On 02/06/2017 08:46 AM, Georgi Guninski wrote: > On Sun, Feb 05, 2017 at 06:35:21PM -0800, Razer wrote: >>> More information: High-dimensional quantum cloning and applications to >>> quantum hacking, Science Advances 03 Feb 2017, DOI: >>> 10.1126/sciadv.1601915 >>> >>> Provided by University of Ottawa >> https://phys.org/news/2017-02-quantum-networks-hacking-threats.html >> > http://advances.sciencemag.org/content/3/2/e1601915 > |In addition, a cloning attack on a Bennett and Brassard (BB84) > |quantum key distribution protocol is experimentally demonstrated > |to reveal the robustness of high-dimensional states in quantum > |cryptography. > > > I can't parse the technical stuff. Does the last paragraph mean > they broke "old quantum crypto"? >
>From the abstract and the last paragraph of the article what I'm seeing is they can detect a hack on the data (apparently even if it's simply a regurgitation of the original) because the 'noise' created by the tampering itself appears to leave a 'standard recognizable signature'. But pardon if that's not the answer to the question you asked... as the Sj: line implies this is way above my pay-grade. Rr