def format_checksum(checksum_pyxb):
    """Create string representation of a PyXB Checksum object.

    Args:
      PyXB Checksum object

    Returns:
      str : Combined hexadecimal value and algorithm name.

    """
    return "{}/{}".format(
        checksum_pyxb.algorithm.upper().replace("-", ""), checksum_pyxb.value().lower()
    )