The method that Daniele describes is called encryption with a "One Time Pad". A somewhat readable description is in Wikipedia: http://en.wikipedia.org/wiki/One_time_pad
This encryption method is a theoretically perfectly secure, but there are big organizational problems connected to its use. It interestingly does not require any technology. The Taliban could use it if they had someone with good handwriting, much patience, and a passion for throwing dices. Kind regards, Eike. _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
