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DECENT: A decentralized architecture for enforcing privacy in online social networks

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5 Author(s)
Jahid, S. ; University of Illinois at Urbana-Champaign, Urbana-Champaign, IL, USA ; Nilizadeh, S. ; Mittal, P. ; Borisov, N.
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A multitude of privacy breaches, both accidental and malicious, have prompted users to distrust centralized providers of online social networks (OSNs) and investigate decentralized solutions. We examine the design of a fully decentralized (peer-to-peer) OSN, with a special focus on privacy and security. In particular, we wish to protect the confidentiality, integrity, and availability of user content and the privacy of user relationships. We propose DECENT, an architecture for OSNs that uses a distributed hash table to store user data, and features cryptographic protections for confidentiality and integrity, as well as support for flexible attribute policies and fast revocation. DECENT ensures that neither data nor social relationships are visible to unauthorized users and provides availability through replication and authentication of updates. We evaluate DECENT through simulation and experiments on the PlanetLab network and show that DECENT is able to replicate the main functionality of current centralized OSNs with manageable overhead.

Published in:

Pervasive Computing and Communications Workshops (PERCOM Workshops), 2012 IEEE International Conference on

Date of Conference:

19-23 March 2012

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