As mentioned by Argalatyr, DCPCrypt works with Delphi 2009 but it doesn't do RSA;
ChillKat does support RSA and AES for Delphi, but it's not free;
Sergey Kirichenko made a free Rijndael implementation that you can download here: http://rcolonel.tripod.com/dwnload/rc_rnd.zip.
The files are dated november 2000, so I don't know if it'll work directly in the newer Delphi's.
There used to be a zipfile with Delphi code for download here: http://ace.ulyssis.student.kuleuven.ac.be/~triade/GInt/bin/RSA.zip, but the developer probably finished his study and the university removed his homepage. On this chinese webpage I could see the contents of the file (search for RSA.pas on the page and click the link).
I don't know exactly what you mean with "long in the tooth" (old?), but I'd just go for Lockbox, because it provides everything you need. Except for the 2009 update, the last official changes were made in 2003. But hey, if it works it works.
