X -TNL: An XML-based Language for Trust Negotiations

  • Authors:
  • E. Bertino;E. Ferrari;A. Squicciarini

  • Affiliations:
  • -;-;-

  • Venue:
  • POLICY '03 Proceedings of the 4th IEEE International Workshop on Policies for Distributed Systems and Networks
  • Year:
  • 2003

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Abstract

In this paper we present X -TNL, an XML-based[4] language for carrying on trust negotiations.The language provides a flexible way of qualifying theparties involved in the negotiation, which relies on a distinctionbetween credentials and declarations. Additionally,it provides an expressive XML encoding of disclosure policies,where a disclosure policy regulates the disclosureof a resource by imposing conditions on both credentialsand negotiations. The language we provide has beenespecially conceived for handling multiple and heterogeneouscredentials and it is flexible enough to expressa wide range of protection requirements. In the paper,besides describing the language in full details, we showexamples of its applicability.