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Date: Fri, 16 Jun 2006 17:16:25 +0000 (UTC)
From: Phantom <phantom_otw@...oo.com>
To: john-users@...ts.openwall.com
Subject: Inverted chatsets?
Hey Solar
Was wondering if you would consider an option/switch for creating
"inverted charsets" using the opposite of the algorithm used to create the
default charsets.
Consider the following scenario:
a passfile with e.g. 1000 hashes.
You have run -single mode, wordlist mode, wordlist -rules and have run the
different incremental modes for several days/weeks/months...
After all these runs, you still have 50-100 hashes left that have not yet been
decrypted.
So it might be, that since you have tried the conventional methods, and they
have stopped beeing efficient, it might be that these last hashes have
passwords that do NOT follow the conventional patterns and therefor it will take
very long to hit them with normal charsets.
However, if one were to attack them using charsets that are the inverted or
opposite of the default created ones, one might get faster hits on these
leftover hashes?
This might be complete nonsense, but atleast would be interesting to see if
opposite charstes would have a better hitrate on these kind of leftover
hashes that have already been worked on alot by concentioanl methods and might
not follow the conventional "rules" for password creation....
Regards
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