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Date: Fri, 3 Aug 2012 22:07:45 +0400
From: Aleksey Cherepanov <aleksey.4erepanov@...il.com>
To: john-users@...ts.openwall.com
Subject: Re: any plans to support superlong passwords?

On Tue, Jul 31, 2012 at 08:14:32PM -0400, Rich Rumble wrote:
> On Tue, Jul 31, 2012 at 6:17 PM, Stephen John Smoogen <smooge@...il.com> wrote:
> > What hashes are you talking about? You can get a lot of unlimited
> > length hashes via say the --format=crypt which falls back to OS level
> > algorithms which are slow but have unlimited lengths. (I do this for
> > md5crypt that are longer than 15 characters and similar items).

--format=crypt is a good tip.

> I've tried some long ones for NT
> 
> "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do
> eiusmod tempor incididunt ut labore et dolore magna aliqua. U
> user:025649DF316DAA1842D3CFD2B981158A:::127 characters I think
> 
> "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do
> eiusmod tempor incididunt ut labore et dolore magna aliqua.
> user:8778EA7E51275073B11EC595CB8811C1:::space is after the full stop
> 
> "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do
> eiusmod tempor incididunt ut labore et dolore magna aliqua.
> user:4F9942C46E4DF4D2351611BE416B76F6:::no space after full stop
> 
> "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
> user:43940FFADD888E02FC2A00F2B1617457:::74 characters
> 
> The quote for the plain-text above is intention. This is just an
> example, it gets tedious to type 20+ character pass phrases so *some*
> limits on length isn't all that bad.

Team Hashcat said: "... recent breaches. Statistically the average
password length is eight (8) characters."
(https://contest-2012.korelogic.com/team_hashcat.html )

> I think korelogic stated that the
> average password length was 21-22 characters? So perhaps the phrases
> we were using could of been more effective during the contest? I could
> be wrong.

Yes, KoreLogic said about average length of 21 bytes during CMIYC 2012:
https://twitter.com/CrackMeIfYouCan/status/229383879063117825

It is possible to have optimized formats without limits. Though I
guess it is not worth the effort. Right?

Though it is possible to look into reverse way: to add formats with
lesser maximum length to achieve higher speeds. Though it seems
disputable.

Thanks!

-- 
Regards,
Aleksey Cherepanov

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