Save data to disk safely

Hi, what is the safest way to save a game data file on disk with NWjs ?.

I need to avoid that the user can identify the data and edit them in his favor.

It's simple, because the user could unlock levels and other things.

I mean to write the file on the hard drive.

You can use CB Hash or similar plugin to digitally "sign" your save data. Save it together with the hash, on load check if the hash is correct.

This will make the simple editing of the save file impossible, but won't protect from a more experienced hacker.

You can use CB Hash or similar plugin to digitally "sign" your save data. Save it together with the hash, on load check if the hash is correct.

This will make the simple editing of the save file impossible, but won't protect from a more experienced hacker.

Thanks, I think that should help me.