[issue13703] Hash collision security issue

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

> Really? I'd expect the difference to be more than 2 nines. The randomized
> hashing has two problems: (a) change in dict order; (b) hash varies between
> processes.

Personally I don't think the change in dict order is a problem (hashing
already changes between 32-bit and 64-bit builds, and we sometimes
change the calculation too: it might change *more* often with random
hashes, while it went unnoticed in some cases before). So only (b) is a
problem and I don't think it affects more than 0.01% of
applications/users :)

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