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Re: Wisecracker 1.0 - A high performance distributed cryptanalysis framework
From: Jann Horn <jannhorn () googlemail com>
Date: Sat, 10 Nov 2012 15:45:39 +0100

On Mon, Nov 05, 2012 at 03:56:21PM -0500, Vikas N Kumar wrote:
Wisecracker is an open source high performance distributed
cryptanalysis framework that leverages GPUs and multiple CPUs. It
allows security researchers to write their own cryptanalysis tools
that can distribute brute-force cryptanalysis work across multiple
systems with multiple multi-core processors and GPUs. Security
researchers can also use the sample tools provided out-of-the-box. The
differentiating aspect of Wisecracker is that it uses OpenCL and MPI
together to distribute the work across multiple systems, each having
multiple CPUs and/or GPUs.

As an example an MD5 reversing for 6-8 character strings is provided.

More information including source code, technical papers and API
documentation can be found at

Developers @ Selective Intellect LLC.

I don't think this statement on your website makes much sense:

    A user can download Wisecrackerâ„¢ on a GPU cluster virtual machine
    provided by Amazon EC2® and reverse an MD5 cryptographic hash for
    a 6 character password in about 20 minutes if using 1 virtual
    machine or in about 3 minutes if using 2 or more.

What does "2 or more" mean here? If I use two machines in parallel, that's
more than six times as fast as only using one machine? Seems weird to me.

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