signify-openbsd(1) on Linux
The text af3cdb9ad3d6, as Debian 9 (Stretch) shipped it.
cryptographically sign and verify files
Flags it lists
-
-C -
-G -
-S -
-V -
-c -
-e -
-m -
-n -
-p -
-q -
-s -
-x