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Message-ID: <20110808031244.GA20074@openwall.com>
Date: Mon, 8 Aug 2011 07:12:44 +0400
From: Solar Designer <solar@...nwall.com>
To: john-users@...ts.openwall.com
Subject: Re: I posted that, but may be missing due contest
W/A/ -
This is mostly off-topic for john-users, but since it's already in here,
I'll reply this one time.
On Sun, Aug 07, 2011 at 06:58:09PM +0200, websiteaccess@...il.com wrote:
> I have downloaded john 1.7.8 5c4 my account at contest.openwall.net
>
> I would like add digits + symbols (_-+/:, etc???) + letters with accent
> (from european countries, such ?? ?? ?? ?? ?? ?? ?? etc..) and length
> (actually 8 with -i mode) = 13 characters.
>
> I know how to do with former version 1.7.8 jumbo 5) but not with the
> latest.
> Is someone can tell me what change in the params.h ?
>
> #define CHARSET_MIN ' ' <--- to change ?
> #define CHARSET_MAX 0xFF <--- to change ?
> #define CHARSET_SIZE (CHARSET_MAX - CHARSET_MIN + 1)
> #define CHARSET_LENGTH 15 <--- to change ?
The defaults in 1.7.8-j5c4 are:
#define CHARSET_MIN ' '
#define CHARSET_MAX 0x7E
#define CHARSET_SIZE (CHARSET_MAX - CHARSET_MIN + 1)
#define CHARSET_LENGTH 15
To allow for accents, you need to change CHARSET_MAX to:
#define CHARSET_MAX 0xFF
No other change is needed. Of course, you'll need to regenerate your
.chr files after this change.
For others on john-users: yes, the 64-bit overflow problem in the code
is avoided in the contest revision of it, so settings such as the above
work fine. This will be available as a standard feature a bit later.
> Mac os X users : About compilation john-1.7.8-j5c4, you have to change
> each occurrence of "sse-intrinsics.S" with "sse-intrinsics.o" in the
> make file (src/make).
> Without these changes compilation will fails.
This is also contest-specific. We used a pre-generated assembly file
for sse-intrinsics.c produced with Intel's compiler in the contest
edition of JtR. Thus, we got optimal performance for MD5-based hashes
on x86-64 (using SSE2) even on systems with gcc and even with older
versions of gcc. But it was a hack, indeed. And as W/A/ reported, the
pre-generated assembly file did not work with the assembler of Mac OS X.
I was not surprised. The contest edition was focused on Linux builds.
Alexander
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