This cross-platform toolkit supports Windows and Linux X11 applications (and possibly other Unix X11 environments as well). It contains components and routines for Delphi, Kylix and C++Builder that support data encryption. Algorithms supported include Blowfish, RSA, MD5, SHA-1, DES, triple-DES, Rijndael AES (Advanced Encryption Standard), etc. It also provides support for digitally signing messages with the standard Digital Signature Algorithm (DSA). LockBox is open source.
TurboPower Abbrevia Lock Box