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December 19, 2015 12:00 am
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/cqQ-GMLIaWE/swedish-researchers-break-unbreakable-quantum-cryptography
Swedish Researchers Break 'Unbreakable' Quantum Cryptography
New submitter etnoy writes: Quantum key distribution is supposed to be a perfectly secure method for encrypting information. Even with access to an infinitely fast computer, an attacker cannot eavesdrop on the encrypted channel since it is protected by the laws of quantum mechanics. In recent years, several research groups have developed a new method for quantum key distribution, called "device independence." This is a simple yet effective way to detect intrusion. Now, a group of Swedish researchers question the security of some of these device-independent protocols. They show that it is possible to break the security by faking a violation of the famous Bell inequality. By sending strong pulses of light, they blind the photodetectors at the receiving stations which in turn allows them to extract the secret information sent between Alice and Bob.Read more of this story at Slashdot.
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/cqQ-GMLIaWE/swedish-researchers-break-unbreakable-quantum-cryptography
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