[Cryptography] The ultimate physical limits of privacy

[tpb-crypto at laposte.net]

> Message du 29/03/14 00:18
> De : dan at geer.org
> A : cryptography at metzdowd.com
> Copie à : 
> Objet : [Cryptography] The ultimate physical limits of privacy
>

> 
> [ not free/cheap ]
> 
> http://www.nature.com/nature/journal/v507/n7493/full/nature13132.html?WT.ec_id=NATURE-20140327
> 
> The ultimate physical limits of privacy
> 
> Can you keep secrets safe from eavesdroppers? Yes you can, say Artur
> Ekert and Renato Renner. In a Perspective article they argue that
> recent developments in quantum cryptography, coupled with the fact
> that we still possess free will, suggest that truly private
> communication will always be possible, even in a world with access
> to as yet undiscovered code-breaking technologies. The answer lies
> in new insights into the nature of randomness and non-local
> correlations. Thus equipped it should be possible to outsmart even
> the most powerful surveillance procedures.
> 

Can you please elaborate on the paper's contents? At least the abstract?