I need a system that will create a key once someone buys my software/game and than it sends them a safe download link and also a unique key (can use paypal ipn if you want) and I need it so that once someone uses the key it can not be used again. (think you would have to check online to see if the key has been used). Also I need it so that people can not bypass/crack the serial key check part for my software/games. please provide me with a price quote and the amount of time you will need to do this.
The first half isn't bad, but you're going to have trouble finding someone to do the second half properly, as besides knowing your software/games well, they'd also need access to your source and build environments, on top of coding a verification scheme themselves. Keep in mind that corporations pour tens of thousands into systems like these, and there are still cracks for pretty much every piece of software out there.
creativeGenius, you don't even have to do that, most of the time; most crackers just step thorugh your binary with a debugger and completely sidestep your check.
Pretty much anything that validates the serial online, but you'd need to be connected to the internet to register, and only allow a few regs per serial. What language is your app in? I might be able to help you.
I'm using game maker right now (http://www.yoyogames.com/gamemaker/) I do not have the source to do it but you can import dll's.
Can you show me at least 1 app/game which can not be cracked/patched ? I'm 100% sure that you can't .. Please don't ask for impossible things ( if someone can make it, he's definitely a monster who will not do a job for a few bucks )
Well it wont hurt to add some type of registration for the product rather than just making it an open install heh... If anyone knows of a free/cheap software that does this please do let me know.