VFP Trial Software More Secure
Posted on 2012-09-16
Hi all. I really need the help of some experts here.
I've been working off and on for nearly a week on a project that will require a user trial period followed by an optional registration.
I thought I had most everything worked out, with an added layer of security even.
Besides writing certain keys to the registry encoded, I also created a file in a 'secret' location on the users hard drive so that I could double check a few things.
First, how would I know if the user just went into the registry and deleted all the keys my software entered? I wouldn't. The file allows me to verify what might have been deleted from the registry, and vice-versa.
However, I just read a post that says under Windows Vista and above, you cannot write outside of the directory for the program that is being installed. In some cases even with admin privileges. So this will not work.
So then how do I stop a user from simply deleting my registry keys, which will in effect make the trial period start over again??