Actually what mohaughn is saying is dead right.
Even in theory, there is no way to crack data that uses quantum encryprtion.

Think of it like this, it's packaged up in a polished black perspex box so no-one can see in it and, with no marks what so ever, and it's passed along a line of people. Now when it get's to the other end, there's going to be fingerprints on the box as it was passed along, but it's examined before it is opened, and if there is any cracks or anything then they discard it and change to a blue perspex box.

It's based on some pretty wacked formulae.

I doubt that quantum encryption will be cracked with any technology that we come up with in the next 10 years or so.