Longitude: Centralized Privacy-Preserving Computation of Users' Proximity

  title={Longitude: Centralized Privacy-Preserving Computation of Users' Proximity},
  author={Sergio Mascetti and Claudio Bettini and Dario Freni},
  booktitle={Secure Data Management},
A “friend finder” is a Location Based Service (LBS) that informs users about the presence of participants in a geographical area. In particular, one of the functionalities of this kind of application, reveals the users that are in proximity. Several implementations of the friend finder service already exist but, to the best of our knowledge, none of them provides a satisfactory technique to protect users’ privacy. While several techniques have been proposed to protect users’ privacy for other… CONTINUE READING
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