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Date: Fri, 05 Mar 2010 20:11:43 +0100
From: "Magnum, P.I." <rawsmooth@...dband.net>
To: john-users@...ts.openwall.com
Subject: Re: Feedback on the generic crypt(3) patch

> http://www.openwall.com/lists/john-users/2009/11/05/1

Some more thoughts regarding the generic-crypt(3) patch. I always 
wondered what was actually measured when benchmarking this "format". 
Just DES or a mixture of formats? The code revealed it was DES only.

In case anyone share my curiousity, I enclose a little patch making it 
easy to choose which format is tested/benchmarked, as a compile time 
option. It's supposed to be applied after the crypt-1 patch.

Here's some example figures, including figures from the optimized 
versions of DES and MD5 for comparison:

---8<---------8<---------8<---------8<------

Benchmarking: Traditional DES [128/128 BS SSE2-16]... DONE
Many salts: 4504K c/s real, 4563K c/s virtual
Only one salt:  3884K c/s real, 3884K c/s virtual

Benchmarking: generic crypt(3) OS call (using DES) [?/64]... DONE
Many salts: 421162 c/s real, 425416 c/s virtual
Only one salt:  417396 c/s real, 417396 c/s virtual

Benchmarking: FreeBSD MD5 [32/64 X2]... DONE
Raw:    20248 c/s real, 20640 c/s virtual

Benchmarking: generic crypt(3) OS call (using MD5) [?/64]... DONE
Many salts: 8061 c/s real, 8118 c/s virtual
Only one salt:  8087 c/s real, 8087 c/s virtual

Benchmarking: generic crypt(3) OS call (using SHA-256) [?/64]... DONE
Many salts: 385 c/s real, 387 c/s virtual
Only one salt:  463 c/s real, 463 c/s virtual

Benchmarking: generic crypt(3) OS call (using SHA-512) [?/64]... DONE
Many salts: 383 c/s real, 384 c/s virtual
Only one salt:  461 c/s real, 461 c/s virtual

---8<---------8<---------8<---------8<------

View attachment "crypt-benchmark.diff" of type "text/x-patch" (2134 bytes)

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