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International Workshop on Data Privacy Management

International Workshop on Quantitative Aspects in Security Assurance

International Workshop on Autonomous and Spontaneous Security

DPM 2014, QASA 2014, SETOP 2014: Data Privacy Management, Autonomous Spontaneous Security, and Security Assurance pp 47–57Cite as

Group Discounts Compatible with Buyer Privacy

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Part of the book series: Lecture Notes in Computer Science ((LNSC,volume 8872))

Abstract

We show how group discounts can be offered without forcing buyers to surrender their anonymity, as long as buyers can use their own computing devices (e.g. smartphone, tablet 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 makes group discounts compatible with buyer privacy (that is, buyer anonymity).

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Acknowledgments

Thanks go to Dr Carla Ràfols for advice on IBDT signatures. The following funding sources are acknowledged: Google (Faculty Research Award to the first author), Government of Catalonia (ICREA Acadèmia Prize to the first author and grant 2014 SGR 537), Spanish Government (project TIN2011-27076-C03-01 “CO-PRIVACY”), European Commission (FP7 projects “DwB” and “Inter-Trust”) and Templeton World Charity Foundation (grant TWCF0095/AB60 “Co-Utility”). The authors are with the UNESCO Chair in Data Privacy. The views in this paper are the authors’ own and do not necessarily reflect the views of Google, UNESCO or the Templeton World Charity Foundation.

Author information

Authors and Affiliations

  1. Department of Computer Engineering and Mathematics, Universitat Rovira i Virgili, Av. Països Catalans 26, 43007, Tarragona, Catalonia, Spain

    Josep Domingo-Ferrer & Alberto Blanco-Justicia

Authors
  1. Josep Domingo-Ferrer
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  2. Alberto Blanco-Justicia
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Corresponding author

Correspondence to Josep Domingo-Ferrer .

Editor information

Editors and Affiliations

  1. Télécom SudParis, Evry, France

    Joaquin Garcia-Alfaro

  2. Universitat Autònoma de Barcelona, Bellaterra, Spain

    Jordi Herrera-Joancomartí

  3. Imperial College London, London, United Kingdom

    Emil Lupu

  4. Universität Passau, Passau, Germany

    Joachim Posegga

  5. University of Urbino, Urbino, Italy

    Alessandro Aldini

  6. Pisa Research Area, National Research Council - CNR, Pisa, Italy

    Fabio Martinelli

  7. Technische Universität Darmstadt, Darmstadt, Germany

    Neeraj Suri

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© 2015 Springer International Publishing Switzerland

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Domingo-Ferrer, J., Blanco-Justicia, A. (2015). Group Discounts Compatible with Buyer Privacy. In: Garcia-Alfaro, J., et al. Data Privacy Management, Autonomous Spontaneous Security, and Security Assurance. DPM QASA SETOP 2014 2014 2014. Lecture Notes in Computer Science(), vol 8872. Springer, Cham. https://doi.org/10.1007/978-3-319-17016-9_4

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  • DOI: https://doi.org/10.1007/978-3-319-17016-9_4

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-17015-2

  • Online ISBN: 978-3-319-17016-9

  • eBook Packages: Computer ScienceComputer Science (R0)

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