Thanks to Ethea S.r.l. who commissioned Luca Minuti to write a Delphi implementation of SAML protocols/libraries and make it available Open-Source to the entire Delphi community.
The project has now been completed also for the 64-bit platform as well.
The project is available on Git-Hub at this address:
https://github.com/EtheaDev/Delphi-SAML