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Erschienen in:
Introduction to Security and Privacy in Social Networks Kapitel lesen Erstes Kapitel lesen

2013 | OriginalPaper | Buchkapitel

Encryption for Peer-to-Peer Social Networks

verfasst von : Oleksandr Bodriagov, Sonja Buchegger

Erschienen in: Security and Privacy in Social Networks

Verlag: Springer New York

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Abstract

To address privacy concerns over online social networking services, several decentralized alternatives have been proposed. These peer-to-peer (P2P) online social networks do not rely on centralized storage of user data. Rather, data can be stored not only on a profile owner’s computer but almost anywhere (friends’ computers, random peers from the social network, third-party external storage, etc.). Because external storage is often untrusted or only semi-trusted, encryption plays a fundamental role in the security of P2P social networks.
Such a system needs to be efficient for use on a large scale, provide functionality for changing access rights suitable for social networks, and, most importantly, it should preserve the network’s privacy properties. That is, other than user data confidentiality, it has to protect against information leakage regarding users’ access rights and behaviors. In this paper we explore the encryption requirements for P2P social networks and propose a list of evaluation criteria that we use to compare existing approaches. We have found that none of the current P2P architectures for social networks achieve secure, efficient, 24/7 access control enforcement and data storage. They rely on trust, require constantly running servers for each user, use expensive encryption, or fail to protect the privacy of access information. In a search for solutions that better fulfill our criteria, we found that some broadcast encryption (BE) and predicate encryption (PE) schemes exhibit several desirable properties.

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Vorheriges Kapitel Recognizing Your Digital Friends
Nächstes Kapitel Crowdsourcing and Ethics
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Metadaten
Titel
Encryption for Peer-to-Peer Social Networks
verfasst von
Oleksandr Bodriagov
Sonja Buchegger
Copyright-Jahr
2013
Verlag
Springer New York
Buch
Security and Privacy in Social Networks

Print ISBN: 978-1-4614-4138-0

Electronic ISBN: 978-1-4614-4139-7

Copyright-Jahr: 2013

DOI
https://doi.org/10.1007/978-1-4614-4139-7_4