From another comment: https://research.swtch.com/qart https://research.swtch.com/qart Looks like this is definitely possible, the results aren't as clean as y

From another comment: https://research.swtch.com/qart https://research.swtch.com/qart Looks like this is definitely possible, the results aren't as clean as you might hope though. Maybe they could be improved by introducing some intentional errors (which were explicitly avoided here).