Hiding the contents of a DLL file

Hello!

I have made a dll that decrypts files. The private Key is hard coded (for example string key = "1234ABC")

When I open the dll in Notepad, the key is easily seeen. There goes my key!!

What can be done to prevent such situations.


Note that the key has to be a string.

Look in the System.Security.Cryptography namespace.

Hope this points you in the right direction. :D