Password authentication with insecure communication
Communications of the ACM
Handbook of Applied Cryptography
Handbook of Applied Cryptography
A Research Model for Studying Privacy Concerns Pertaining to Location-Based Services
HICSS '05 Proceedings of the Proceedings of the 38th Annual Hawaii International Conference on System Sciences - Volume 07
Anonymous Usage of Location-Based Services Through Spatial and Temporal Cloaking
Proceedings of the 1st international conference on Mobile systems, applications and services
Preserving user location privacy in mobile data management infrastructures
PET'06 Proceedings of the 6th international conference on Privacy Enhancing Technologies
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Network operators gradually open their interfaces to formerly hidden services. This fosters the development of a new class of mobile applications that take into account context information such as the location of users. However, the development of location-based services also raises the issue of users location-privacy. In this paper we introduce a service architecture that aims to overcome some of the shortages of currently existing context-aware applications by applying a novel pseudonym based privacy enhancing mechanism that is based on the notion of pseudonyms. This mechanism can even be applied on legacy mobile devices with restricted memory or processing power. Due to its flexibility many different kinds of applications are conceivable. One of the most important aspects in this respect is the highly postulated pay-as-you-go model. To illustrate our approach we demonstrate a transport ticket application that is extended by location-tracking functionality.