arcsign - Script for ARC signing messages on stdin

       This  version  of  arcsign  was  written by Brandon Long <blong@google.com> and is derived from dkimsign,
       written by Greg Hewgill <greg@hewgill.com>.

       This man-page was created by Scott Kitterman <scott@kitterman.com> and is licensed under the  same  terms
       as dkimpy.

                                                   2019-04-14                                         arcsign(1)

       arcsign  is  a  filter  that  reads  an  RFC822 message on standard input, and writes the same message on
       standard output with a ARC-Signature lines prepended.

       arcsign - Script for ARC signing messages on stdin

       The signing options are specified on the command line:

       arcsign selector domain privatekeyfile srv_id

       Note: arcsign will only use authentication results header fields with an authserv-id that matches  srv_id
       as the input fields for the ARC chain.

       0.9.2