Unhackable telecom networks are not far away

Shaun108 said:
Nothing is uncrackable.
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+1

Quantum cryptography relies on the rules of quantum theory to generate uncrackable codes that encrypt data in a way that reveals if it has been eavesdropped or tampered with.
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Detecting eavesdropping is impossible if you don't control the entire data path.
Repeaters are required for any signal propagation (even light) over a significant distance and repeaters need to reconstruct the signal to boost it for the next hop therefore some sort of tampering (signal reconstruction) will be required.
It only takes one compromised router/repeater in the path to copy data transparently.
 
I wouldn't call Quantum Cryptography uncrackable, but its able to detect eavesdropping and tampering purely due to the way it operates.....
 
ToxicBunny said:
I wouldn't call Quantum Cryptography uncrackable, but its able to detect eavesdropping and tampering purely due to the way it operates.....
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From point-to-point yes but through uncontrolled repeaters/routers in the data path (a.k.a. the Internet) I don't think so.
 
I heard/read somewhere that someone devised a method to "eavesdrop" without affecting the data stream, so undetectable ... if that is so .. then this is moot .. and if it does not exist yet ... I am sure it will soon enough :)
 
The only unhackable communication system in history was the ansible, and that only exists in science fiction.

Still, it makes for a good headline :)
 
Paul_S said:
From point-to-point yes but through uncontrolled repeaters/routers in the data path (a.k.a. the Internet) I don't think so.
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Which is why the primary plan of action is ground-satellite-ground for the quantum stuff. One clean shot of that & then you can just use that as the encryption keys ala one time pad. So you need 20ish satellites to cover the globe & then you've got bullet proof security. Not feasible for the internet, but thats beside the point. This is mainly interesting for financial & secret gov stuff anyway.
 
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