53 lines
1.5 KiB
Python
53 lines
1.5 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import base64
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from Crypto.Cipher import AES
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from Crypto import Random
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from heat.openstack.common import cfg
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from heat.openstack.common import log as logging
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auth_opts = [
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cfg.StrOpt('auth_encryption_key',
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default='notgood',
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help="Encryption key used for authentication info in database")
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]
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cfg.CONF.register_opts(auth_opts)
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logger = logging.getLogger('heat.engine.auth')
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def encrypt(auth_info):
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if auth_info is None:
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return None
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iv = Random.new().read(AES.block_size)
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cipher = AES.new(cfg.CONF.auth_encryption_key[:32], AES.MODE_CFB, iv)
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res = base64.b64encode(iv + cipher.encrypt(auth_info))
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return res
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def decrypt(auth_info):
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if auth_info is None:
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return None
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auth = base64.b64decode(auth_info)
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iv = auth[:AES.block_size]
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cipher = AES.new(cfg.CONF.auth_encryption_key[:32], AES.MODE_CFB, iv)
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res = cipher.decrypt(auth[AES.block_size:])
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return res
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