Delphi Cryptography Package DCPcrypt is an open source library of cryptographic components (encryption algorithms and hash algorithms) for Borland Delphi and Kylix (it also works under some versions of C++ Builder). I haven't been able to update it for quite a long time now but it still works quite happily with Delphi 4, 5, 6, 7 and 2005 and Kylix 1 and 2 (it might work under Kylix 3, but I don't