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Message-ID: <413c2ae532a525aba6c60de955e42996@smtp.hushmail.com>
Date: Fri, 24 Apr 2015 19:56:12 +0200
From: magnum <john.magnum@...hmail.com>
To: john-dev@...ts.openwall.com
Subject: Jumbo AVX2 vs. Hashcat
I thought I'd run sanity-checks of Jumbo against Hashcat v0.49 in order
to see any bad figures we should improve on. I expected HC to show
really challenging speeds (admittedly just based on oclHashcat
experience), but here are the results:
Running AVX2 with 1 or 4 threads (i7-4790, no HT):
real runs (mask mode)
Hash HCx1 HCx4 JtRx1 JtRx4 fork4
------------------------------------------------
MD4 23.93M 75.12M 69.02M 72.13M 250M
MD5 19.48M 60.95M 59.25M 53.29M* 215M (* look into this)
NT 20.55M 63.02M 66.04M 75.37M 250M
SHA1 16.83M 42.17M 36.71M 44.09M 135M
SHA256 9.22M 27.71M 19.36M 29.21M 68M
SHA512 4.11M 11.38M 8.15M 24.37M 30M
WPAPSK 1.54k 4.31k 3.25k 6.37k
DEScrypt 600.4k 2.29M N/A
Err, what the heck is this!? I haven't looked much at Hashcat ever but I
did not expect it to be this much slower than JtR. We match/beat Atom's
4x speeds using just a single thread. This can't be true, can it?
After some head scratching I thought I'd bench AVX vs. AVX too and
there's the answer - something is fundamentally wrong just with
Hashcat's AVX2. Here's a battle using just AVX:
real runs
Hash HCx1 HCx4 JtRx1 JtRx4
-----------------------------------------
MD4 22.90M 76.76M 35.45M 56.26M
MD5 18.92M 71.96M 27.38M 44.99M
NT 21.52M 64.87M 36.72M 59.53M
SHA1 17.14M 53.92M 22.63M 33.54M
SHA256 9.23M 35.22M 9.66M 28.57M
SHA512 4.12M 11.37M 3.89M* 7.59M
WPAPSK 1.53k 4.32k 1.71k 4.92k
DEScrypt 600.4k 1.82M 5.95M 19.61M (bitslice FTW!)
We're still generally faster than Hashcat on single thread (or fork),
but not with silly amounts. Perhaps HC doesn't feature interleaving.
Anyway we should be able to improve on SHA512 with at least 5%, which is
what I looked for in the first place %-)
magnum
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