Authors: Claudio A. Ardagna; Sabrina De Capitani di Vimercati; Sara Foresti; Stefano Paraboschi; Pierangela Samarati
Addresses: DTI Università degli Studi di Milano, 26013 Crema, Italy. ' DTI Università degli Studi di Milano, 26013 Crema, Italy. ' DTI Università degli Studi di Milano, 26013 Crema, Italy. ' DIIMM Università degli Studi di Bergamo, 24044 Dalmine, Italy. ' DTI Università degli Studi di Milano, 26013 Crema, Italy
Abstract: The advancements in ICT allow people to use and access resources and services on the web anywhere and anytime. Servers offering resources typically require users to release information about them, which is then used to enforce possible access policies on the offered services. Effective access to such resources requires the development of approaches for enabling the user to organise and manage all her credentials and regulate their release when interacting with other parties over the web. In this paper, we provide a means for the user to specify how much she values the release of different properties, credentials, or combinations thereof as well as additional constraints that she might impose on information disclosure. Exploiting a graph modelling of the problem, the user can determine the credentials and properties to disclose to satisfy a server request while minimising the sensitivity of the information disclosed. We develop a heuristic approach that shows execution times compatible with the requirements of interactive access to web resources.
Keywords: privacy; user credentials; minimal disclosure; portfolio management; client information; information disclosure; graph modelling; security; web resources; web access.
International Journal of Information Privacy, Security and Integrity, 2012 Vol.1 No.2/3, pp.205 - 233
Available online: 21 Mar 2012 *Full-text access for editors Access for subscribers Purchase this article Comment on this article