Openwall GNU/*/Linux - a small security-enhanced Linux distro for servers
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Tue, 27 Mar 2012 07:55:27 -0700
From: Alain Espinosa <alainesp@...il.com>
To: john-dev@...ts.openwall.com
Subject: Re: Research ideas.

On 3/22/12, Solar Designer <solar@...nwall.com> wrote:
> How does your code compare (e.g., in terms of instruction count) to
> what's found in x86-64.S and x86-sse.S?  These were generated with my
> Perl scripts, then hand-edited a bit.  For x86-64, gcc 4.3.x (only these
> versions) generate very decent code as well (maybe even slightly better
> than mine due to instruction scheduling across S-box boundaries), but
> for 32-bit x86's SSE2 and MMX so far the Perl-generated and hand-edited
> code is the best I have seen.

For x86 i let compiler do the job. For x64 there is the numbers:

----------------------------------------------------------------------
HashSuite_old   HashSuite_new  john-x64
----------------------------------------------------------------------
s1: 91		69(24%)		73(5%)
s2: 79		62(22%)		64(3%)
s3: 84		63(25%)		68(7%)
s4: 62		50(19%)		52(4%)
s5: 85		65(24%)		68(4%)
s6: 90		64(29%)		69(7%)
s7: 76		64(16%)		67(4%)
s8: 78		58(26%)		59(2%)
-----------------------------------------------------------------------
all:645		495(23%)          520(5%)

Also to note is that there is 1 xmm register free globally.

saludos,
alain

Powered by blists - more mailing lists

Your e-mail address:

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.