Bridging between SAML-Based Payment and Other Identity Federation Payment Systems

Identity Federations are increasingly being used to establish convenient and secure attribute-based authentication and authorization systems. During the last few years, a third aspect has become important within these federations: i.e., payment. Thus, several payment approaches have been designed and used in Identity Federations. However, when more than one federation is being combined into an inter-federation association, federation bridges have to be established to translate messages between the participating federations. Whilst the problem of bridging identity information between federations has already been considered in many research activities, the problem of how to bridge payment data still remains unsolved. Therefore, this paper presents a solution to bridge between a SAML-based payment enabled Identity Federation and four other kinds of payment solutions used by Identity Federations.