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Date: Fri, 28 Jun 2013 20:37:33 +0200
From: Lukas Odzioba <>
Subject: Re: Parallella: bcrypt

2013/6/28 Katja Malvoni <>:
> Can you please give me some tips on how to start integration?

1) I assume that we will have to use some external libs to use your
code (am I right?). If so you need to create separate makefile target
for it.
2) Second part is to create format file (with _fmt.c extension) - you
can use existing bcrypt format (BF_fmt.c) and modify it to your needs.
Documentation of fomat iterface (fmt_main structrue) is in formats.h/c

crypt_all() is the function where you should compute bcrypt on parallela.

Format label variable should be something like "bcrypt-parallela", you
will be able to use it to "test" your format:
./john -test -format=bcrypt-parallela

3) Add to john.c reference with fmt_main struct (extern decraration +
john_register one) inside proper ifdef like we do for OpenCL and CUDA.

If you have some more questions feel free to ask,

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