[ovs-dev] [GIT PULL v2] Open vSwitch

Herbert Xu herbert at gondor.apana.org.au
Thu Dec 1 07:52:37 UTC 2011


On Thu, Dec 01, 2011 at 04:24:18PM +0900, Simon Horman wrote:
>
> So while I agree that optimizing the hash is a good idea.  I don't believe
> it is a bottle-neck at this point. Though I could be convinced otherwise if
> long collision chains could be constructed with relatively few flows.
> Something I had not considered until I rad your email just now.

It's not an optimisation issue, but a security one.  If you leave
a hash like this with a constant seed, an attacker would have an
infinite amount of time to find collisions.

Rehashing isn't all that difficult.

Cheers,
-- 
Email: Herbert Xu <herbert at gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt



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