On Thu, Dec 19, 2002 at 09:17:23AM +0100, PUYDT Julien wrote: > Le mer 18/12/2002 ā 18:45, Niels Möller a écrit : > > use some other construction that is secure even if the enemy has infinite > > computational power > > I'm pretty sure it isn't possible: > 1) you always want someone to read your message; hence no cryptalgo can > be infinitely secure, there must be some key; > 2) even with a finite computational power, any finitely complex problem > may be solved in a finite time; the point is that "finite" doesn't mean > "small";
There is still quantum cryptography. It's provable secure because if you sniff the message is destroyed. However, it's not really something you can use today, although I think they already managed to bridge a couple of meters over thin air. Thanks, Marcus -- `Rhubarb is no Egyptian god.' GNU http://www.gnu.org [EMAIL PROTECTED] Marcus Brinkmann The Hurd http://www.gnu.org/software/hurd/ [EMAIL PROTECTED] http://www.marcus-brinkmann.de/