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The issuing of pseudonyms is an established approach for protecting the privacy of users while limiting access and preventing sybil attacks. To prevent pseudonym deanonymization through continuous observation and correlation, frequent and unlinkable pseudonym changes must be enabled. Existing approaches for realizing sybil-resistant pseudonymization and(More)
For smart traffic applications like dynamic route planning, communication between traffic participants is of high importance. Traditional approaches rely on centralized, server-based communication architectures, which raises scalability and privacy concerns. To address these problems, we proposed OverDrive, an overlay-based geocast service that is(More)
—The recent success of online social networks hints at the general interest in socio-aware, user-centric networking applications. At the same time, mobile consumer devices are becoming both more powerful and more widespread. As an implication of these trends, user-centric networking can be realized directly between the users' devices, i.e. without depending(More)
This article has been accepted for publication in a future issue of this journal, but has not been fully edited. Content may change prior to final publication. Abstract—Today's street traffic is still largely inefficient. Over-burdened roads lead to congestions, accidents and unnecessary pollution. The increasing interconnection of traffic participants into(More)
—The ability to communicate over long distances is of central importance for smart traffic applications like cooperative route planning or the discovery and reservation of charging stations for electric vehicles. Established approaches are based on centralized architectures with singular service providers. This setup leads to strong privacy concerns, as(More)
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