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Date: Mon, 30 Jan 2012 08:17:22 +0100
From: Frank Dittrich <>
Subject: Re: Adding a new format

On 01/30/2012 02:43 AM, wrote:
> This really would be good for a wiki page.  
> A page listing the functions, when they are called within john,
> and how they should be viewed.
> Then the differences between salted and unsalted formats, etc.

Some information about when/how to use *_fmt_plug.c, and when not to use
it, advantages of the *_fmt_plug approach (no modifications to john.c,
Makefile, ...).

Also, some information about how to use common basic functions (like
SHA-1 digest or MD5 digest functions, how to first make sure the general
functionality works, then how provide optimized versions.

Providing links to github comparing 2 revisions of a sample format might
(prior to optimization and after optimization) may be all that is needed.


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