Nasty is a program that helps you to recover the passphrase of your PGP or GPG-key in case you forget or lost it. It is mostly a proof-of-concept: with a different implementation this program could be at least 100x faster.
It needs the gpgme library.
You want to include the settings from this page or else the gnupg-agent will bother you with a passphrase-dialog for each iteration (which would defeat the purpose of nasty).
Download link: nasty-0.6.tgz
> This document describes several 'attacks' on pgp.