docs: def key(self, user="", areq=None):
          """
          Return a key (the session id)
  
          :param user: User id
          :param areq: The authorization request
          :return: An ID
          """
          csum = hashlib.new('sha224')
          csum.update(rndstr(32).encode('utf-8'))
          return csum.hexdigest()