Access to Identity-Enabled Web Services in Cross-Border, Inter-Federation Scenarios (June 2007)

This technical whitepaper describes the different potential options to access identity-based web services in Inter-federation (Inter-CoT ) scenarios; i.e., when there is no business relationship between the service requestor and the service provider AND such relationship can not be inherited from a commonly-trusted third party, such as in typical federation cases – Intra-CoT. Even if there is such lack of direct business relationship, final interoperability is still possible by (indirect) inheritance of the trust relationship existing among the entities operating the different CoTs. The solutions proposed in this whitepaper are especially interesting in certain scenarios, such as those associated with roaming situations in the telecommunications industry. They can also be applicable to other industries such as the eHealth or eGovernment sectors.

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