title: How can I provide additional user's data on login (CAS)
body: <p>Is it possible to provide additional user’s data (like email) to clients?</p>
  <p>My CAS server gets full about user from its data source. After client application logged in I have only user name. How can I transfer user’s info from CAS server app to CAS client app?</p>
  <p>Suppose I can implement RESTful service that will be called after login by CAS client app but how can I secure it?</p>