Penetration Testing mailing list archives
RE: john the ripper
From: "Benjamin Tomhave" <falcon () secureconsulting net>
Date: Mon, 8 Dec 2003 11:58:08 -0700
Scary numbers...so, semi-drifting question: how long is an "acceptable" length of time to run a cracker before pronouncing that uncracked passwords are "reasonably strong and well-chosen"?
-----Original Message----- From: Mike [mailto:myname17 () bellsouth net] Sent: Monday, December 08, 2003 3:45 AM To: Giacomo; pen-test () securityfocus com Subject: Re: john the ripper I recently did a little research on this, and if the password was well chosen you will not find the password. An 8 character password, based on a 72 character set (26 lower case letters, 26 uppercase letters, 10 digits, and 10 special characters) results in 72^8 or 7.2x10^14 possible passwords. My reference PC was only able to crack at 1500c/s. Doing the math reveals that 150,000 years would be required to crack all combinations, or 75,000 years on average. For a 12 character password the result was 2,000,000,000,000 years. If my math is wrong, please break it to me gently. Mike On Tuesday 02 December 2003 10:52 am, Giacomo wrote:Hi all I am tryning to crack cisco md5 password. Currently I am using a Athlon XP2500barton at 2300mhz, after 17days john continue to crack at 3800c/s (it started at 4500c/s). I am asking myself and all of you what is the best system (hardware) to crack md5 password. I am thinking that the best way Is the powerfull (mhz) i386 in commerce. I've tried OpenMosix with 4 p500 nodes with john and cisilia, but without lucky results. The sun 280 (dual 64bits cpu at 900mhz) go to a poor 900c/s which is you reference system to use john on md5 password ? Giacomo------------------------------------------------------------------ --------------------------------------------------------------------------- ---------------------------------------------------------------------------- --------- ------------------------------------------------------------------ ----------
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Current thread:
- john the ripper Giacomo (Dec 03)
- Re: john the ripper fbr (Dec 03)
- Re: john the ripper Timo Schoeler (Dec 04)
- Re: john the ripper Jon Hart (Dec 04)
- Re: john the ripper Giacomo (Dec 04)
- Re: john the ripper dshingiz (Dec 06)
- Re: john the ripper R. DuFresne (Dec 03)
- Re: john the ripper Michael Thumann (Dec 04)
- Re: john the ripper Mike (Dec 08)
- RE: john the ripper Benjamin Tomhave (Dec 08)
- Re: john the ripper Martin Mačok (Dec 10)
- RE: john the ripper Anish M (Dec 09)
- RE: john the ripper Arthur Clune (Dec 09)
- RE: john the ripper Benjamin Tomhave (Dec 08)
- <Possible follow-ups>
- RE: john the ripper Brass, Phil (ISS Atlanta) (Dec 04)
- Re: john the ripper Jason Watson (Dec 04)
- Re: john the ripper bofn (Dec 06)
- Re: john the ripper Marco Ivaldi (Dec 06)
- RE: john the ripper Tony Kava (Dec 06)
- RE: john the ripper OBrien, Brennan (Dec 08)
- RE: john the ripper Jason Watson (Dec 10)
(Thread continues...)
- Re: john the ripper fbr (Dec 03)