dnssec-keygen(8) on macOS
The text bfc863c4aa58, as macOS 10.13.3, macOS 10.13.2, macOS 10.13.1, macOS 10.13 shipped it.
DNSSEC key generation tool
Flags it lists
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-3 -
-A -
-C -
-D -
-E -
-G -
-I -
-K -
-L -
-P -
-R -
-S -
-T -
-V -
-a -
-b -
-c -
-f -
-g -
-h -
-i -
-k -
-n -
-p -
-q -
-r -
-s -
-t -
-v