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Unlinkability support in a decentralised, multiple-identity social network

: Thiel, Simon; Hermann, Fabian; Heupel, Marcel; Bourimi, Mohamed

Hühnlein, Detlef (Ed.); Roßnagel, Heiko (Ed.) ; Gesellschaft für Informatik -GI-, Bonn:
Open Identity Summit 2013 : 10.-11.09.2013, Kloster Banz, Germany
Bonn: Gesellschaft für Informatik, 2013 (GI-Edition : lecture notes in informatics - proceedings 223)
ISBN: 978-3-88579-617-6
Open Identity Summit <2013, Bad Staffelstein>
European Commission EC
Integrated Userware for the Intelligent, Intuitive, and Trust-Enhancing Management of the User’s Personal Information Sphere in Digital and Social Environments
Fraunhofer IAO ()

Providing support for unlinkability in a decentralized, multiple-identity social network is a complex task, which requires concepts and solutions on the technical as well as on the user-interface level. Reflecting these diverse levels of an application, this paper presents three scenarios to impede the linkability of multiple identities in decentralized social networking. Solutions cover a communication infrastructure which allows referencing to multiple identities; analysis of user content and sharing history to present linkability warnings; and user interface means allow for a privacy-ensuring management of partial identities. The userware research prototype of the EU FP7 funded ( introduced to show the integration of the solutions accordingly.