[Python-Dev] Hash collision security issue (now public) (original) (raw)

Antoine Pitrou solipsis at pitrou.net
Sun Jan 1 17:10:03 CET 2012


On Sun, 01 Jan 2012 16:56:19 +0100 Christian Heimes <lists at cheimes.de> wrote:

Am 01.01.2012 05:11, schrieb Antoine Pitrou: > On Sat, 31 Dec 2011 16:56:00 -0700 > Guido van Rossum <guido at python.org> wrote: >> ISTM the only reasonable thing is to have a random seed picked very early >> in the process, to be used to change the hash() function of >> str/bytes/unicode (in a way that they are still compatible with each other). > > Do str and bytes still have to be compatible with each other in 3.x?

py3k has tests for hash("ascii") == hash(b"ascii"). Are you talking about this invariant?

Yes. It doesn't seem to have any point anymore.

Regards

Antoine.



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