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Date: Wed, 15 Feb 2012 09:01:47 -0500
From: "aprivater@...il.com" <aprivater@...il.com>
To: john-users@...ts.openwall.com
Subject: Re: sha1 + hex salt
Solar Designer wrote:
> On Wed, Feb 15, 2012 at 12:39:05AM -0500, aprivater@...il.com wrote:
>> is john supports sha1 bruteforce with a hex salt?
>
> As far as I'm aware, there's currently no easy way to specify salts in
> hex, except in some special cases (the XSHA format happens to be almost
> right for your case - but see below).
>
>> sha1:20c59472b34ec4b9678b7149d519a2338bc31ba9 salt:00000000
>> password is 92086390
>
this is pl script do the job, but it takes about 15min to complete on
average computer with no gpu, is any way to speed it up?
how can i convert it to asm or c? thank you
#!/usr/bin/env perl
use strict;
use warnings;
use Digest::SHA qw (sha1_hex);
my $max = 99999999;
my $target = $ARGV[0] or die ("usage: $0 hash\n");
for (my $i = 0; $i < $max; $i++)
{
printf ("%4.1f%%\n", ($i / $max) * 100) if (($i % 100000) == 0);
my $plain = sprintf ("%08d\0\0\0\0\0\0\0\0", $i);
my $hash = sha1_hex ($plain);
if ($hash eq $target)
{
print $i, "\n";
exit;
}
}
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