Stealing quantum keys the easy way

[imatfaal]

http://physicsworld....icle/news/46734

A straightforward and effective way for eavesdroppers to copy secret keys from quantum cryptographic systems has been tested by physicists in Germany. The technique does not require intercepting the quantum code itself, but merely sending a series of well timed weak light pulses to blind the receiver's detectors and then listening to a public, unencrypted message between sender and receiver.

 

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