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Event Invitations in Privacy-Preserving DOSNs: Formalization and Protocol Design
KTH, School of Computer Science and Communication (CSC), Theoretical Computer Science, TCS.ORCID iD: 0000-0003-1025-826X
KTH, School of Computer Science and Communication (CSC), Theoretical Computer Science, TCS.ORCID iD: 0000-0002-7102-8153
KTH, School of Computer Science and Communication (CSC), Theoretical Computer Science, TCS.ORCID iD: 0000-0001-5742-5462
2015 (English)In: Privacy and Identity Management for the Future Internet in the Age of Globalisation: 9th IFIP WG 9.2, 9.5, 9.6/11.7, 11.4, 11.6/SIG 9.2.2 International Summer School, Patras, Greece, September 7-12, 2014, Revised Selected Papers / [ed] Camenisch, Jan; Fischer-Hübner, Simone; Hansen, Marit, Springer Publishing Company, 2015, Vol. 457, 185-200 p.Chapter in book (Refereed)
Abstract [en]

Online Social Networks (OSNs) have an infamous history of privacy and security issues. One approach to avoid the massive collection of sensitive data of all users at a central point is a decentralized architecture.

An event invitation feature - allowing a user to create an event and invite other users who then can confirm their attendance - is part of the standard functionality of OSNs. We formalize security and privacy properties of such a feature like allowing different types of information related to the event (e.g., how many people are invited/attending, who is invited/attending) to be shared with different groups of users (e.g., only invited/attending users).

Implementing this feature in a Privacy-Preserving Decentralized Online Decentralized Online is non-trivial because there is no fully trusted broker to guarantee fairness to all parties involved. We propose a secure decentralized protocol for implementing this feature, using tools such as storage location indirection, ciphertext inferences and a disclose-secret-if-committed mechanism, derived from standard cryptographic primitives.

The results can be applied in the context of Privacy-Preserving DOSNs, but might also be useful in other domains that need mechanisms for cooperation and coordination, e.g., Collaborative Working Environment and the corresponding collaborative-specific tools, i.e., groupware, or Computer-Supported Collaborative Learning.

Place, publisher, year, edition, pages
Springer Publishing Company, 2015. Vol. 457, 185-200 p.
, IFIP Advances in Information and Communication Technology, ISSN 1868-4238 ; 457
Keyword [en]
Event invitation, Privacy, Decentralized Online Social Networks
National Category
Computer Systems Telecommunications
Research subject
Computer Science
URN: urn:nbn:se:kth:diva-166775DOI: 10.1007/978-3-319-18621-4_13ISI: 000380771600013ScopusID: 2-s2.0-84942575280ISBN: 978-3-319-18620-7ISBN: 978-3-319-18621-4OAI: diva2:812209
Swedish Foundation for Strategic Research , FFL09-0086Swedish Research Council, 2009-3793

QC 20150618

Available from: 2015-05-18 Created: 2015-05-18 Last updated: 2016-09-20Bibliographically approved

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Rodríguez-Cano, GuillermoGreschbach, BenjaminBuchegger, Sonja
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