Publication:
Inonymous: anonymous invitation-based system

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Publication Date

2017

Language

English

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Conference proceeding

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Abstract

In invitation-based systems, a user is allowed to join upon receipt of a certain number of invitations from the existing members. The system administrator approves the new membership if he authenticates the inviters and the invitations, knowing who is invited by whom. However, the inviter-invitee relationship is privacy-sensitive information and can be exploited for inference attacks: The invitee's profile (e.g., political view or location) might leak through the inviters' profiles. To cope with this problem, we propose Inonymous, an anonymous invitationbased system where the administrator and the existing members do not know who is invited by whom. We formally define and prove the inviter anonymity against honest but curious adversaries and the information theoretic unforgeability of invitations. Inonymous is efficiently scalable in the sense that once a user joins the system, he can immediately act as an inviter, without re-keying and imposing overhead on the existing members. We also present InonymouX, an anonymous cross-network invitation-based system where users join one network (e.g., Twitter) using invitations of members of another network (e.g., Facebook).

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Data Privacy Management, Cryptocurrencies and Blockchain Technology

Publisher:

Springer International Publishing Ag

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Computer Science, Telecommunications

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