1. Coprivacy : an introduction to the theory and applications of co-operative privacy
- Author
-
Josep Domingo-Ferrer
- Subjects
TheoryofComputation_MISCELLANEOUS ,Information theory ,94 Information And Communication, Circuits::94A Communication, information [Classificació AMS] ,Matemàtiques i estadística [Àrees temàtiques de la UPC] ,TheoryofComputation_GENERAL ,Codificació, Teoria de la ,91 Game theory, economics, social and behavioral sciences::91A Game theory [Classificació AMS] ,Computer science ,Content distribution ,Content privacy in social ,Content privacy in social networks ,68 Computer science::68P Theory of data [Classificació AMS] ,Informàtica ,Informació, Teoria de la ,Coding theory ,Jocs, Teoria de ,Networks ,Data privacy ,Vehicular networks ,Game theory ,Digital oblivion ,Anonymous keyword search - Abstract
We introduce the novel concept of coprivacy or co-operative privacy to make privacy preservation attractive. A protocol is coprivate if the best option for a player to preserve her privacy is to help another player in preserving his privacy. Coprivacy makes an individual’s privacy preservation a goal that rationally interests other individuals: it is a matter of helping oneself by helping someone else. We formally define coprivacy in terms of Nash equilibria. We then extend the concept to: i) general coprivacy, where a helping player’s utility (i.e. interest) may include earning functionality and security in addition to privacy; ii) mixed coprivacy, where mixed strategies and mixed Nash equilibria are allowed with some restrictions; iii) correlated coprivacy, in which Nash equilibria are replaced by correlated equilibria. Coprivacy can be applied to any peer-to-peer (P2P) protocol. We illustrate coprivacy in P2P anonymous keyword search, in content privacy in social networks, in vehicular network communications and in controlled content distribution and digital oblivion enforcement
- Published
- 2011