Convert C++ code to C# (blowfish & base64 logic)

I have the Visual Studio 2005 source code for a C++ project, that compiles to a command line utility to encrypt and decrypt short strings using a password supplied at the command line. It uses Blowfish and Base64. The source code amounts to about 80 lines in [login to view URL], 70 lines for the encrypting function, and 65 lines for the decrypting function, and a few utility functions amounting to a few tens of lines each. I want to end up with a C# functions "string tinycrypt(string plaintext, string password" ? and "string tinydecrypt(string base64encryptedsstring, password)" to encrypt and decrypt strings of the same format, that is much more efficient than calling this utility via shelling out. I am attaching the solution under detailed specifications. ## Deliverables C# utility class with tinycrypt() and tinydecrypt() functions equivalent to the C++ command line utility in the attached solution. It should use built-in base64 and blowfish functions in C#, and verified to generate the same output as the C++ program attached.