I am developing a small in-house web application which will be soon running from google cloud platform. I am wondering if there is any Spring way to use the same gcp user credentials to login my application on cloud/premises too. In order to use high security and manage user who can login on system ? After verifying authorization of user using gcp api user are allowed to navigate menus ? Already firebase using same gcp credentials for accessing the collection.

I don’t want to create a duplicate database for same users who already in GCP with credentials.