Behind the First Secure Quantum Crypto Network

schliz writes "Researchers behind the world's largest quantum encrypted network said the technology could secure business networks inside six years. The prototype Quantum Key Distribution network was built by the Secure Communication Based On Quantum Cryptography (SECOQC) group last year. It is described in a journal paper published by the Institute of Physics this week, which includes details on how it is based on the trusted-repeater paradigm."

Comments

This is only a publicity stunt

[gweihir]

Nobody needs quantum key exchange (no, it is not even Cryptography, despite the claims). The data in these links needs to be encrypted with an ordinary cipher anyways, so there really is no need to uses something flashy for the key exchange. In addition, nobody knows whether quantum transmission is really as secure as claimed. These are theoretical predictions from a physical theory, and so far all of these have proven to be only partially accurate.

Doing this the conventional way is cheap, fast, reliable and with a known and scalable security level. Doing this the quantum way is plain stupid, except in a laboratory for research purposes.