[openssl-dev] use SIPhash for OPENSSL_LH_strhash?

[Benjamin Kaduk]

On 01/12/2017 02:19 PM, Richard Levitte wrote:
> In message <f1c135a2-ebb4-bbc0-8ac0-9e81928b40d5 at akamai.com> on Thu, 12 Jan 2017 14:07:54 -0600, Benjamin Kaduk <bkaduk at akamai.com> said:
>
> bkaduk> On 01/11/2017 08:43 AM, Richard Levitte wrote:
> bkaduk> 
> bkaduk>     A note: I have absolutely nothing against the addition of SIPhash in
> bkaduk>     our collection of hash algos.  My scepticism was only in regards to
> bkaduk>     using it as a string hasher for our hash tables indexes.
> bkaduk> 
> bkaduk> Understood. Can you further clarify whether you would like to maintain
> bkaduk> the existing 20-year-old hand-rolled hash function for that purpose or
> bkaduk> are open to using a more modern hash (not necessarily SIPhash; there
> bkaduk> are also things like the Jenkins hash to consider)?
>
> If it makes sense, yes.  I found SMhasher (*) and started playing with
> it for this very purpose.  Just for kicks, I added OPENSSL_LH_strhash_ex
> to it and am currently doing a huge run of all hashes it knows.
>
> I did a test with Google's FarmHash, and that one shows promise, speed
> wise (it performs twice as fast as OPENSSL_LH_strhash_ex).
>

Cool!  I look forward to seeing the results :)

-Ben
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