenPGPKey
+ :param key: The key to be stored
+ :type key: EncryptionKey
+ :raises KeyNotValidUpdate: if a key with the same uid exists and the
+ new one is not a valid update for it
"""
try:
- if isinstance(key, basestring):
- self._wrapper_map[OpenPGPKey].put_ascii_key(key)
- else:
+ old_key = self._wrapper_map[type(key)].get_key(key.address,
+ private=key.private)
+ except KeyNotFound:
+ old_key = None
+
+ if key.private or can_upgrade(key, old_key):
+ try:
self._wrapper_map[type(key)].put_key(key)
- except IndexError as e:
- leap_assert(False, "Unsupported key type. Error {0!r}".format(e))
+ except IndexError as e:
+ leap_assert(
+ False, "Unsupported key type. Error {0!r}".format(e))
+ else:
+ raise KeyNotValidUpgrade("Key %s can not be upgraded by new key %s"
+ % (old_key.key_id, key.key_id))
- def fetch_key(self, address, uri, ktype):
+ def put_raw_key(self, key, ktype, address=None,
+ validation=ValidationLevel.Weak_Chain):
+ """
+ Put C{key} in local storage.
+
+ :param key: The ascii key to be stored
+ :type key: str
+ :param ktype: the type of the key.
+ :type ktype: subclass of EncryptionKey
+ :param address: if set used to check that the key is for this address
+ :type address: str
+ :param validation: validation level for this key
+ (default: 'Weak_Chain')
+ :type validation: ValidationLevel
+
+ :raises KeyAddressMismatch: if address doesn't match any uid on the key
+ :raises KeyNotValidUpdate: if a key with the same uid exists and the
+ new one is not a valid update for it
+ """
+ pubkey, _ = self._wrapper_map[ktype].parse_ascii_key(key)
+ if address is not None and address != pubkey.address:
+ raise KeyAddressMismatch("Key UID %s, but expected %s"
+ % (pubkey.address, address))
+
+ pubkey.validation = validation
+ self.put_key(pubkey)
+
+ def fetch_key(self, address, uri, ktype,
+ validation=ValidationLevel.Weak_Chain):
"""
Fetch a public key for C{address} from the network and put it in
local storage.
- Raises C{openpgp.errors.KeyNotFound} if not valid key on C{uri}.
- Raises C{openpgp.errors.KeyAttributesDiffer} if address don't match
- any uid on the key.
-
:param address: The email address of the key.
:type address: str
:param uri: The URI of the key.
:type uri: str
- :param ktype: The type of the key.
- :type ktype: KeyType
+ :param ktype: the type of the key.
+ :type ktype: subclass of EncryptionKey
+ :param validation: validation level for this key
+ (default: 'Weak_Chain')
+ :type validation: ValidationLevel
+
+ :raises KeyNotFound: if not valid key on C{uri}
+ :raises KeyAddressMismatch: if address doesn't match any uid on the key
+ :raises KeyNotValidUpdate: if a key with the same uid exists and the
+ new one is not a valid update for it
"""
res = self._get(uri)
if not res.ok:
@@ -551,8 +601,10 @@ class KeyManager(object):
if pubkey is None:
raise KeyNotFound(uri)
if pubkey.address != address:
- raise KeyAttributesDiffer("UID %s found, but expected %s"
- % (pubkey.address, address))
+ raise KeyAddressMismatch("UID %s found, but expected %s"
+ % (pubkey.address, address))
+
+ pubkey.validation = validation
self.put_key(pubkey)
from ._version import get_versions
diff --git a/src/leap/keymanager/errors.py b/src/leap/keymanager/errors.py
index ebe4fd5..f896582 100644
--- a/src/leap/keymanager/errors.py
+++ b/src/leap/keymanager/errors.py
@@ -96,3 +96,9 @@ class KeyFingerprintMismatch(Exception):
"""
A mismatch between fingerprints.
"""
+
+
+class KeyNotValidUpgrade(Exception):
+ """
+ Already existing key can not be upgraded with the new key
+ """
diff --git a/src/leap/keymanager/keys.py b/src/leap/keymanager/keys.py
index ec1bfeb..ecb0a36 100644
--- a/src/leap/keymanager/keys.py
+++ b/src/leap/keymanager/keys.py
@@ -25,12 +25,17 @@ try:
import simplejson as json
except ImportError:
import json # noqa
+import logging
import re
from abc import ABCMeta, abstractmethod
from leap.common.check import leap_assert
+from leap.keymanager.validation import ValidationLevel, toValidationLevel
+
+logger = logging.getLogger(__name__)
+
#
# Dictionary keys used for storing cryptographic keys.
@@ -106,6 +111,13 @@ def build_key_from_dict(kClass, address, kdict):
leap_assert(
address == kdict[KEY_ADDRESS_KEY],
'Wrong address in key data.')
+ try:
+ validation = toValidationLevel(kdict[KEY_VALIDATION_KEY])
+ except ValueError:
+ logger.error("Not valid validation level (%s) for key %s",
+ (kdict[KEY_VALIDATION_KEY], kdict[KEY_ID_KEY]))
+ validation = ValidationLevel.Weak_Chain
+
return kClass(
address,
key_id=kdict[KEY_ID_KEY],
@@ -116,7 +128,7 @@ def build_key_from_dict(kClass, address, kdict):
expiry_date=kdict[KEY_EXPIRY_DATE_KEY],
first_seen_at=kdict[KEY_FIRST_SEEN_AT_KEY],
last_audited_at=kdict[KEY_LAST_AUDITED_AT_KEY],
- validation=kdict[KEY_VALIDATION_KEY], # TODO: verify for validation.
+ validation=validation,
)
@@ -173,7 +185,7 @@ class EncryptionKey(object):
KEY_PRIVATE_KEY: self.private,
KEY_LENGTH_KEY: self.length,
KEY_EXPIRY_DATE_KEY: self.expiry_date,
- KEY_VALIDATION_KEY: self.validation,
+ KEY_VALIDATION_KEY: str(self.validation),
KEY_FIRST_SEEN_AT_KEY: self.first_seen_at,
KEY_LAST_AUDITED_AT_KEY: self.last_audited_at,
KEY_TAGS_KEY: [KEYMANAGER_KEY_TAG],
diff --git a/src/leap/keymanager/openpgp.py b/src/leap/keymanager/openpgp.py
index 6a825cd..57a7754 100644
--- a/src/leap/keymanager/openpgp.py
+++ b/src/leap/keymanager/openpgp.py
@@ -38,6 +38,7 @@ from leap.keymanager.keys import (
KEYMANAGER_KEY_TAG,
TAGS_ADDRESS_PRIVATE_INDEX,
)
+from leap.keymanager.validation import ValidationLevel
logger = logging.getLogger(__name__)
@@ -183,7 +184,7 @@ def _build_key_from_gpg(address, key, key_data):
private=True if key['type'] == 'sec' else False,
length=key['length'],
expiry_date=key['expires'],
- validation=None, # TODO: verify for validation.
+ validation=ValidationLevel.Weak_Chain,
)
diff --git a/src/leap/keymanager/tests/__init__.py b/src/leap/keymanager/tests/__init__.py
index e69de29..1ea33b5 100644
--- a/src/leap/keymanager/tests/__init__.py
+++ b/src/leap/keymanager/tests/__init__.py
@@ -0,0 +1,236 @@
+# -*- coding: utf-8 -*-
+# test_keymanager.py
+# Copyright (C) 2013 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/>.
+"""
+Base classes for the Key Manager tests.
+"""
+
+from mock import Mock
+
+from leap.common.testing.basetest import BaseLeapTest
+from leap.soledad.client import Soledad
+from leap.keymanager import KeyManager
+
+
+ADDRESS = 'leap@leap.se'
+# XXX discover the gpg binary path
+GPG_BINARY_PATH = '/usr/bin/gpg'
+
+
+class KeyManagerWithSoledadTestCase(BaseLeapTest):
+
+ def setUp(self):
+ # mock key fetching and storing so Soledad doesn't fail when trying to
+ # reach the server.
+ Soledad._get_secrets_from_shared_db = Mock(return_value=None)
+ Soledad._put_secrets_in_shared_db = Mock(return_value=None)
+
+ class MockSharedDB(object):
+
+ get_doc = Mock(return_value=None)
+ put_doc = Mock()
+ lock = Mock(return_value=('atoken', 300))
+ unlock = Mock(return_value=True)
+
+ def __call__(self):
+ return self
+
+ Soledad._shared_db = MockSharedDB()
+
+ self._soledad = Soledad(
+ u"leap@leap.se",
+ u"123456",
+ secrets_path=self.tempdir + "/secret.gpg",
+ local_db_path=self.tempdir + "/soledad.u1db",
+ server_url='',
+ cert_file=None,
+ auth_token=None,
+ )
+
+ def tearDown(self):
+ km = self._key_manager()
+ for key in km.get_all_keys():
+ km._wrapper_map[key.__class__].delete_key(key)
+ for key in km.get_all_keys(private=True):
+ km._wrapper_map[key.__class__].delete_key(key)
+
+ def _key_manager(self, user=ADDRESS, url='', token=None):
+ return KeyManager(user, url, self._soledad, token=token,
+ gpgbinary=GPG_BINARY_PATH)
+
+
+# key 24D18DDF: public key "Leap Test Key <leap@leap.se>"
+KEY_FINGERPRINT = "E36E738D69173C13D709E44F2F455E2824D18DDF"
+PUBLIC_KEY = """
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+Version: GnuPG v1.4.10 (GNU/Linux)
+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+ZtQ/VymwFL3XdUWV6B/hU4PVAFvO3qlOtdJ6TpE+nEWgcWjCv5g7RjXX
+=MuOY
+-----END PGP PUBLIC KEY BLOCK-----
+"""
+PRIVATE_KEY = """
+-----BEGIN PGP PRIVATE KEY BLOCK-----
+Version: GnuPG v1.4.10 (GNU/Linux)
+
+lQcYBFC9+dkBEADNRfwV23TWEoGc/x0wWH1P7PlXt8MnC2Z1kKaKKmfnglVrpOiz
+iLWoiU58sfZ0L5vHkzXHXCBf6Eiy/EtUIvdiWAn+yASJ1mk5jZTBKO/WMAHD8wTO
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+RZXoH+FTg9UAW87eqU610npOkT6cRaBxaMK/mDtGNdc=
+=JTFu
+-----END PGP PRIVATE KEY BLOCK-----
+"""
diff --git a/src/leap/keymanager/tests/test_keymanager.py b/src/leap/keymanager/tests/test_keymanager.py
index 65f8f39..1bd6a2e 100644
--- a/src/leap/keymanager/tests/test_keymanager.py
+++ b/src/leap/keymanager/tests/test_keymanager.py
@@ -1,4 +1,4 @@
-## -*- coding: utf-8 -*-
+# -*- coding: utf-8 -*-
# test_keymanager.py
# Copyright (C) 2013 LEAP
#
@@ -23,12 +23,10 @@ Tests for the Key Manager.
from mock import Mock
from leap.common.testing.basetest import BaseLeapTest
-from leap.soledad.client import Soledad
from leap.keymanager import (
- KeyManager,
openpgp,
KeyNotFound,
- KeyAttributesDiffer,
+ KeyAddressMismatch,
errors,
)
from leap.keymanager.openpgp import OpenPGPKey
@@ -36,11 +34,21 @@ from leap.keymanager.keys import (
is_address,
build_key_from_dict,
)
+from leap.keymanager.validation import (
+ ValidationLevel,
+ toValidationLevel
+)
+from leap.keymanager.tests import (
+ KeyManagerWithSoledadTestCase,
+ ADDRESS,
+ KEY_FINGERPRINT,
+ PUBLIC_KEY,
+ PRIVATE_KEY,
+ GPG_BINARY_PATH
+)
-ADDRESS = 'leap@leap.se'
ADDRESS_2 = 'anotheruser@leap.se'
-GPG_BINARY_PATH = '/usr/bin/gpg'
class KeyManagerUtilTestCase(BaseLeapTest):
@@ -76,7 +84,7 @@ class KeyManagerUtilTestCase(BaseLeapTest):
'expiry_date': 'expiry_date',
'first_seen_at': 'first_seen_at',
'last_audited_at': 'last_audited_at',
- 'validation': 'validation',
+ 'validation': str(ValidationLevel.Weak_Chain),
}
key = build_key_from_dict(OpenPGPKey, ADDRESS, kdict)
self.assertEqual(
@@ -107,52 +115,10 @@ class KeyManagerUtilTestCase(BaseLeapTest):
kdict['last_audited_at'], key.last_audited_at,
'Wrong data in key.')
self.assertEqual(
- kdict['validation'], key.validation,
+ toValidationLevel(kdict['validation']), key.validation,
'Wrong data in key.')
-class KeyManagerWithSoledadTestCase(BaseLeapTest):
-
- def setUp(self):
- # mock key fetching and storing so Soledad doesn't fail when trying to
- # reach the server.
- Soledad._get_secrets_from_shared_db = Mock(return_value=None)
- Soledad._put_secrets_in_shared_db = Mock(return_value=None)
-
- class MockSharedDB(object):
-
- get_doc = Mock(return_value=None)
- put_doc = Mock()
- lock = Mock(return_value=('atoken', 300))
- unlock = Mock(return_value=True)
-
- def __call__(self):
- return self
-
- Soledad._shared_db = MockSharedDB()
-
- self._soledad = Soledad(
- u"leap@leap.se",
- u"123456",
- secrets_path=self.tempdir + "/secret.gpg",
- local_db_path=self.tempdir + "/soledad.u1db",
- server_url='',
- cert_file=None,
- auth_token=None,
- )
-
- def tearDown(self):
- km = self._key_manager()
- for key in km.get_all_keys():
- km._wrapper_map[key.__class__].delete_key(key)
- for key in km.get_all_keys(private=True):
- km._wrapper_map[key.__class__].delete_key(key)
-
- def _key_manager(self, user=ADDRESS, url='', token=None):
- return KeyManager(user, url, self._soledad, token=token,
- gpgbinary=GPG_BINARY_PATH)
-
-
class OpenPGPCryptoTestCase(KeyManagerWithSoledadTestCase):
def _test_openpgp_gen_key(self):
@@ -220,7 +186,6 @@ class OpenPGPCryptoTestCase(KeyManagerWithSoledadTestCase):
KeyNotFound, pgp.get_key, ADDRESS, private=True)
pgp.put_ascii_key(PRIVATE_KEY)
privkey = pgp.get_key(ADDRESS, private=True)
- plaintext = pgp.decrypt(cyphertext, privkey)
pgp.delete_key(pubkey)
pgp.delete_key(privkey)
self.assertRaises(
@@ -473,7 +438,7 @@ class KeyManagerKeyManagementTestCase(KeyManagerWithSoledadTestCase):
"""
km = self._key_manager(url='http://nickserver.domain')
- km.put_key(PUBLIC_KEY)
+ km.put_raw_key(PUBLIC_KEY, OpenPGPKey)
key = km.get_key(ADDRESS, OpenPGPKey)
self.assertIsInstance(key, OpenPGPKey)
self.assertEqual(ADDRESS, key.address)
@@ -524,7 +489,7 @@ class KeyManagerKeyManagementTestCase(KeyManagerWithSoledadTestCase):
km._fetcher.get = Mock(return_value=Response())
km.ca_cert_path = 'cacertpath'
- self.assertRaises(KeyAttributesDiffer, km.fetch_key,
+ self.assertRaises(KeyAddressMismatch, km.fetch_key,
ADDRESS_2, "http://site.domain/key", OpenPGPKey)
@@ -568,169 +533,6 @@ class KeyManagerCryptoTestCase(KeyManagerWithSoledadTestCase):
# Key material for testing
-# key 24D18DDF: public key "Leap Test Key <leap@leap.se>"
-KEY_FINGERPRINT = "E36E738D69173C13D709E44F2F455E2824D18DDF"
-PUBLIC_KEY = """
------BEGIN PGP PUBLIC KEY BLOCK-----
-Version: GnuPG v1.4.10 (GNU/Linux)
-
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-ZtQ/VymwFL3XdUWV6B/hU4PVAFvO3qlOtdJ6TpE+nEWgcWjCv5g7RjXX
-=MuOY
------END PGP PUBLIC KEY BLOCK-----
-"""
-PRIVATE_KEY = """
------BEGIN PGP PRIVATE KEY BLOCK-----
-Version: GnuPG v1.4.10 (GNU/Linux)
-
-lQcYBFC9+dkBEADNRfwV23TWEoGc/x0wWH1P7PlXt8MnC2Z1kKaKKmfnglVrpOiz
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-d/INMwXnR9U81O8+7LT6yw/ca4ppcFoJD7/XJbkRiML6+bJ4Dakiy6i727BzV17g
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-RZXoH+FTg9UAW87eqU610npOkT6cRaBxaMK/mDtGNdc=
-=JTFu
------END PGP PRIVATE KEY BLOCK-----
-"""
-
# key 7FEE575A: public key "anotheruser <anotheruser@leap.se>"
PUBLIC_KEY_2 = """
-----BEGIN PGP PUBLIC KEY BLOCK-----
diff --git a/src/leap/keymanager/tests/test_validation.py b/src/leap/keymanager/tests/test_validation.py
new file mode 100644
index 0000000..c7170ab
--- /dev/null
+++ b/src/leap/keymanager/tests/test_validation.py
@@ -0,0 +1,150 @@
+# -*- coding: utf-8 -*-
+# __init__.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 Validation Levels
+"""
+
+from leap.keymanager.openpgp import OpenPGPKey
+from leap.keymanager.errors import (
+ KeyNotValidUpgrade
+)
+from leap.keymanager.tests import (
+ KeyManagerWithSoledadTestCase,
+ ADDRESS,
+ PUBLIC_KEY,
+ KEY_FINGERPRINT
+)
+from leap.keymanager.validation import ValidationLevel
+
+
+class ValidationLevelTestCase(KeyManagerWithSoledadTestCase):
+
+ def test_none_old_key(self):
+ km = self._key_manager()
+ km.put_raw_key(PUBLIC_KEY, OpenPGPKey)
+ key = km.get_key(ADDRESS, OpenPGPKey, fetch_remote=False)
+ self.assertEqual(key.fingerprint, KEY_FINGERPRINT)
+
+ def test_cant_upgrade(self):
+ km = self._key_manager()
+ km.put_raw_key(PUBLIC_KEY, OpenPGPKey,
+ validation=ValidationLevel.Provider_Trust)
+ self.assertRaises(KeyNotValidUpgrade, km.put_raw_key, UNRELATED_KEY,
+ OpenPGPKey)
+
+ def test_fingerprint_level(self):
+ km = self._key_manager()
+ km.put_raw_key(PUBLIC_KEY, OpenPGPKey)
+ km.put_raw_key(UNRELATED_KEY, OpenPGPKey,
+ validation=ValidationLevel.Fingerprint)
+ key = km.get_key(ADDRESS, OpenPGPKey, fetch_remote=False)
+ self.assertEqual(key.fingerprint, UNRELATED_FINGERPRINT)
+
+ def test_expired_key(self):
+ km = self._key_manager()
+ km.put_raw_key(EXPIRED_KEY, OpenPGPKey)
+ km.put_raw_key(UNRELATED_KEY, OpenPGPKey)
+ key = km.get_key(ADDRESS, OpenPGPKey, fetch_remote=False)
+ self.assertEqual(key.fingerprint, UNRELATED_FINGERPRINT)
+
+ def test_expired_fail_lower_level(self):
+ km = self._key_manager()
+ km.put_raw_key(EXPIRED_KEY, OpenPGPKey,
+ validation=ValidationLevel.Third_Party_Endorsement)
+ self.assertRaises(
+ KeyNotValidUpgrade,
+ km.put_raw_key,
+ UNRELATED_KEY,
+ OpenPGPKey,
+ validation=ValidationLevel.Provider_Trust)
+
+
+# Key material for testing
+
+# key 901FBCA5: public key "Leap Test Key <leap@leap.se>"
+UNRELATED_FINGERPRINT = "ABCCD9C8270B6A8D5633FAC9D04DB2E4901FBCA5"
+UNRELATED_KEY = """
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+Version: GnuPG v1
+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+t49qweyJi00V3vCKCdWwPJnPM5eJOIrZHCbwIgeXCsXxVNJVyziVqMuum+px1h2d
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+h2kAHC5sf1rixVOY6rLhw75gQHE/L2BZJRfVsDQqIpEMh2OgMfNbL928jncjwQvc
+/IXXwSUx7y50ll+uNh+TVLf0MlUjKdHmHqnGBMlIIWojWJuKxYmOOoO5AQ0EVD1U
+OgEIAM/TlhWVSI+tl5XBUAcf60RxjpHQkmdfq1i1jgwUgu/638EKzBfLcnRYX8Rn
+DO9CWnHcql/4hp226fIWZN/SyReE81n7UkLDMAglhHgiezHMSH1GYVu4IlfpLVXn
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+vYRfZo1K2brtHx4bToY6mALRF4ruV5SVZGS69e4Sh692C2pXSVbCpRhQ/2WnvkZH
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+TbLkkB+8pR+fB/0SeTcRr1duN7VYWdtng1+jO0ornIBtUraglN01dEEmiwN83DTi
+J37i+nll+4is7BtiXqhumRptKh1v8UUMyFX/rjjoojCJBg5NExsiOYl3O4le68oF
+3+XC+n7yrlyNmI15+3dcQmC9F6HN8EBZgrn5YPKGIOMHTGatB5PryMKg2IKiN5GZ
+E0hmrOQgmcGrkeqysKACQYUHTasSk2IY1l1G5YQglqCaBh4+UC82Dmg5fTBbHjxP
+YhhojkP4aD/0YW7dgql3nzYqvPCAjBH1Cf6rA9HvAJwUP9Ig/okcrrPEKm638+mG
++vNIuLqIkA4oFLBAAIrgMiQZ+NZz9uD6DJE7
+=FO7G
+-----END PGP PUBLIC KEY BLOCK-----
+"""
+
+# key A1885A7C: public key "Leap Test Key <leap@leap.se>"
+EXPIRED_FINGERPRINT = "7C1F68B0E14157B09B5F4ADE6F15F004A1885A7C"
+EXPIRED_KEY = """
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+Version: GnuPG v1.4.12 (GNU/Linux)
+
+mQENBBvrfd0BCADGNpspaNhsbhSjKioCWrE2MTTYC+Sdpes22RabdhQyOCWvlSbj
+b8p0y3kmnMOtVBT+c22/w7eu2YBfIpS4RswgE5ypr/1kZLFQueVe/cp29GjPvLwJ
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+IhnpACE52NvGdG9eB3x7xyQFsQqK8F0XvEev2UJH4SR7vb+Z7FNTJKCy6likYbSV
+wGGFuowFSESnzXuUI6PcjyuO6FUbMgeM5euFABEBAAG0HExlYXAgVGVzdCBLZXkg
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+AgkKCwQWAgMBAh4BAheAAAoJEG8V8AShiFp8VNkH/iCQcXkTfMOVlL2rQRyZtJEO
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+SZ+P0xr4FetcOVPM3wAzUtDG7hKsgccoIXt0FWhG/nn8cETfGH+o3W/ky7Jktatx
+DGDHoZJvAaG2B2ey1pAQlezr8p/O+ZVABiigHk1S+myBHyhlXzUcjhQnEG7aHZ65
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+4thYPuJ1kPH8/bkbTi9sLHoApYgL+7ssje8w4epr0qD4IGxeKwJPf/tbTRpnd8w3
+leldixHHKAutNt49p0pkXlORAHRpUmp+KMZhFvCvIPwe9o5mYtMR7sDRxjY61ZEQ
+KLyKoh5wsJsaPXBjdG7cf6G/cBcwvnQVUHcAEQEAAYkBJQQYAQIADwUCG+t93QIb
+DAUJAAFRgAAKCRBvFfAEoYhafOPgB/9z4YCyT/N0262HtegHykhsyykuqEeNb1LV
+D9INcP+RbCX/0IjFgP4DTMPP7qqF1OBwR276maALT321Gqxc5HN5YrwxGdmoyBLm
+unaQJJlD+7B1C+jnO6r4m44obvJ/NMERxVyzkXap3J2VgRIO1wNLI9I0sH6Kj5/j
+Mgy06OwXDcqIc+jB4sIJ3Tnm8LZ3phJzNEm9mI8Ak0oJ7IEcMndR6DzmRt1rJQcq
+K/D7hOG02zvyRhxF27U1qR1MxeU/gNnOx8q4dnVyWB+EiV1sFl4iTOyYHEsoyd7W
+Osuse7+NkyUHgMXMVW7cz+nU7iO+ht2rkBtv+Z5LGlzgHTeFjKci
+=WhX+
+-----END PGP PUBLIC KEY BLOCK-----
+"""
+
+import unittest
+if __name__ == "__main__":
+ unittest.main()
diff --git a/src/leap/keymanager/validation.py b/src/leap/keymanager/validation.py
new file mode 100644
index 0000000..6dceb78
--- /dev/null
+++ b/src/leap/keymanager/validation.py
@@ -0,0 +1,94 @@
+# -*- coding: utf-8 -*-
+# __init__.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/>.
+
+"""
+Validation levels implementation for key managment.
+
+See:
+ https://lists.riseup.net/www/arc/leap-discuss/2014-09/msg00000.html
+"""
+
+
+from datetime import datetime
+from enum import Enum
+
+
+ValidationLevel = Enum(
+ "Weak_Chain",
+ "Provider_Trust",
+ "Provider_Endorsement",
+ "Third_Party_Endorsement",
+ "Third_Party_Consensus",
+ "Historically_Auditing",
+ "Known_Key",
+ "Fingerprint")
+
+
+def toValidationLevel(value):
+ """
+ Convert a string representation of a validation level into
+ C{ValidationLevel}
+
+ :param value: validation level
+ :type value: str
+ :rtype: ValidationLevel
+ :raises ValueError: if C{value} is not a validation level
+ """
+ for level in ValidationLevel:
+ if value == str(level):
+ return level
+ raise ValueError("Not valid validation level: %s" % (value,))
+
+
+def can_upgrade(new_key, old_key):
+ """
+ :type new_key: EncryptionKey
+ :type old_key: EncryptionKey
+ :rtype: bool
+ """
+ # XXX not succesfully used and strict high validation level (#6211)
+ # XXX implement key signature checking (#6120)
+
+ # First contact
+ if old_key is None:
+ return True
+
+ if new_key.address != old_key.address:
+ # XXX how do we map multiple IDs? (#6212)
+ return False
+
+ # An update of the same key
+ if new_key.fingerprint == old_key.fingerprint:
+ # XXX wich one is newer? is that a downgrade attack? (#6210)
+ return True
+
+ # Manually verified fingerprint
+ if new_key.validation == ValidationLevel.Fingerprint:
+ return True
+
+ # Expired key and higher validation level
+ if old_key.expiry_date:
+ old_expiry_date = datetime.fromtimestamp(int(old_key.expiry_date))
+ if (old_expiry_date < datetime.now() and
+ new_key.validation >= old_key.validation):
+ return True
+
+ # No expiration date and higher validation level
+ elif new_key.validation >= old_key.validation:
+ return True
+
+ return False
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-18 04:27:55 +0000