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Reference Pulse Attack on Continuous-Variable Quantum Key Distribution with Local Local Oscillator under trusted phase noise

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cam.issuedOnline2019-01-02
dc.contributor.authorRen, Shengjun
dc.contributor.authorKumar, Rupesh
dc.contributor.authorWonfor, Adrian
dc.contributor.authorTang, Xinke
dc.contributor.authorPenty, Richard
dc.contributor.authorWhite, Ian
dc.contributor.orcidRen, Shengjun [0000-0002-9596-1159]
dc.contributor.orcidWonfor, Adrian [0000-0003-2219-7900]
dc.contributor.orcidPenty, Richard [0000-0003-4605-1455]
dc.contributor.orcidWhite, Ian [0000-0002-7368-0305]
dc.date.accessioned2018-12-14T00:32:10Z
dc.date.available2018-12-14T00:32:10Z
dc.date.issued2019
dc.description.abstractWe show that partially trusting the phase noise associated with estimation uncertainty in a LLO CVQKD system allows one to exchange higher secure key rates than in the case of untrusted phase noise. However, this opens a security loophole through the manipulation of the reference pulse amplitude. We label this as "reference pulse attack" which is applicable to all LLO-CVQKD systems if the phase noise is trusted. We show that, at the optimal reference pulse intensity level, Eve achieves unity attack efficiency at 23.8km and 32.0km while using lossless and 0.14dB/km loss channels, respectively, for her attack. However, in order to maintain the performance enhancement from partially trusting the phase noise, countermeasures have been proposed. As a result, the LLO-CVQKD system with partially trusted phase noise owns a superior key rate at 20km by an order 9.5, and extended transmission distance by 45%, than that of the phase noise untrusted system.
dc.identifier.doi10.17863/CAM.34257
dc.identifier.eissn1520-8540
dc.identifier.issn0740-3224
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/286948
dc.language.isoeng
dc.publisherOptical Society of America
dc.publisher.urlhttp://dx.doi.org/10.1364/JOSAB.36.0000B7
dc.subjectquant-ph
dc.subjectquant-ph
dc.titleReference Pulse Attack on Continuous-Variable Quantum Key Distribution with Local Local Oscillator under trusted phase noise
dc.typeArticle
dcterms.dateAccepted2018-11-14
prism.endingPageB15
prism.issueIdentifier3
prism.publicationNameJournal of the Optical Society of America B: Optical Physics
prism.startingPageB7
prism.volume36
pubs.funder-project-idEPSRC (1817582)
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/M013472/1)
pubs.funder-project-idEPSRC (via University of York) (EP/M013472/1)
rioxxterms.licenseref.startdate2018-11-14
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.typeJournal Article/Review
rioxxterms.versionAM
rioxxterms.versionofrecord10.1364/JOSAB.36.0000B7

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