Schemes for Privately Computing Trust and Reputation

Abstract : Trust and Reputation systems in distributed environments attain widespread interest as online communities are becoming an inherent part of the daily routine of Internet users. Several models for Trust and Reputation have been suggested recently, among them the Knots model [8]. The Knots model provides a member of a community with a method to compute the reputation of other community members. Reputation in this model is subjective and tailored to the taste and choices of the computing member and those members that have similar views, i.e. the computing member's Trust-Set. A discussion on privately computing trust in the Knots model appears in [16]. The present paper extends and improves [16] by presenting three efficient and private protocols to compute trust in trust based reputation systems that use any trust-sets based model. The protocols in the paper are rigorously proved to be private against a semi-honest adversary given standard assumptions on the existence of an homomorphic, semantically secure, public key encryption system. The protocols are analyzed and compared in terms of their privacy characteristics and communication complexity.
Type de document :
Communication dans un congrès
Masakatsu Nishigaki; Audun Jøsang; Yuko Murayama; Stephen Marsh. 4th IFIP WG 11.11 International on Trust Management (TM), Jun 2010, Morioka, Japan. Springer, IFIP Advances in Information and Communication Technology, AICT-321, pp.1-16, 2010, Trust Management IV. 〈10.1007/978-3-642-13446-3_1〉
Liste complète des métadonnées

Littérature citée [32 références]  Voir  Masquer  Télécharger

https://hal.inria.fr/hal-01061315
Contributeur : Hal Ifip <>
Soumis le : vendredi 24 novembre 2017 - 16:23:24
Dernière modification le : samedi 17 février 2018 - 17:46:02

Fichier

Gal-OzGG10.pdf
Fichiers produits par l'(les) auteur(s)

Licence


Distributed under a Creative Commons Paternité 4.0 International License

Identifiants

Citation

Nurit Gal-Oz, Niv Gilboa, Ehud Gudes. Schemes for Privately Computing Trust and Reputation. Masakatsu Nishigaki; Audun Jøsang; Yuko Murayama; Stephen Marsh. 4th IFIP WG 11.11 International on Trust Management (TM), Jun 2010, Morioka, Japan. Springer, IFIP Advances in Information and Communication Technology, AICT-321, pp.1-16, 2010, Trust Management IV. 〈10.1007/978-3-642-13446-3_1〉. 〈hal-01061315〉

Partager

Métriques

Consultations de la notice

82

Téléchargements de fichiers

17