I'm looking for a software program that will allow me to encrypt (very good encryption) a message (text, images) and set it to expire either by date of after one viewing/execution. I want to send it via email as an attachment or distribute it on disk. I'd like it to be simple for the recipient to use -- e.g. they simply execute it and enter a password and the message is shown to them. Also, I'd like it to disable copy/paste...

Please let me know of any software you know of that can do this. I have many other encrption programs, but they do not allow for expiration...

Thank you.

cimotaflow