Post-quantum key exchange - a new hope

dc.contributor.authorAlkim, Erdem
dc.contributor.authorDucas, Leo
dc.contributor.authorPoeppelmann, Thomas
dc.contributor.authorSchwabe, Peter
dc.date.accessioned2019-10-27T22:57:53Z
dc.date.available2019-10-27T22:57:53Z
dc.date.issued2016
dc.departmentEge Üniversitesien_US
dc.description25th USENIX Security Symposium -- AUG 10-12, 2016 -- Austin, TXen_US
dc.description.abstractAt IEEE Security & Privacy 2015, Bos, Costello, Naehrig, and Stebila proposed an instantiation of Peikert's ring-learning-with-errors-based (Ring-LWE) key-exchange protocol (PQCrypto 2014), together with an implementation integrated into OpenSSL, with the affirmed goal of providing post-quantum security for TLS. In this work we revisit their instantiation and stand-alone implementation. Specifically, we propose new parameters and a better suited error distribution, analyze the scheme's hardness against attacks by quantum computers in a conservative way, introduce a new and more efficient error-reconciliation mechanism, and propose a defense against backdoors and all-for-the-price-of-one attacks. By these measures and for the same lattice dimension, we more than double the security parameter, halve the communication overhead, and speed up computation by more than a factor of 8 in a portable C implementation and by more than a factor of 27 in an optimized implementation targeting current Intel CPUs. These speedups are achieved with comprehensive protection against timing attacks.en_US
dc.description.sponsorshipUSENIX, Facebook, NSF, Cisco, Google, Microsoft, Neustar, IBM Res, Symantec, ACM Queue, ADMIN, CRC Press, Linux Pro Magazine, NetApp, VMWare, LXer, UserFriendly Org, OReilly Media, No Starch Press, Virus Bulletinen_US
dc.identifier.endpage343en_US
dc.identifier.isbn978-1-931971-32-4
dc.identifier.startpage327en_US
dc.identifier.urihttps://hdl.handle.net/11454/51368
dc.identifier.wosWOS:000385263000020en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.language.isoenen_US
dc.publisherUsenix Assocen_US
dc.relation.ispartofProceedings of the 25Th Usenix Security Symposiumen_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.titlePost-quantum key exchange - a new hopeen_US
dc.typeConference Objecten_US

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