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RE: john the ripper
From: Tony Kava <securityfocus () pottcounty com>
Date: Thu, 4 Dec 2003 17:12:52 -0600

-----Original Message-----
From: Giacomo [mailto:badgiaco () supereva it] 
Sent: Thursday, 04 December, 2003 05:21
To: fbr
Cc: pen-test () securityfocus com
Subject: Re: john the ripper

fbr wrote:

The following benchmarks are all "FreeBSD MD5 [32/32]" tests done with 

Intel(R) Pentium(R) 4 CPU 3.20GHz
5903 c/s real, 5903 c/s virtual

Intel(R) Pentium(R) 4 CPU 2.40GHz
4094 c/s real, 4355 c/s virtual

Pentium III (Coppermine)
2455 c/s real, 2455 c/s virtual

Can anyone provide any Athlon benchmarks?


On Tuesday 02 December 2003 04:52 am, Giacomo wrote:

I think that test isn't true, how It can know the speed to crack 2 or 8 
character password ?
In my cpu athlon xp 2500 barton (1833mhz) john -test show me 5308c/s 
(real and virtual) but in the reality it is cracking at 3500c/s 
(incremental:All after days)

The test is just a benchmark.  Your mileage may vary.  You should notice a
gradual decrease in speed as your incremental cracking works it way up to
more complex passwords.  I put together my own Perl-based system to
distribute cracking with a web interface for monitoring the progress.  Using
MRTG to graph the rate will show you a nice downward curve.  If you are
trying all characters you may want to reconsider based on the system from
which the password was taken.

Tony Kava
Network Administrator
Pottawattamie County, Iowa


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