PGP
Some scripts I have written:
- Generate challenges for PGP key signing
 - A gpg-agent startup script that cleans out old stuff, ensures uniqueness, etc.
 - Instructions for dealing with a stale keyserver URL
 - My "Pine PGP Filters" scripts to use GnuPG with Alpine
 
Other stuff
- A PDF of a presentation I did describing one way to do a PGP keysigning event.
 - My new (preferred) PGP key
Trace the trust path from your PGP key to mine 
 - My old (though still valid) PGP key