Title Online Advertising: Secure E-coupons
Authors Stelvio Cimato, Dipartimento di Informatica ed Applicazioni - Università degli Studi di Salerno 
Annalisa De Bonis, Dipartimento di Informatica ed Applicazioni -Università degli Studi di Salerno
Main Fields 5. cryptography
24. security
Other Main Fields
Abstract + Keywords A form of advertisement which is becoming popular on the web is based on
digital coupon ({\em e-coupon}) distribution.
E-coupons are the digital analogue of paper coupons which are used to
provide customers with incentives to buy some merchandise. Nowadays, the
potential of digital coupons has not been fully exploited on the web. This
is mostly due to the lack of an ``efficient'' protocol for e-coupon
distribution which ensures that e-coupons are released by advertisers
according to the merchant's specification and that customers use them
properly. In this paper we propose a protocol for e-coupons which satisfies
these security requirements. Our protocol is lightweight and preserves users
privacy since it does not require users' registration.