dropbearkey(1) on Linux
The text 5caf7c4f8286, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye) shipped it.
create private keys for the use with dropbear(8) or dbclient(1)
Flags it lists
-
-f -
-s -
-t -
-y