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Date: Wed, 12 Aug 2015 01:32:21 +0200
From: magnum <john.magnum@...hmail.com>
To: john-dev@...ts.openwall.com
Subject: Re: Lei's weekly report #15
On 2015-08-11 20:39, magnum wrote:
> On 2015-08-10 18:27, Lei Zhang wrote:
>> I'm still struggling to make episerver work with the SIMD SHA1/2
>> functions. Magnum, could you take a look at my code?
>> https://github.com/zzlei/JohnTheRipper/blob/sha2/src/episerver_fmt_plug.c
>> <https://github.com/zzlei/JohnTheRipper/blob/sha2/src/episerver_fmt_plug.c>
>>
>> I've been tweaking this file hard, but there's still something wrong.
>> Maybe you can notice some obvious mistake in it (?)
>
> Attached is a diff against your repo that fixes the problems. There were
> a few minor (but very effective) bugs and I did a few other changes for
> clarity. Try to understand the bug fixes fully.
>
> Also, now you should move the "write salt to SIMD buffer" from
> crypt_all() to set_salt(). I believe that will boost the "Many salts"
> benchmark figure a lot.
BTW some other problems remain:
1. You use NBKEYS assuming that SIMD_PARA_SHA1 and SIMD_PARA_SHA256 are
the same value. They may not.
2. The output of SIMDSHA1body() and SIMDSHA256body() differs in size,
but your cmp_* and get_hash_* functions assume SHA-256. You either have
to re-map SHA-1 to SHA-256 format after calling the function, or make
these functions act differently depending on cur_salt->version.
3. You should set ALGORITHM_NAME to reflect use of SIMD.
magnum
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