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Comment Re:Yikes! (Score 2) 280

But that case was designed for the Kindle 2, which (I think?) *doesn't* put power across those pins. If that's the case, this is mostly a Kindle 3 design flaw - they should have made the slot spacing different so you couldn't use a Kindle 2 case.

Comment Re:On The Practical Side (Score 1) 467

No, no, no. For this, use a one-time pad.

What you do is this:

Take your file (A). Generate a block of high-entropy random data (B).

Now generate (A xor B), and throw away A. You now have two random files, B and (A xor B), and B xor (A xor B) will give you A again.

A cute variant: instead of generating a really random B, use pseudo-random data generated from a known key (mp3 rip of some song of a particular version of a CD, gzip of linux kernel source), and don't even keep B with you; regenerate it on the other side. There are lots of ways to screw this trick up, though, so consult a cryptographer.

You could use more than 2 files if you want, the idea is basically the same.

Comment Re:Is this chip a bargin? (Score 1) 292

A lot less; it's not a coincidence that IBM never publishes any industry-standard benchmarks on these things.

Don't get me wrong; they're fast, but they're not magic, and they're not remotely competitive on a price/raw-compute-cycle basis. If that's what you want go get a beowulf cluster.

Comment Re:What would the impacts of this be for cryptogra (Score 0) 457

Short form:if P=NP, crypto is something of a futile effort - that implies that there's a non-brute-force crack to every possible private-key algorythm. I suppose it might still be slow enough for the crypto to be useful, but I woudl expect you would end up needing gigantic keys.

Most everybody assumed that P!=NP, but nobody has been able to prove it.

Comment Re:So Many Questions (Score 1) 303

I think a tetrahedron, growing into a 8-sided d8 kind of thing, then back - a cube has six faces, but a hypercube has eight cubes for, er, faces (one on each end, and then a cube connecting the faces of each of those).

Not at all sure, though.

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