2 ms·

true, unbreakable now, but probably breakable in a few years.... You store whatever SIGINT you pick up now, and understand it in a few years. A lot of it will s

• comex 13y ago
  True. But (a) These quantum links are physical cables that have to be laid between sites. If you lay your own normal cable rather than using the Internet, you probably won't be intercepted either. Or... (b) While shuttling around massive XOR pads on hard drives is probably too annoying for most individuals, it's quite feasible for the kinds of organizations that could buy this stuff and a whole lot cheaper, unless they have enormous quantities of data to transfer; though the scheme can then be broken by passively copying the pad rather than continuously actively subverting the quantum link, I'm not sure this makes much difference in practice.