Security maven Bruce Schneier (who’s an active science fiction fan, by the way) has a column up at Wired that gives quantum cryptography a vigorous kicking. Evidently he’s been noticing the same stories as myself, because he points out that “headlines like the BBC’s “‘Unbreakable’ encryption unveiled” are a bit much.” O RLY?
The big difference between Schneier and me, though, is that he really knows how this stuff all works… and as such, he’s not seduced by quantum cryptography’s golden promises:
Security is a chain; it’s as strong as the weakest link. Mathematical cryptography, as bad as it sometimes is, is the strongest link in most security chains. Our symmetric and public-key algorithms are pretty good, even though they’re not based on much rigorous mathematical theory. The real problems are elsewhere: computer security, network security, user interface and so on.
Let’s not forget the weakest link of all, either – the users themselves… [image by the anonymous collective]