A Handy Multi-coupon System

  • Sébastien Canard
  • Aline Gouget
  • Emeline Hufschmitt
Conference paper

DOI: 10.1007/11767480_5

Part of the Lecture Notes in Computer Science book series (LNCS, volume 3989)
Cite this paper as:
Canard S., Gouget A., Hufschmitt E. (2006) A Handy Multi-coupon System. In: Zhou J., Yung M., Bao F. (eds) Applied Cryptography and Network Security. ACNS 2006. Lecture Notes in Computer Science, vol 3989. Springer, Berlin, Heidelberg

Abstract

A coupon is an electronic data that represents the right to access a service provided by a service provider (e.g. gift certificates or movie tickets). At Financial Crypto’05, a privacy-protecting multi-coupon system that allows a user to withdraw a predefined number of single coupons from the service provider has been proposed by Chen et al. In this system, every coupon has the same value which is predetermined by the system. The main drawbacks of Chen et al. proposal are that the redemption protocol of their system is inefficient, and that no formal security model is proposed. In this paper, we consequently propose a formal security model for coupon systems and design a practical multi-coupon system with new features: the quantity of single coupons in a multi-coupon is not defined by the system and the value of each coupon is chosen in a predefined set of values.

Keywords

Electronic coupons security model proof of knowledge 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Sébastien Canard
    • 1
  • Aline Gouget
    • 1
  • Emeline Hufschmitt
    • 1
  1. 1.France Telecom Research and DevelopmentCaen

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