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Perfect eavesdropping on a quantum cryptography system
- michael_nielsen 15y agoI haven't verified the results of this particular paper, but there is a broad class of potential problems along these lines with quantum cryptography. Here's a short piece I wrote about these problems in 2004: http://michaelnielsen.org/blog/whats-wrong-with-those-quantum-cryptosystems/ http://michaelnielsen.org/blog/whats-wrong-with-those-quantu... The short summary is that side channel attacks are a real problem with quantum cryptography, potentially moreso than with conventional crypto. The reason is that only a limited number of people have the resources to seriously test (and thus improve) real-world implementations of quantum cryptosystems systems. I.e., quantum crypto greatly raises the bar to do white hat hacking.
- lordlarm 15y agoOn our university these guys built a complete eavesdropper, installed in a running quantum cryptography link, and actually extracted the full ‘secret’ key unnoticed. Read more about it here: http://www.iet.ntnu.no/groups/optics/qcr/ http://www.iet.ntnu.no/groups/optics/qcr/ Pictures and description: http://www.iet.ntnu.no/groups/optics/qcr/full-eavesdropping-2011/ http://www.iet.ntnu.no/groups/optics/qcr/full-eavesdropping-...
- cldwalker 15y agoFor the majority of us, a much more readable description of this experiment: http://physicsworld.com/cws/article/news/46305 http://physicsworld.com/cws/article/news/46305
- flippyhead 15y agoWell, that didn't take long
- enki 15y agothat's why we came up with http://arxiv.org/abs/quant-ph/0408179 http://arxiv.org/abs/quant-ph/0408179 in 2004 (one of the co-authors here) announcing the bases in public isn't a great idea
- roschdal 15y agoVadim Makarov's homepage: http://www.vad1.com/ http://www.vad1.com/