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April 9, 2012
Mike Tuttle Can A New Quantum Encryption Foil Sophisticated Hackers?
By Mike Tuttle
A research team led by University of Toronto Professor Hoi-Kwong Lo has found a new quantum encryption method to foil even the most sophisticated hackers. The discovery is outlined in a recent issue of Physical Review Letters.

Quantum cryptography is, in principle, a foolproof way to prevent hacking. It ensures that any attempt by an eavesdropper to read encoded communication data will lead to disturbances that can be detected by the legitimate users. Therefore, quantum cryptography allows the transmission of an unconditionally secure encryption key between two users, "Alice" and "Bob," in the presence of a potential hacker, "Eve." The encryption key is communicated using light signals and is received using photon detectors. The challenge is that Eve can intercept and manipulate these signals.

"Photon detectors have turned out to be an Achilles' heel for quantum key distribution (QKD), inadvertently opening the door to subtle side-channel attacks, most famously quantum hacking," wrote Dr. Charles Bennett, ...

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