NDLI: Navigating in Webs of Trust: Finding Short Trust Chains in Unstructured Networks without Global Knowledge

Content Provider	IEEE Xplore Digital Library
Author	Busser, J.-U. Fries, S. Otto, M. Hartmann, P.
Copyright Year	2008
Description	Author affiliation: Corp. Technol., Siemens AG, Berlin (Busser, J.-U.; Fries, S.; Otto, M.)
Abstract	Authentication of participants is fundamental for secure communication systems. Many traditional systems rely on central components (like certification authorities). These have to be powerful and well-protected, making them expensive, and require trust in a central authority. Conventional decentralized solutions based on local trust between participants only (like PGP) are cheaper but either must be supported by central components, or they are prone to e.g. Sybil attacks. We present a decentralized solution without any trusted central components for finding paths of trust between arbitrary participants in an unstructured network: In an initialization phase a hierarchical overlay structure is constructed, providing each participant with certificate chains to predefined reference nodes. These certificate chains can be used later to find short trust chains between nodes. Monte-Carlo simulations clearly demonstrate the feasibility and efficiency of our approach for social networks. Further features like merging of networks, limited trust relationships between participants and revocation of trust can be integrated easily.
Starting Page	335
Ending Page	343
File Size	478630
Page Count	9
File Format	PDF
ISBN	9780769531021
DOI	10.1109/ARES.2008.117
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-03-04
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Availability Navigation personal communication networks identification of persons Humans Security Certification communication system security public key cryptography Public key Authentication Public key cryptography Telecommunication network reliability Protection
Content Type	Text
Resource Type	Article

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