Oh special hidden program... which contains a password, even if you're not seeing it.
There's only one way to encrypt things and that is using a password.
Unless you use WWII era systems where the algorithm is secret, of course. Which is totally insecure, as there are not so many algorithms families out there.
But that's ok! I just think it's funny. There's this program called Keepass (which I can't stop reading as Keep-Ass) that stores passwords and encrypts them... and needs a master pasword. Dawg.
And I plan to use it.