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Date: Tue, 2 Mar 2021 20:12:02 +0100
From: MichaƂ Majchrowicz <>
Subject: Re: Implementing mixed mask attack

OK. No problem I have written simple filter that counts how many
uppercase characters are in candidate and reject those above two. I
run with command like this:
john --format=descrypt  -1=?l?d?u --min-len=1 --mask=?1?1?1?1?1?1?1?1
test.pwd --external=myfilter

However instead of gaining anything I got slower speed :( Looks like
generation of those candidates (which in such case it's pointless)
becomes significant operation so still generating all those mask (with
two uppercase letters for example) and running dozes and dozens of
sessions is the only way :(

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