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World Wide Web

, Volume 3, Issue 3, pp 139–151 | Cite as

Specifying and enforcing access control policies for XML document sources

  • Elisa Bertino
  • Silvana Castano
  • Elena Ferrari
  • Marco Mesiti
Article

Abstract

The Web is becoming the main information dissemination means in private and public organizations. As a consequence, several applications at both internet and intranet level need mechanisms to support a selective access to data available over the Web. In this context, developing an access control model, and related mechanisms, in terms of XML (eXtensible Markup Language) is an important step, because XML is increasingly used as the language for representing information exchanged over the Web. In this paper, we propose access control policies and an associated model for XML documents, addressing peculiar protection requirements posed by XML. A first requirement is that varying protection granularity levels should be supported to guarantee a differentiated protection of document contents. A second requirement arises from the fact that XML documents do not always conform to a predefined document type. To cope with these requirements, the proposed model supports varying protection granularity levels, ranging from a set of documents, to a single document or specific document portion(s). Moreover, it allows the Security Administrator to choose different policies for documents not covered or only partially covered by the existing access control policies for document types. An access control mechanism for the enforcement of the proposed model is finally described.

Keywords

Access Control Access Control Policy Access Control Model Access Request Access Control Mechanism 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 2000

Authors and Affiliations

  • Elisa Bertino
    • 1
  • Silvana Castano
    • 1
  • Elena Ferrari
    • 1
  • Marco Mesiti
    • 2
  1. 1.Dipartimento di Scienze dell'InformazioneUniversità degli Studi di MilanoMilanoItaly
  2. 2.Dipartimento di Informatica e Scienze dell'InformazioneUniversità degli Studi di GenovaGenovaItaly

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