old_contents: # vim: tabstop=4 shiftwidth=4 softtabstop=4
  
  #
  #    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.
  
  import base64
  
  from Crypto.Cipher import AES
  from Crypto import Random
  
  from heat.openstack.common import cfg
  from heat.openstack.common import log as logging
  
  
  auth_opts = [
      cfg.StrOpt('auth_encryption_key',
                 default='notgood',
                 help="Encryption key used for authentication info in database")
  ]
  
  cfg.CONF.register_opts(auth_opts)
  
  logger = logging.getLogger(__name__)
  
  
  def encrypt(auth_info):
      if auth_info is None:
          return None
      iv = Random.new().read(AES.block_size)
      cipher = AES.new(cfg.CONF.auth_encryption_key[:32], AES.MODE_CFB, iv)
      res = base64.b64encode(iv + cipher.encrypt(auth_info))
      return res
  
  
  def decrypt(auth_info):
      if auth_info is None:
          return None
      auth = base64.b64decode(auth_info)
      iv = auth[:AES.block_size]
      cipher = AES.new(cfg.CONF.auth_encryption_key[:32], AES.MODE_CFB, iv)
      res = cipher.decrypt(auth[AES.block_size:])
      return res
  
new_contents: # vim: tabstop=4 shiftwidth=4 softtabstop=4
  
  #
  #    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.
  
  import base64
  
  from Crypto.Cipher import AES
  from Crypto import Random
  
  from heat.openstack.common import cfg
  from heat.openstack.common import log as logging
  
  
  auth_opts = [
      cfg.StrOpt('auth_encryption_key',
                 default='notgood but just long enough i think',
                 help="Encryption key used for authentication info in database")
  ]
  
  cfg.CONF.register_opts(auth_opts)
  
  logger = logging.getLogger(__name__)
  
  
  def encrypt(auth_info):
      if auth_info is None:
          return None
      iv = Random.new().read(AES.block_size)
      cipher = AES.new(cfg.CONF.auth_encryption_key[:32], AES.MODE_CFB, iv)
      res = base64.b64encode(iv + cipher.encrypt(auth_info))
      return res
  
  
  def decrypt(auth_info):
      if auth_info is None:
          return None
      auth = base64.b64decode(auth_info)
      iv = auth[:AES.block_size]
      cipher = AES.new(cfg.CONF.auth_encryption_key[:32], AES.MODE_CFB, iv)
      res = cipher.decrypt(auth[AES.block_size:])
      return res
  
subject: Make default encryption key long enough for unit tests