How to make encrypted updates of scripts and database on remote user hosting?

Question

PHP

Good afternoon. I have an idea for a service. The logic is as follows: the user downloads a certain script (say, cms), installs it on his hosting and uses it. After some time, an update of this script from the creator comes out. Is it possible to somehow start updating the user's site without the participation of the user himself or with a minimum (pressed the button, it all updated itself)? + is it possible to encrypt the script files so that only those who paid could use it?

Answer 1

is it possible to encrypt the script files so that only those who paid could use it?

https://ru.wikipedia.org/wiki/CryptoLocker