Quantum crypto backdoor closed
Researchers believe they have secured a potential backdoor in a cryptography technique known as Quantum Key Distribution (QKD).
The QKD method involves the use of laser diodes to transmit crypto keys along fibre optic lines as streams of light quanta – individual photons. Any attempt to eavesdrop on the transmission involves measuring it in some way at a quantum level, which will necessarily alter the transmitted data and reveal to the communicating parties that the key is compromised.
At The Register.
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