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2017 | OriginalPaper | Buchkapitel

PARTS – Privacy-Aware Routing with Transportation Subgraphs

verfasst von : Christian Roth, Lukas Hartmann, Doğan Kesdoğan

Erschienen in: Secure IT Systems

Verlag: Springer International Publishing

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Abstract

To ensure privacy for route planning applications and other location based services (LBS), the service provider must be prevented from tracking a user’s path during navigation on the application level. However, the navigation functionality must be preserved. We introduce the algorithm PARTS to split route requests into route parts which will be submitted to an LBS in an unlinkable way. Equipped with the usage of dummy requests and time shifting, our approach can achieve better privacy. We will show that our algorithm protects privacy in the presence of a realistic adversary model while maintaining the service quality.

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Fußnoten
1
The straight line distance is used since it is locally computable and does not require any additional requests to a third party, thus not leaking any information.
 
2
Since our users are exclusively moving within a city, we use the simplified assumption that travel speed is constant per road segment (homogeneous flow). Hereby, we use values from 37.5 kph to 62.5 kph. The adversary only knows that people will respect traffic regulations, therefore he uses a constant value of 50 kph for the whole route.
 
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Metadaten
Titel
PARTS – Privacy-Aware Routing with Transportation Subgraphs
verfasst von
Christian Roth
Lukas Hartmann
Doğan Kesdoğan
Copyright-Jahr
2017
DOI
https://doi.org/10.1007/978-3-319-70290-2_6