Quote:
Originally Posted by flatbutt
BB84 is a quantum key distribution scheme developed by Charles Bennett and Gilles Brassard in 1984. It is the first quantum cryptography protocol. The protocol is provably secure, relying on the quantum property that information gain is only possible at the expense of disturbing the signal if the two states one is trying to distinguish are not orthogonal (see no-cloning theorem) and an authenticated public classical channel. It is usually explained as a method of securely communicating a private key from one party to another for use in one-time pad encryption.
OH I see...  |
It still seems like that only uses quantum-info as a tamper-indicating device. It doesn't stop someone from hacking it - it's just impossible to cover up the hack. Maybe that's how it's useful for distributing OTKs? So that both sides know that nobody's peeked?
Computing is a whole nuther thing. We have one at work and it seems like they're still working on what to do with it. Like they have to invent completely new mathematics and programming concepts. It _sounds_ cool though with all of the clacking and pumping of the massive kit of cryo gear that keeps it alive.