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Date: Wed, 14 Nov 2012 08:24:00 +0400
From: Solar Designer <solar@...nwall.com>
To: john-users@...ts.openwall.com
Subject: Re: How does incremental mode works?
On Tue, Nov 13, 2012 at 09:54:28AM -0500, Rich Rumble wrote:
> Incremental mode does not repeat, or it tries very hard not to,
Incremental mode produces no repeating candidate passwords at all.
However, if you run different .chr files with overlapping characters
between them, then there will be overlapping candidate passwords across
the 2+ runs.
> other modes however are more prone to repeating and unique isn't going to
> keep that from happening.
I think Richard was going to use "unique" on the generated candidate
passwords, not on the input wordlists. doc/EXAMPLES includes this:
john --wordlist=all.lst --rules --stdout | unique mangled.lst
john --wordlist=mangled.lst mypasswd
> Certain wordlist rules will produce the same
> candidates even if the words are all unique. This isn't that big a
> deal, when doing an audit I know I produce the same candidates, but I
> also produce enough different one's that it's worth it. If you run JtR
> simultaneously on two different computers, and there are repeats I
> find it's not wasting as much time.
Right. I guess you're mostly attacking fast hashes, though, which is
why you don't care about the time wasted on some duplicates. :-)
Alexander
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