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idP (Identity Provider): A web-based system that can authenticate a user on behalf of another system called SP (for Service Provider).
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Among other things, The SP must be configured to specify which of these attributes should be passed to the shrine code (in the form of request headers (we are not using request attributes because that necessitates the use of AJP, which is being phased out of Tomcat).
Installation Layout
The following instructions assume that (1) you are using Tomcat as your application server, and (2) Apache and Tomcat are running on the same host.
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