Hello,

I'm making a new chat program wich has some standard encryption. But now I want to give the user teh ability to create it's own encryption. This could be done with a dll or something. But now I'm thinking. I want to a much flexibility as possible, but what can I use best then? Cause an ActiveX isn't flexible cause they can't be made with for example Delphi or C++ (as far as I know). Any suggestions how this can be best done?

In other words someone else must be able to make a "standalone" program wich I will put in the data wich the user wants to send and then that program returns me the data to send, and they other way around, If I give the program some encrypted data it can decrypt?

Any suggestions?