Abstract
The expansion of inter-organizational scenarios based on different authorization schemes involves the development of integration solutions allowing different authorization domains to share, in some way, protected resources. This paper analyzes different emerging technologies. On the one hand, we have two XML-based standards, the SAML standard, which is being widely accepted as a language to express and exchange authorization data, and the XACML standard, which constitutes a promising framework for access control policies. On the other hand, PERMIS is a trust management system for X.509 attribute certificates and includes a powerful authorization decision engine governed by the PERMIS XML policy. This paper presents a sample scenario where domains using these technologies can be integrated allowing, for example, the use of attribute certificates in a SAML environment and the utilization of the PERMIS authorization engine to decide about the disclosure or concealment of attributes. In order to design this scenario we have based our work on a Credential Conversion Service (CCS) which is able to convert ACs into SAML attributes, and a User Attribute Manager (UAM) which controls the disclosure of credentials. These modules are governed by policies defining the conversion process (the Conversion Policy) and the disclosure of attributes (the Disclosure Policy).
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López, G., Cánovas, Ó., Gómez-Skarmeta, A.F., Otenko, S., Chadwick, D.W. (2005). A Heterogeneous Network Access Service Based on PERMIS and SAML. In: Chadwick, D., Zhao, G. (eds) Public Key Infrastructure. EuroPKI 2005. Lecture Notes in Computer Science, vol 3545. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11533733_4
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DOI: https://doi.org/10.1007/11533733_4
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-28062-0
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