Quantum Encryption System Deemed Unbreakable, Won't Send You Hurling Through Time

Alex Castle

ImageSource: US Air Force

In what may be the biggest thing to happen to cryptography in a very long time, the world’s first computer network built with working quantum encryption technology has been demonstrated in Vienna.  The network connects six locations with a total 200 km of fiber optic cable and the encryption system is said to be completely unbreakable, according to the BBC.

The network transmits a stream of millions of individual photons a second through the cable, and can detect if anyone has attempted to listen in on the stream.

Gilles Brassard, of Montreal University explained to the BBC how the system can be unbreakable: “All quantum security schemes are based on the Heisenberg Uncertainty Principle, on the fact that you cannot measure quantum information without disturbing it.  Because of that, one can have a communications channel between two users on which it’s impossible to eavesdrop without creating a disturbance.  An eavesdropper would create a mark on it.”

If an intrusion is detected, the data transfer is immediately rerouted through different nodes.

Pretty cool, huh? Let us know what you think of this new technology after the break.

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