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An Information-Flow Model for Privacy (Infopriv)

  • Lucas C. J. Dreyer
  • Martin S. Olivier
Part of the IFIP — The International Federation for Information Processing book series (IFIPAICT, volume 14)

Abstract

Privacy is concerned with the protection of personal information. Traditional security models (such as the Bell-LaPadula model) assume that users can be trusted and instead concentrate on the processes within the boundaries of the computer system. The InfoPriv model goes further by assuming that users (especially people) are not trustworthy. The information flow between the users should, therefore, be taken into account as well. The basic elements of InfoPriv are entities and the information flow between them. Information flow can either be positive (permitted) or negative (not permitted). It is shown how InfoPriv can be formalised by using graph theory. This formalisation includes the notion of information sanitisers (or trusted entities). InfoPriv is concluded with a discussion of its static and dynamic aspects. A Prolog prototype based on InfoPriv has been implemented and tested successfully on a variety of privacy policies.

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Copyright information

© Springer Science+Business Media New York 1999

Authors and Affiliations

  • Lucas C. J. Dreyer
  • Martin S. Olivier

There are no affiliations available

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