Getting data from REST API and then link to Service Desk already logged in

Hi there,

our customer wants an overview page on his website for the users showing their newest tickets from Service Desk. No problem with that: first, the user enters his Service Desk login data (on the overview page, not in the Service Desk), and then we can get the tickets info via REST API using the user login.
Now the overview should deep link to the ticket’s detail page, but should not require the user to log in in Service Desk againg. Is there a possibility to question the API and simultaneously log the user in? Does this depend on the login mechanism?

Summary: With given credentials, first get infos via API and then redirect on clicked links to already logged in view of Service Desk.

I would be glad to get some infos on this.