inria-00492201, version 1
Computing in Social Networks
N° RR-7295 (2010)
- a – École Polytechnique Fédérale de Lausanne
- b – Université de Rennes I
- c – INRIA
- 1 :
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http://lpd.epfl.ch/site/
École Polytechnique Fédérale de Lausanne Ecole Polytechnique Fédérale de Lausanne EPFL IC LPD Bat INR 326 Station 14 1015 Lausanne Suisse - 2 :
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http://www.epfl.ch/
École Polytechnique Fédérale de Lausanne Swiss Federal Institute of Technology EPFL-FSTI IEL-LTS2, Station 11 Lausanne 1015 - Switzerland Suisse - 3 :
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http://www.inria.fr/equipes/asap
CNRS : UMR6074 – INRIA – Institut National des Sciences Appliquées (INSA) - Rennes – Université de Rennes 1 Campus de Beaulieu 35042 Rennes cedex France
Références bibliographiques
- Type de publication : Rapports
- Domaine : Informatique/Calcul parallèle, distribué et partagé
- Titre : Computing in Social Networks
- Résumé : This paper defines the problem of Scalable Secure Computing in a Social network: we call it the S3 problem. In short, nodes, directly reflecting on associated users, need to compute a function f : V -> U of their inputs in a scalable and secure way. Scalability means that the message and computational complexity of the distributed computation is at most O(sqrt(n) · polylog n), which forbids asymmetric cryptography. Security encompasses (1) accuracy and (2) privacy: accuracy holds when the distance from the output to the ideal result is negligible with respect to the maximum distance between any two possible results; privacy is characterized by how the information disclosed by the computation helps faulty nodes infer inputs of non-faulty nodes. We present AG-S3, a protocol that S3-computes a class of aggregation functions, that is that can be expressed as a commutative monoid operation on U: f(x1, . . . , xn) = x1\oplus ...\oplus xn, assuming the number of faulty participants is at most sqrt(n) / log^2(n). Key to our protocol is a dedicated overlay structure that enables secret sharing and distributed verifications which leverage the social aspect of the network: nodes care about their reputation and do not want to be tagged as misbehaving.
- Langue du document : Anglais
- Type de rapport : Rapport de recherche
- Nombre de pages : 12
- Date de publication : 05/2010
- Mots-clés : Social networks – Privacy – Scalability – Security – Accountability
- Référence interne : RR-7295
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RR-7295.pdf |
- inria-00492201, version 1
- http://hal.inria.fr/inria-00492201
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- Soumis le : Mardi 6 Juillet 2010, 17:29:22
- Dernière modification le : Mardi 6 Juillet 2010, 17:29:22







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