rndc-confgen(8) on macOS
The text 184db63c651d, as Mac OS X 10.6.8, Mac OS X 10.6.7, Mac OS X 10.6.6, Mac OS X 10.6.5, Mac OS X 10.6.4, Mac OS X 10.6.3, Mac OS X 10.6.2, Mac OS X 10.6.1, Mac OS X 10.6 shipped it.
rndc key generation tool
Flags it lists
-
-a -
-b -
-c -
-h -
-k -
-p -
-r -
-s -
-t -
-u