@classmethod
def from_der(cls, data):
    """Create tag from :term:`DER` data

        :param data: :term:`DER` data
        :type  data: bytes
        :returns:    ((tag, is_constructed), bytes_read)
        :rtype:      ((\\ :class:`VASN1Tag`\\ , bool), int)

        """
    _data, num_read = cls._ber_dec_identifier(data)
    tag_cls, constructed, tag_number = _data
    return (cls(tag_cls, tag_number), constructed), num_read
