The Technologies of Freedom Engineering Freedom Engineering demands that the individual seeking freedom must commit acts which others will look upon as 'illegal acts'.
Every user has a pubic key and a private key.
Others will use you public key to encrypt messages they send to you. And you will use your private key to open these messages. To open it he uses his private key. You can display your PGP public key on your web-site and send it along with all of your messages. You can buy the latest commercial version of PGP at Network Associates or you can download a shareware version from MIT .