Re: Quantum cryptography finally commercialized?

2003-09-17 Thread David Wagner 
R. A. Hettinga wrote:
http://www.net-security.org/news.php?id=3583
 
Quantum cryptography finally commercialized?
Posted by Mirko Zorz - LogError
Tuesday, 16 September 2003, 1:23 PM CET

For the onlookers, this article is misinformed and should
not be relied upon for evaluating quantum cryptography.

The rest of the article contains statements like the following:

MagiQ's Navajo creates encryption keys that change up to 1,000 times a
second to prevent eavesdroppers from deciphering the transmitted data
packets.  [...]  While AES is very secure, the combination of AES and
Navajo is theoretically absolutely secure: unbreakable.

The unbreakable claim is unfounded.

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Quantum cryptography finally commercialized?

2003-09-16 Thread R. A. Hettinga 
http://www.net-security.org/news.php?id=3583

Help Net Security -

Quantum cryptography finally commercialized?
Posted by Mirko Zorz - LogError
Tuesday, 16 September 2003, 1:23 PM CET


Start-up MagiQ Technologies, from Somerville, Massachusetts, has released
the first commercial implementation of quantum cryptography, the
much-heralded solution to the perfect encryption cipher. Theoretically,
encryption ciphers created using quantum physics are unbreakable.

While MagiQ Technologies' product, Navajo, isn't itself a quantum device it
uses one of the fundamental tenets of quantum theory: Heisenberg's
Uncertainty Principle, to create a Quantum Key Distribution (QKD) network.
Werner Heisenberg first published his theory in 1927, stating that the more
precisely the position of is known, the less precisely the momentum is
known. This succinct statement addresses the uncertain relationship between
the position and the momentum (mass times velocity) of a subatomic
particle, such as an electron, and has profound impact on the development
of future information systems.


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[predicting the end of the world] has not been found agreeable to
experience. -- Edward Gibbon, 'Decline and Fall of the Roman Empire'

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