[pchelpers] News:Quantum crypto backdoor closed

Cambridge boffins patch photon-splitting vuln
By Lewis Page
Published Thursday 22nd February 2007 16:07 GMT

Researchers believe they have secured a potential backdoor in a
cryptography technique known as Quantum Key Distribution (QKD).

The QKD method involves the use of laser diodes to transmit crypto keys
along fibre optic lines as streams of light quanta – individual photons.
Any attempt to eavesdrop on the transmission involves measuring it in
some way at a quantum level, which will necessarily alter the
transmitted data and reveal to the communicating parties that the key is
compromised.

More here:
http://www.theregister.co.uk/2007/02/22/quantum_crypto_patch/
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John Durham
Site http://modecideas.com
Server hosted on Ubuntu 4.10
Good advice is like good paint. It only works when applied.



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