On 10/19/2009 12:30 PM, SharkD wrote:
> I read recently in Scientific American about quantum technology being
> used in encryption. Basically the idea is that the individual particles
> used in the transmission signal are charged or spun at the quantum level
> in such a way (without affecting the data itself) that the signal can't
> be intercepted or examined without corrupting this charge or spin and
> marking the signal as compromised. This got me thinking as to whether an
> arbitrary pattern of electrons or light (i.e. an audio file being
> transmitted or stored on a medium) could be "tagged" at the quantum
> level, thus making it unreadable without proper hardware (or at least
> the correct key) and making it useful for DRM purposes. Since the data
> itself does not change (just some normally ignored/discarded
> characteristics of the transmission signal), it would not affect the
> size or performance of the DRM encoded data.
>
> Here's the link:
>
> http://www.scientificamerican.com/article.cfm?id=swiss-test-quantum-cryptography
>
>
> Mike

Of course, if quantum computing were to ever emerge as a viable 
technology, this would no longer work since the technique "piggy-backs" 
upon existing technology.

Mike

Post a reply to this message