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dc.contributor.advisorBakke Buan, Aslaknb_NO
dc.contributor.authorNordli, Børgenb_NO
dc.date.accessioned2014-12-19T13:57:52Z
dc.date.available2014-12-19T13:57:52Z
dc.date.created2010-09-04nb_NO
dc.date.issued2007nb_NO
dc.identifier348546nb_NO
dc.identifierntnudaim:3651nb_NO
dc.identifier.urihttp://hdl.handle.net/11250/258394
dc.description.abstractWe present the latest formal security definitions for blind signature schemes and for group signature schemes. We start by introducing theory about algorithms, probability distributions, distinguishers, protocol attacks and experiments, which is needed to understand the definitions. In the case of blind signatures, we define blindness and non-forgeability, and we present the blind Schnorr and Okamoto-Schnorr signature schemes and prove that the latter is secure. For group signatures, we define full-anonymity and full-non-forgeability (full-traceability). In the end, we sketch a secure general group signature scheme presented by Bellare, Micciancio and Warinschi.nb_NO
dc.languageengnb_NO
dc.publisherInstitutt for matematiske fagnb_NO
dc.subjectntnudaimno_NO
dc.subjectSIF3 fysikk og matematikkno_NO
dc.subjectIndustriell matematikkno_NO
dc.titleSecurity analysis of blind signatures and group signaturesnb_NO
dc.typeMaster thesisnb_NO
dc.source.pagenumber48nb_NO
dc.contributor.departmentNorges teknisk-naturvitenskapelige universitet, Fakultet for informasjonsteknologi, matematikk og elektroteknikk, Institutt for matematiske fagnb_NO


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