CKSUM_UNKEYED
16, 16, CKSUM_UNKEYED },
16, 16, CKSUM_UNKEYED },
20, 20, CKSUM_UNKEYED },
20, 20, CKSUM_UNKEYED },
if (ctp->flags & CKSUM_UNKEYED)
return !(ctp->flags & CKSUM_UNKEYED);