[Dailydave] Quantum Key Distribution

[Alfredo Ortega]

I don't see it as much as a QKD advancement but as a Satellite and
tracking advancement, as you have to somehow receive individual photons
from earth while orbiting at 30 km/s. And if you can track your
satellites this accurately, you can track everybody elses.



On 11/08/17 03:41, Jean-Philippe Aumasson wrote:
> Mostly PR I believe. With this satellite-QKD thing the Chinese probably
> want to show their own expertise (if they built this alone and not with
> Western companies), whereas a couple years ago they were discussing with
> IdQuantique and others to build QKD backbones. Are the Chinese into
> "quantum supremacy" projects like Europeans?
> 
> I don't see satellite-QKD as a way to defeat future (?) quantum computers,
> cos satellite-to-earth coms are usually symmetric-crypto based, something
> unbroken by a QC. BTW QKD research doesn't have much to do with QC.
> 
> On Thu, Aug 10, 2017 at 5:42 PM dave aitel <dave at immunityinc.com> wrote:
> 
>> While nothing cryptographic has leaked from the Snowden documents to the
>> public, Edward Snowden did give up a lot of things to the Chinese to get
>> out of Hong Kong, and I notice that they've recently invested very
>> heavily in Quantum Key Distrubtion (for example, shooting satellites up
>> with entangled photons, etc.)
>>
>> So my question is: Is this something they learned about US/Russian
>> capability against other cryptographics that we are not aware of? Did
>> they study up and learn something themselves that we are not aware of?
>> Or is this a total lark or PR stunt? Or maybe it's just not that much
>> money to them, so they might as well?
>>
>> -dave
>>
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> 
> 
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