dnssec-dsfromkey(8) on macOS
The text 67c5250e3c8b, as Mac OS X 10.7.5 shipped it.
DNSSEC DS RR generation tool
Flags it lists
-
-1 -
-2 -
-A -
-K -
-a -
-c -
-f -
-l -
-s -
-v