Scientific American on Quantum Encryption
Trei, Peter
ptrei at rsasecurity.com
Thu Jan 20 07:47:38 PST 2005
I've actually seen these devices in operation. The thing
that impressed me most was that the path need not be a
single fiber from end to end - you can maintain quantum
state across a switchable fiber junction. This means
you are no longer limited to a single pair of boxes talking to
each other.
True, the SciAm article doesn't address a lot of issues,
but the fact remains that this technology is interesting
and important.
Peter Trei
> -----Original Message-----
> From: owner-cypherpunks at minder.net
> [mailto:owner-cypherpunks at minder.net]On Behalf Of Eugen Leitl
> Sent: Thursday, January 20, 2005 6:17 AM
> To: transhumantech at yahoogroups.com
> Cc: cypherpunks at al-qaeda.net
> Subject: Scientific American on Quantum Encryption
>
>
>
> Scientific American has little clue, as usual (see their
> nanotechnology
> retraction).
>
> Link: http://slashdot.org/article.pl?sid=05/01/20/0358215
> Posted by: samzenpus, on 2005-01-20 06:35:00
>
> from the just-try-and-break-it dept.
> [1]prostoalex writes "Scientific American claims that
> [2]advances in
> commercially available quantum encryption might obsolete
> the existing
> factorization-based solutions: "The National Security
> Agency or one of
> the Federal Reserve banks can now buy a
> quantum-cryptographic system
> from two small companies - and more products are on the
> way. This new
> method of encryption represents the first major commercial
> implementation for what has become known as quantum information
> science, which blends quantum mechanics and information theory. The
> ultimate technology to emerge from the field may be a
> quantum computer
> so powerful that the only way to protect against its prodigious
> code-breaking capability may be to deploy quantum-cryptographic
> techniques.""
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