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Secure Information Brokering and Sharing in Distributed Systems


G. Siva Kumar and K. Mahesh Babu


Vol. 15  No. 11  pp. 107-111


To facilitate extensive collaborations, today’s organizations raise increasing needs for information sharing via on-demand information access. Information Brokering System (IBS) is a peer-to-peer overlay has been proposed to support information sharing among loosely federated data sources. It consists of diverse data servers and brokering components, which help client queries to locate the data servers. Peer-to-peer (P2P) systems are gaining increasing popularity as a scalable means to share data among a large number of autonomous nodes. However, many existing IBSs adopt server side access control deployment and honest assumptions on brokers, and shed little attention on privacy of data and metadata stored and exchanged with in the IBS. We study the privacy in Privacy- Preserving Information Brokering in Distributed Information Sharing through an innovative automaton segmentation scheme and query segment encryption and data management issues for processing XML data in a p2p setting, namely indexing, replication and query routing and processing. With comprehensive analysis on privacy, end-to-end performance, and scalability, the proposed system can integrate security enforcement and query routing while preserving system-wide privacy with reasonable overhead.


Information brokering, privacy, information sharing, access control.