The Federated Systems and Data Authentication service is a Identity and Authorisation Management (IAM) system which arbitrates authenticated access to registered services, which are provided by the Federated Systems and Data division in the Juelich Supercomputing Centre. The role of the FSD Authentication service is to allow these services to make authentication and the authorisation decisions, and to perform any other processing required, when the end user accesses these services. When connecting to a registered service that requires a login (eventually with further attributes) the access request is redirected to the FSD Authentication instance (https://unity-jsc.fz-juelich.de/home) and the user can effectively login by using his/her primary credential.
FSD Authentication may use and store the Attributes provided by the IdP. The FSD Authentication Service Provider makes sure that the end user’s attributes are only forwarded to lower-level Service Providers which the end user wants to access.