Privacy Homomorphisms for Social Networks with Private Relationships

Provided by: Elsevier
Topic: Networking
Format: PDF
Enabling private relationships in social networks is an important issue recently raised in the literature. The authors describe in this paper a new protocol which offers private relationships allowing resource access through indirect relationships without requiring a mediating trusted third party (although an optimistic trusted third party is used which only acts in case of conflict). Thanks to homomorphic encryption, their scheme prevents the resource owner from learning the relationships and trust levels between the users who collaborate in the resource access.

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