11-12-2012, 01:33 PM
Your grammar is horrible sorry to say, so it's hard to understand what you want clearly, although from what I gather, you want to basically have an authentication system which decides whether the end-user gets to make use of certain features in your application. There's no easy way to achieve this with foolproof security, because there's always debuggers out there like IDA Pro and Olly. The instructions for these extra features will always be packed into the binary, and all they'd have to do is to jmp to the instruction to bypass that authentication check and they would have access to all of these secured features anyways. There's hardly much protection against the advanced reverse engineer.
Otherwise, you can Obfuscate your code to make things a bit more difficult for direct .NET dissasembly, and you can use a MySQL database for storage of users that have permission to use your extra features, and authenticate when the program starts up by some condition, or preferably use some kind of login system.
Otherwise, you can Obfuscate your code to make things a bit more difficult for direct .NET dissasembly, and you can use a MySQL database for storage of users that have permission to use your extra features, and authenticate when the program starts up by some condition, or preferably use some kind of login system.