[Python-Dev] Changing the order of iteration over a dictionary (original) (raw)
Nick Coghlan ncoghlan at gmail.com
Fri Jan 20 12:32:04 CET 2012
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On Fri, Jan 20, 2012 at 8:49 PM, Mark Shannon <mark at hotpy.org> wrote:
So, don't be afraid to change that hash function :)
Changing it for 3.3 isn't really raising major concerns: the real concern is with changing it in maintenance and security patches for earlier releases. Security patches that may break production applications aren't desirable, since it means admins have to weigh up the risk of being affected by the security vulnerability against the risk of breakage from the patch itself.
The collision counting approach was attractive because it looked like it might offer a way out that was less likely to break deployed systems. Unfortunately, I think the point Martin raised about just opening a new (even more subtle) attack vector kills that idea dead.
Cheers, Nick.
-- Nick Coghlan | ncoghlan at gmail.com | Brisbane, Australia
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