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dc.contributor.authorBusom Figueres, Núria
dc.contributor.authorPetrlic, R.
dc.contributor.authorSebé Feixas, Francesc
dc.contributor.authorSorge, C.
dc.contributor.authorValls Marsal, Magda
dc.date.accessioned2017-01-20T10:37:21Z
dc.date.issued2017
dc.identifier.issn1084-8045
dc.identifier.urihttp://hdl.handle.net/10459.1/59057
dc.description.abstractReputation systems are useful to assess the trustworthiness of potential transaction partners, but also a potential threat to privacy since rating profiles reveal users’ preferences. Anonymous reputation systems resolve this issue, but make it difficult to assess the trustworthiness of a rating. We introduce a privacy-preserving reputation system that enables anonymous ratings while making sure that only authorized users can issue ratings. In addition, ratings can be endorsed by other users. A user who has received a pre-defined number of endorsements can prove this fact, and be rewarded e.g. by receiving a “Premium member” status. The system is based on advanced cryptographic primitives such as Chaum-Pedersen blind signatures, verifiable secret sharing and oblivious transfer.ca_ES
dc.description.sponsorshipThe authors acknowledge partial support by Spanish-German Integrated Actions under the project 57049770, the Spanish Government under project MTM2013-46949-P, and by the Government of Catalonia under grant 2014FI_B2 00036.ca_ES
dc.language.isoengca_ES
dc.publisherElsevierca_ES
dc.relationMINECO/PN2013-2016/MTM2013-46949-P
dc.relation.isformatofReproducció del document publicat a https://doi.org/10.1016/j.jnca.2016.12.023ca_ES
dc.relation.ispartofJournal of Network and Computer Applications, 2017, vol. 80, p. 58–66ca_ES
dc.rights(c) Elsevier Ltd, 2016ca_ES
dc.subjectReputation systemca_ES
dc.subjectReputation managementca_ES
dc.subjectAnonymityca_ES
dc.subjectPrivacyca_ES
dc.titleA privacy-preserving reputation system with user rewardsca_ES
dc.typearticleca_ES
dc.identifier.idgrec025150
dc.type.versionpublishedVersionca_ES
dc.rights.accessRightsinfo:eu-repo/semantics/restrictedAccessca_ES
dc.identifier.doihttps://doi.org/10.1016/j.jnca.2016.12.023
dc.date.embargoEndDate2025-01-01


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