Arias Cabarcos, PatriciaAlmenares Mendoza, FlorinaMarín López, AndrésDíaz Sánchez, Daniel2012-09-172012-09-172009-08-31Jozef Wozniak et al. (eds.), Wireless and Mobile Networking: Second IFIP WG 6.8 Joint Conference, WMNC 2009, Gdansk (Poland), September 9-11 (pp. 173-184). Proceedings. Boston: Springer, 2009978-3-642-03840-23-642-03840-91868-4238 (Print)1868-422X (Online)http://hdl.handle.net/10016/15358Proceedings of: The Second IFIP WG 6.8 Joint Conference, WMNC 2009, Gdansk, Poland, September 9-11, 2009Federation in identity management has emerged as a key concept for reducing complexity in the companies and offering an improved user experience when accessing services. In this sense, the process of trust establishment is fundamental to allow rapid and seamless interaction between different trust domains. However, the problem of establishing identity federations in dynamic and open environments that form part of Next Generation Networks (NGNs), where it is desirable to speed up the processes of service provisioning and deprovisioning, has not been fully addressed. This paper analyzes the underlying trust mechanisms of the existing frameworks for federated identity management and its suitability to be applied in the mentioned environments. This analysis is mainly focused on the Single Sign On (SSO) profile. We propose a generic extension for the SAML standard in order to facilitate the creation of federation relationships in a dynamic way between prior unknown parties. Finally, we give some details of implementation and compatibility issues.application/pdfengSAMLFederationIdentity managementconference paperTelecomunicaciones10.1007/978-3-642-03841-9open access