Static analysis of xml security views and query rewriting

Benoit Groz (1) , Slawomir Staworko (2) , Anne-Cécile Caron (3) , Yves Roos (3) , Sophie Tison (2)

1 Department of Computer Science [Haifa]
2 LINKS - Linking Dynamic Data
3 LIFL - Laboratoire d'Informatique Fondamentale de Lille

In this paper, we revisit the view based security framework for XML without imposing any of the previously considered restrictions on the class of queries, the class of DTDs, and the type of annotations used to define the view. First, we study {\em query rewriting} with views when the classes used to define queries and views are Regular XPath and MSO. Next, we investigate problems of {\em static analysis} of security access specifications (SAS): we introduce the novel class of \emph{interval-bounded} SAS and we define three different manners to compare views (i.e. queries), with a security point of view. We provide a systematic study of the complexity for deciding these three comparisons, when the depth of the XML documents is bounded, when the document may have an arbitrary depth but the queries defining the views are restricted to guarantee the interval-bounded property, and in the general setting without restriction on queries and document.

Mots clés: XML; Security views; Query rewriting; Determinacy

Domaines: Théorie et langage formel [cs.FL]; Base de données [cs.DB]

Benoit Groz, Slawomir Staworko, Anne-Cécile Caron, Yves Roos, Sophie Tison. Static analysis of xml security views and query rewriting. Information and Computation, 2014, 238, pp.2-29. ⟨10.1016/j.ic.2014.07.003⟩. ⟨hal-00796297⟩