@Override
 public void storeKey(Key key) throws KeyStoringException {
   Path keyPath = FileSystemService.getUserRapidMinerDir().toPath().resolve(DEFAULTKEY_FILE_NAME);
   try {
     KeyGeneratorTool.storeKey(key.getEncoded(), keyPath);
   } catch (IOException e) {
     throw new KeyStoringException("Could not store new cipher key", e);
   }
 }