def remove_keys_by_type(self, typ):
        """
        Remove keys that are of a specific type.
        
        :param typ: Type of key (rsa, ec, oct, ..)
        """
        _typs = [typ.lower(), typ.upper()]
        self._keys = [k for k in self._keys if not k.kty in _typs]
Remove keys that are of a specific type.
        
        :param typ: Type of key (rsa, ec, oct, ..)