CCD Help Desk

We have a legacy app written in Delphi 5 that needs to be able to authenticate against LDAPS (port 636). Until now we've used calls either to IPWorks8 or to ActiveDS.dll (via the Jedi project) but neither of them are working with LDAPS, and with the significant age of the app (more than 15 years old) finding reliable libraries or header ports (Jedi) is difficult. Could LDAP Admin be linked into a Delphi 5 app to provide User Authentication? If not, then how could an old app like this connect securely...