NDLI: Social Trust in Opportunistic Networks

Content Provider	IEEE Xplore Digital Library
Author	Trifunovic, S. Legendre, F. Anastasiades, C.
Copyright Year	2010
Abstract	Opportunistic networks enable mobile users to participate in various social interactions with applications such as content distribution and micro-blogs. Because of their distributed nature, securing user interactions relies rather on trust than hard cryptography. Trust is often based on past user interactions such as in reputation systems relying on ratings. Yet, a more fundamental trust, social trust - assessing a user is genuine with honest intentions - must be established beforehand as many identities can be created easily (i.e., sybils). By leveraging the social network structure and its dynamics (conscious secure pairing and wireless contacts), we propose two complementary approaches for social trust establishment: explicit social trust and implicit social trust. Complexity, trust propagation and security issues are evaluated using real world complex graphs, synthetic mobility models and mobility traces. We show how our approach limits the maximum number of sybils independently of the network size and is more robust against manipulation attacks compared to state-of-the-art approaches such as PGP- like certification chains and distributed community detection algorithms.
Starting Page	1
Ending Page	6
File Size	174076
Page Count	6
File Format	PDF
ISBN	9781424467396
e-ISBN	9781424467396
DOI	10.1109/INFCOMW.2010.5466696
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-03-15
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Social network services Peer to peer computing Laboratories Communications Society Robustness Computer networks Cryptography Communication system security Detection algorithms Distributed computing
Content Type	Text
Resource Type	Article

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