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Efficient oblivious augmented maps: Location-based services with a payment broker
Norsk Regnesentral.
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2007 (English)In: PRIVACY ENHANCING TECHNOLOGIES, Katholieke Univ Leuven, ESAT, COSIC, B-3001 Louvain, Belgium., 2007, 77-94 p.Conference paper (Refereed)
Abstract [en]

Secure processing of location data in location-based services (LBS) can be implemented with cryptographic protocols. We propose a protocol based on oblivious transfer and homomorphic encryption. Its properties are the avoidance of personal information on the services side, and a fair revenue distribution scheme. We discuss this in contrast to other LBS solutions that seek to anonymize information as well as possible towards the services. For this purpose, we introduce a proxy party. The proxy interacts with multiple services and collects money from subscribing users. Later on, the proxy distributes the collected payment to the services based on the number of subscriptions to each service. Neither the proxy nor the services learn the exact relation between users and the services they are subscribed to.

Place, publisher, year, edition, pages
Katholieke Univ Leuven, ESAT, COSIC, B-3001 Louvain, Belgium., 2007. 77-94 p.
National Category
Computer Science
URN: urn:nbn:se:kau:diva-46651ISI: 000251390900006ISBN: 978-3-540-75550-0 (print)OAI: diva2:1037173
7th International Symposium on Privacy Enhancing Technologies (PET 2007), JUN 20-22, 2007, Ottawa, CANADA
Available from: 2016-10-14 Created: 2016-10-13 Last updated: 2016-10-14

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Fritsch, Lothar
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