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Message-ID: <79B3E7308B4D4F6DBEF6B819B55C93D6@apple9d23c8f76>
Date: Fri, 7 Feb 2014 10:29:05 +0100
From: "JohnyKrekan" <krekan@...nykrekan.com>
To: <john-users@...ts.openwall.com>
Subject: Re: questions about Incremental attack
Hello, Thanx for information, I was only interested whether all this code is
your idea, or have you taken some inspiration from some other books/papers
about probability which could be informative for me.
Nice day
Jan Krekan
----- Original Message -----
From: "Solar Designer" <solar@...nwall.com>
To: <john-users@...ts.openwall.com>
Sent: Thursday, February 06, 2014 4:45 PM
Subject: Re: [john-users] questions about Incremental attack
> On Thu, Feb 06, 2014 at 10:29:39AM +0100, JohnyKrekan wrote:
>> Hello, I would like to ask what mathematical principles are used in
>> John's Incremental attack
>> I use John to generate potential passwords for testing WPA PSK network's
>> security.
>> I have generated my own chr file from my wordlist and then use
>> john -i=alpha --stdout
>> (I replaced standard alpha with my own)
>> to generate those candidates which are very useful.
>> My questions are:
>> 1. What mathematical method is used to generate the chr file from the
>> wordlist? Where could I read more about that?
>
> I'm afraid the best place is charset.c in the source tree. It does have
> some comments.
>
>> 2. What is the algorithm which is used to generate the potential
>> candidates using this table?
>
> I'm afraid the best "description" is inc.c, especially inc_key_loop().
> It is not commented, but it is not very complicated.
>
> Alexander
>
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