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Date: Wed, 8 May 2024 12:34:04 +0200
From: Albert Veli <>
Subject: Markov phrases in john

Hi, as many of you know a mask will not try combinations of characters
in alphabetical order but rather in the most likely to least likely order
using something like Markov chains:

./john --stdout --mask='?l?l'

This is useful to find human-created passwords early. Nowadays it is more
and more popular to use combinations of words to create passwords. Would
it be possible to use Markov or similar to traverse entire words from a
wordlist and use the most common pair of adjacent words from the list
first, then the second most common and so on?

Like Markov does for individual characters, but on entire words instead?
I hope you understand what I mean. Then maybe extend this to three
words. It is possible with the '?l?l?l' mask so in some way it should be
possible to do for entire words too. Ideally there would be an option to
specify word delimiter too. Maybe even an option to provide a corpus text
to train the chains on. Then an option to specify how many words to
include in the guesses, the top 100 words, the top 500 words or the top
2000 words and so on. For two word combinations you can use a larger
number and for three or four words, smaller numbers.

What do you think? Would this be useful, or is it possible now already?



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