Step #4: Test results

Date of expiration

Let’s create one more serial number and set it to expire in the 2005 year. This is a date from the past, so licensing module should not accept the serial number. Let’s check this. Go to the “Licenses” tab, click the “Add License” button and check the “Expiration date” box, then enter “September 30, 2005″ there. Then click the “OK” button and put the generated serial number to the “serial.txt” file. Finally, run the application:

C:\test>dummy_app.vmp.exe
serial number is bad
state = SERIAL_STATE_FLAG_DATE_EXPIRED

The licensing module returned “serial number is expired” code. Replace the number in the “serial.txt” file with the old one and check that it is accepted as before.

C:\test>dummy_app.vmp.exe
serial number is correct, calling foo()
I'm foo
done

Blocking a serial number

Imagine that our “good” serial number was stolen and available on the Internet. We have to block it, so it will not work in the next versions of the application. We should locate it in the list of serial numbers and click “Block Serial Number” button in the right pane. However, if we run our protected application now, it will accept the blocked serial number, because it doesn’t know that it is blocked.

C:\test>dummy_app.vmp.exe
serial number is correct, calling foo()
I'm foo
done

Make a copy of our application and name it “dummy_app1.vmp.exe”. Then switch to VMProtect and protect the application again. Run the new version:

C:\test>dummy_app.vmp.exe
serial number is bad
state = SERIAL_STATE_FLAG_BLACKLISTED

Run the old version of the application:

C:\test>dummy_app1.vmp.exe
serial number is correct, calling foo()
I'm foo
done

As said above, the old version doesn’t know about blocked serial number and accepts it. The new version blocks such serial number. In the last step we’ll try to lock code to serial number. Before doing that please generate a new serial number or unlock this one and protect the application again. It should accept serial number from the “serial.txt” file before we can continue.