On Tue, 29 Nov 2022 at 13:12, Oscar Benjamin <[email protected]> wrote: > As for point 2. the fact that sets are currently non-deterministic is > actually a relatively new thing in Python. Before hash-randomisation > set and dict order *was* deterministic but with an arbitrary order. > That was only changed because of a supposed security issue with hash > collisions. Prior to that it was well understood that determinism was > beneficial (honestly I don't understand why I have to state this point > explicitly: determinism is almost always best in our context).
To clarify: The hash collision attack is a very real one, but specific to dictionaries of string keys, since there are quite a few ways for an attacker to send a string that gets automatically parsed into such a dictionary (eg web app frameworks where the request parameters are made available as a dictionary). But since that attack surface is *so* specific, randomization of non-string hashes is unimportant. ChrisA _______________________________________________ Python-Dev mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3/lists/python-dev.python.org/ Message archived at https://mail.python.org/archives/list/[email protected]/message/PIUODXYX4ZYXHGKONYCRQKOGDYOAGDEE/ Code of Conduct: http://python.org/psf/codeofconduct/
