Privacy-Preserving Group Discounts

Please use this identifier to cite or link to this item: http://hdl.handle.net/10045/40398
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Title: Privacy-Preserving Group Discounts
Authors: Domingo Ferrer, Josep | Blanco Justicia, Alberto
Keywords: Buyer privacy | Group discounts | Cryptographic protocols | Digital signatures
Knowledge Area: Ciencia de la Computación e Inteligencia Artificial
Issue Date: Sep-2014
Publisher: Universidad de Alicante
Citation: Actas de la XIII Reunión Española sobre Criptología y Seguridad de la Información : celebrado del 5 al 8 de septiembre 2014, Alicante, pp. 69-73
Abstract: How can a buyer legitimately benefit from group discounts while preserving his privacy? We show how this can be achieved when buyers can use their own computing device (e.g. smartphone or computer) to perform a purchase. Specifically, we present a protocol for privacy-preserving group discounts. The protocol allows a group of buyers to prove how many they are without disclosing their identities. Coupled with an anonymous payment system, this allows group discounts to be compatible with buyer privacy.
Sponsor: This work was partly funded by Google through a Faculty Research Award to the first author, who is also partially supported by the Government of Catalonia through an ICREA Acadèmia Prize. The following partial supports are also gratefully acknowledged: the Spanish Government under projects TIN2011-27076-C03-01 “CO-PRIVACY” and CONSOLIDER INGENIO 2010 CSD2007-00004 “ARES”, and the European Commission under FP7 projects “DwB” and “Inter-Trust”.
URI: http://hdl.handle.net/10045/40398
ISBN: 978-84-9717-323-0
Language: eng
Type: info:eu-repo/semantics/conferenceObject
Peer Review: si
Appears in Collections:Congresos - RECSI 2014 - Comunicaciones

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