Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/41634
Title: Specifying access control policies on data streams
Authors: Carminati, B.
Ferrari, E.
Kian, L.T. 
Issue Date: 2007
Source: Carminati, B.,Ferrari, E.,Kian, L.T. (2007). Specifying access control policies on data streams. Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 4443 LNCS : 410-421. ScholarBank@NUS Repository.
Abstract: Many data stream processing systems are increasingly being used to support applications that handle sensitive information, such as credit card numbers and locations of soldiers in battleground [1,2,3,6], These data have to be protected from unauthorized accesses. However, existing access control models and mechanisms cannot be adequately adopted on data streams. In this paper, we propose a novel access control model for data streams based on the Aurora data model [2], Our access control model is role-based and has the following components. Objects to be protected are essentially views (or rather queries) over data streams. We also define two types of privileges - Read privilege for operations such as Filter, Map, BSort, and a set of aggregate privileges for operations such as Min, Max, Count, Avg and Sum. The model also allows the specification of temporal constraints either to limit access to data during a given time bound or to constraint aggregate operations over the data within a specified time window. In the paper, we present the access control model and its formal semantics. © Springer-Verlag Berlin Heidelberg 2007.
Source Title: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
URI: http://scholarbank.nus.edu.sg/handle/10635/41634
ISBN: 9783540717027
ISSN: 03029743
Appears in Collections:Staff Publications

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