PGPsign posting verification

Hi,

I love the postie plugin and would like to donate my own little hack in return. I was always troubled by the fact that postie was not really secured against “false-flag” posts i.e. if you know the authorized email addresses, the email account used for processing and the authorized smtp server, it is not difficult to plant posts in wp site running postie (same is btw true for all similar wp plugins I tested before :(). So to overcome that nasty security by obscurity approach, I implemented a filter that only allows for posts by mail that are signed with a trusted pgp keys (PGP/MIME). Now I would like to share it now with the postie world if possible.

So let me know how to push the code into your codebase in case you are interested to incorporate this as a prpbably very useful security measure.

https://wordpress.org/plugins/postie/