I didn't know the answer, but I was interested so I googled it: https://unix.stackexchange.com/questions/170652/is-it-possible-to-add-error-correction-codes-bc

I didn't know the answer, but I was interested so I googled it: https://unix.stackexchange.com/questions/170652/is-it-possible-to-add-error-correction-codes-bch-rs-or-etc-to-a-single-file https://unix.stackexchange.com/questions/170652/is-it-possib... Basically, you want the tool "par2".