Tree Automata for Schema-level Filtering of XML Associations

Csilla Farkas



In this paper we present query filtering techniques based on bottom-up tree automata for XML access control. In our authorization model (RXACL), RDF statements are used to represent security objects and to express the security policy. Our model allows to express and enforce access control on XML trees and their associations. We propose a query-filtering technique that evaluate XML queries to detect disclosure of association-level security objects. A query Q discloses a security object o iff the (tree) automata corresponding to o accepts Q. We show that our schema-level method detects all possible disclosures, i.e., it is complete.


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Paper Citation

in Harvard Style

Farkas C. (2005). Tree Automata for Schema-level Filtering of XML Associations . In Proceedings of the 3rd International Workshop on Security in Information Systems - Volume 1: WOSIS, (ICEIS 2005) ISBN 972-8865-25-2, pages 298-308. DOI: 10.5220/0002575502980308

in Bibtex Style

author={Csilla Farkas},
title={Tree Automata for Schema-level Filtering of XML Associations},
booktitle={Proceedings of the 3rd International Workshop on Security in Information Systems - Volume 1: WOSIS, (ICEIS 2005)},

in EndNote Style

JO - Proceedings of the 3rd International Workshop on Security in Information Systems - Volume 1: WOSIS, (ICEIS 2005)
TI - Tree Automata for Schema-level Filtering of XML Associations
SN - 972-8865-25-2
AU - Farkas C.
PY - 2005
SP - 298
EP - 308
DO - 10.5220/0002575502980308