Communications of the ACM
Homeviews: peer-to-peer middleware for personal data sharing applications
Proceedings of the 2007 ACM SIGMOD international conference on Management of data
Persona: an online social network with user-defined privacy
Proceedings of the ACM SIGCOMM 2009 conference on Data communication
Enabling social networking in ad hoc networks of mobile phones
Proceedings of the VLDB Endowment
Distributed and secure access control in P2P databases
DBSec'10 Proceedings of the 24th annual IFIP WG 11.3 working conference on Data and applications security and privacy
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To support privacy-aware management of data in social spaces, the user personal data needs to be stored at each user device, and shared only with a trusted subset of other users. To date, social spaces only have fairly limited access control capabilities, that do not protect the possibly sensitive data of the users. In this demonstration, we showcase our SPAC system, a distributed, peer-to-peer, secure and privacy-aware social space system. SPAC is equipped with: (i) an SQL-based declarative distributed query language to specify which data to share and whom to share with. Such a language guarantees the fine-grained access to the data, (ii) a fully-decentralized authorization that relies on classic cryptographic protocols to provide robust and resilient key-based encryption for access control enforcement, and (iii) an update-friendly access control mechanism, that also addresses the updates on both the network and the access control policies.