826aed0ec7
oslo.i18n provides the i18n functions that were provided by oslo-incubator's gettextutils module. Some tests that were using internal details of the library were removed. Change-Id: I44cfd5552e0dd86af21073419d31622f5fdb28e0
64 lines
2.5 KiB
Python
64 lines
2.5 KiB
Python
# Copyright (c) 2013 The Johns Hopkins University/Applied Physics Laboratory
|
|
# All Rights Reserved.
|
|
#
|
|
# 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.
|
|
|
|
"""
|
|
An implementation of a key manager that reads its key from the project's
|
|
configuration options.
|
|
|
|
This key manager implementation provides limited security, assuming that the
|
|
key remains secret. Using the volume encryption feature as an example,
|
|
encryption provides protection against a lost or stolen disk, assuming that
|
|
the configuration file that contains the key is not stored on the disk.
|
|
Encryption also protects the confidentiality of data as it is transmitted via
|
|
iSCSI from the compute host to the storage host (again assuming that an
|
|
attacker who intercepts the data does not know the secret key).
|
|
|
|
Because this implementation uses a single, fixed key, it proffers no
|
|
protection once that key is compromised. In particular, different volumes
|
|
encrypted with a key provided by this key manager actually share the same
|
|
encryption key so *any* volume can be decrypted once the fixed key is known.
|
|
"""
|
|
|
|
from oslo.config import cfg
|
|
|
|
from nova.i18n import _
|
|
from nova.keymgr import single_key_mgr
|
|
|
|
key_mgr_opts = [
|
|
cfg.StrOpt('fixed_key',
|
|
help='Fixed key returned by key manager, specified in hex'),
|
|
]
|
|
|
|
CONF = cfg.CONF
|
|
CONF.register_opts(key_mgr_opts, group='keymgr')
|
|
|
|
|
|
class ConfKeyManager(single_key_mgr.SingleKeyManager):
|
|
"""This key manager implementation supports all the methods specified by
|
|
the key manager interface. This implementation creates a single key in
|
|
response to all invocations of create_key. Side effects
|
|
(e.g., raising exceptions) for each method are handled
|
|
as specified by the key manager interface.
|
|
"""
|
|
|
|
def __init__(self):
|
|
if CONF.keymgr.fixed_key is None:
|
|
raise ValueError(_('keymgr.fixed_key not defined'))
|
|
self._hex_key = CONF.keymgr.fixed_key
|
|
super(ConfKeyManager, self).__init__()
|
|
|
|
def _generate_hex_key(self, **kwargs):
|
|
return self._hex_key
|