Journal
ACM TRANSACTIONS ON INFORMATION AND SYSTEM SECURITY
Volume 13, Issue 1, Pages -Publisher
ASSOC COMPUTING MACHINERY
DOI: 10.1145/1609956.1609962
Keywords
Design; Theory; Access control; Semantic Web; social networks
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Funding
- Italian Ministry of University, Education and Research [PRIN2007F9437X_004]
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In this article, we propose an access control mechanism for Web-based social networks, which adopts a rule-based approach for specifying access policies on the resources owned by network participants, and where authorized users are denoted in terms of the type, depth, and trust level of the relationships existing between nodes in the network. Different from traditional access control systems, our mechanism makes use of a semidecentralized architecture, where access control enforcement is carried out client-side. Access to a resource is granted when the requestor is able to demonstrate being authorized to do that by providing a proof. In the article, besides illustrating the main notions on which our access control model relies, we present all the protocols underlying our system and a performance study of the implemented prototype.
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