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Date: Thu, 05 Apr 2007 00:46:07 +0200
From: Michal Luczaj <>
Subject: Re: IPB2

Hax xor wrote:
> i have a problem with some ipb2 hashes. I have a file with 22 hashes,
> but john recognizes only 4 of them:
> user:$IPB2$522C31324B$6dac4780d75cafd46b44b71ad32dedf1
> (R,12K=salt=522C31324B)
> is one of the hashes john doesn't load (./john --format=ipb2 passfile.txt)

Uhm. It's about case sensitivity, I guess. You should provide salt
encoded in lower case characters (in this case: 522c31324b), just like
you did with the hash (that part after 3rd '$').

No, it's not a bug. It's a feature :] Oh, well, may be quite annoying
indeed... I will fix it later.

> user2:$IPB2$2923403743$d4b8ea443ce8a262490edd5f03ae76b2
> john cracked it within a few minutes

Yup, no upper case letters and everything went fine.


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