I’ve recently released an updated version of the Delphi Encryption Compendium (DEC) compatible with Delphi versions up to 2009. A code example of using it with Unicode strings is included in the library.
This libary was updated and released with permisson of the original author Hagen Reddman who developed the versions DEC 3 and DEC 5.1.
The Delphi Encryption Compendium supports several hashes, ciphers and text encodings and is imho one of the best libraries for strong cryptography in Delphi. And the best: It is free of charge!
It is available at Torry: http://www.torry.net
Thanks to Michael Puff (a.k.a. Luckie) for hosting the library on his server!
Due to the request here are the hashes for the file DEC_v5.2.zip linked at Torry / Michael’s Server: