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Date: Mon, 21 Aug 2017 19:51:58 +0200
From: magnum <john.magnum@...hmail.com>
To: john-users@...ts.openwall.com
Subject: Re: similar standard and dynamic variants?
On 2017-08-20 16:13, Royce Williams wrote:
> What is the difference between some of the standard formats and their
> dynamic cousins?
>
> dynamic_0 md5($p) (raw-md5) 128/128 AVX 4x3
> Raw-MD5 MD5 128/128 AVX 4x3
>
> dynamic_26 sha1($p) raw-sha1 128/128 AVX 4x1
> Raw-SHA1 SHA1 128/128 AVX 4x
It's just different implementations/code paths. The dynamic format is
really one single format that can do many algos and combinations of
algos. It can do raw too, so lists them. Sometimes they differ in max.
length. Many years ago, dynamic would even do them faster in some builds
but nowadays (especially on Intel stuff) the dedicated formats are
usually faster.
Moreover, we now also have the "dynamic compiler" formats that are even
more generic (so even less optimized but OTOH very flexible).
$ ../run/john -test -form:dynamic='md5($p)'
Benchmarking: dynamic=md5($p) [128/128 AVX 4x3]... DONE
Raw: 28168K c/s real, 27889K c/s virtual
$ ../run/john -test -form:dynamic_0
Benchmarking: dynamic_0 [md5($p) (raw-md5) 128/128 AVX 4x3]... DONE
Raw: 32558K c/s real, 32884K c/s virtual
$ ../run/john -test -form:raw-md5
Benchmarking: Raw-MD5 [MD5 128/128 AVX 4x3]... DONE
Raw: 38750K c/s real, 38750K c/s virtual
magnum
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