Topology of dynamic metadata exchange via a trusted third party

Abstract

Federated Identity Management is an effective technology that allows multiple organizations to share resources. Deployments of the protocol Security Assertion Markup Language (SAML) practically require the pre-exchange of aggregated metadata files, making federations to fixed trust boundaries. Dynamic metadata exchange between identity provider and service provider via a trusted third party (TTP) overcomes these barriers. In this paper, we contrast dynamic metadata exchange with other state-of-the-art approaches and present the topology of the dynamic metadata exchange via a TTP. Furthermore, a distributed dynamic metadata exchange is proposed, in order to enhance the current protocol and provide a scalable solution for large-scale infrastructures.