Controlled Information Sharing in Collaborative Distributed Query Processing

We present a simple, yet powerful, approach for the specification and enforcement of authorizations regulating data release among data holders collaborating in a distributed computation, to ensure that query processing discloses only data whose release has been explicitly authorized. Data disclosure is captured by means of profiles, associated with each data computation, that describe the information carried by the result. We also present an algorithm that, given a query plan, determines whether it can be safely executed and produces a safe execution strategy. The main advantage of our approach is its simplicity that, without impacting expressiveness, makes it nicely interoperable with current solutions for collaborative computations in distributed database systems.

• Type: Conference
• Year: 2008
• Where: ICDCS
• Authors: Sabrina De Capitani di Vimercati, Sara Foresti, Sushil Jajodia, Stefano Paraboschi, Pierangela Samarati
• Keywords: Authorizations Regulating Data, Data Computation, Data Holders, Distributed And Parallel Computing, ICDCS 2008