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Re: (eternity) Eternity as a secure filesystem/backup medium
On Wed, Jan 21, 1998 at 03:04:07AM +0100, Anonymous wrote:
> Bill Stewart writes:
>
> > >Do the math, though, for 128bit. There are traditional analyses
> > >which include the amount of silicon on the earth, the number of atoms
> > >in the universe, etc. The general consensus is that traditional
> > >techniques are not feasible for brute forcing 128bit ciphers before
> > >the heat death of the universe.
> >
> > Hard to say. Assuming that Quantum Cryptography doesn't allow
> > finite-sized computers to do large exponentially complex calculations
> > in short finite time, you're probably limited by the number of atoms
> > in the available supply of planets, and Heisenberg may still get you
> > if that's not a low enough limit. Moore's law isn't forever.
>
> A practical 128-bit key-cracker could be built with about 10000 cubic
^^^^^^^^^
> meters of silicon. (Figure one transistor per cubic micron, 1 ghz
> operation, do the math...) The technology to build a computer of that
> size is still a few years away, but it is theoretically possible to build
^^^^^^^^^^^^^
> a 128-bit key-cracker without using quantum computers or travelling to
> other planets.
"In theory, theory and practice are the same, but in practice they
are different."
--
Kent Crispin, PAB Chair "No reason to get excited",
[email protected] the thief he kindly spoke...
PGP fingerprint: B1 8B 72 ED 55 21 5E 44 61 F4 58 0F 72 10 65 55
http://songbird.com/kent/pgp_key.html