53c53,59
<                                      public_key_material=self.file_name)
---
>                                      public_key_material=self.read_user_data(self.file_name))
> 
>     def read_user_data(self, user_data_filename):
>         fp = open(user_data_filename)
>         user_data = fp.read()
>         fp.close()
>         return user_data