Date: Thu, 6 Jun 2013 15:45:43 +0200 From: magnum <john.magnum@...hmail.com> To: john-dev@...ts.openwall.com Subject: Re: [pdf] Parallelizing MD5 on Intel Architectures On 6 Jun, 2013, at 1:58 , Lukas Odzioba <lukas.odzioba@...il.com> wrote: > <quote> > In the case of ”John the Ripper”  by which our implementation was > inspired, sourcecode is available for review. On the Xeon machine used > (see ﬁgure 1) John reaches about 7.3 million MD5 iterations per second > in a single thread, whereas our 64 bit implementation reaches 33.4 > million iterations per second. However, there are some differences > which might aﬀect performance, because John the Ripper builds its > passwords by a more complicated grammar using dictionaries. > An earlier unpublished implementation by the authors of this paper > using OpenSSL performed around 0.8 million iterations per second. > </quote> > source: http://wwwcip.cs.fau.de/~spjsschl/md5.pdf > Source code is not available, we do not know what Xeon was tested, but > Is there something that we could make use of? That paper is early 2009... I think 7.3 million must have been 32bit non-SSE2, and not even x2? I get 38 million from current md5crypt using my 2.3 GHz laptop (37920 c/s). magnum
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