How it works

 

An authentication infrastructure and federated authorization consists of two main elements: the identity providers, responsible for maintaining information about users and their authentication; and service providers, which offer access to a resource or service. The interaction between the two is a trust, because one must believe in the quality of data provided by the other, to ensure that these are used only for the combined purposes.

When you access a particular service provider, the user is redirected to a page that shows you a list of identity providers. He chooses then their home institution and your browser is redirected to the identity provider that institution. After authenticating the user, the identity provider passes on the result of this authentication service provider and creates a usage session associated with the user, so that access to new services within a specified time interval do not generate new authentication requests. 

 

 

 
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