Question by Mehrdad995 · Dec 17, 2017 at 01:22 PM · online saveload clouddata

online player save backup on android

Hi community,
I've managed to serialize player data, save and load it back when needed, but locally.
what I'm looking for is to be able to upload this serialized encrypted binary data to a server and then get it back when needed but there is a problem.
if any player by any chance be able to download other's save data, then he can continue from where they have left the game and it's considered a cheating in games. I can lock the save data to players device by its ID but then he cant be able to have his save data back on his new/other devices. so the only way seems rational to me is to lock the file to the current email signed in his phone or use some authentications to ensure he is the owner of that save file.
i'm not here to ask for codes (which also is appreciated) but just ideas.
what do you guys recomend for such approaches?
is there any easer method on doing this?
please note that I don't want to use google game services cloud backup system for some reasons

thanks in advance ^_^

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