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Date: Mon, 15 Sep 2014 13:52:24 -0500 (CDT)
From: Steve Thomas <>
Subject: Re: [PHC] Schvrch is broken

> On September 15, 2014 at 1:08 PM Bill Cox <> wrote:
> > On 09/15/2014 01:05 PM, Steve Thomas wrote:
> >
> > I guess I should of just posted code in my first message:
> >
> >
> > This takes about 3 minutes to run. With SSE or AVX it will be
> > faster but this is a nice PoC. Note that the generation only needs
> > to be done once per m_cost and once for each t_cost when m_cost is
> > zero.
> >
> Wow, you're good! Really good... You considered *this* code too ugly
> to post? Generating the XORs and compiling them totally beats the
> speed of what I was going to do (compute them on the fly as matrices).
> I see that I need to try and be an even more evil attacker :-)

Thanks and this isn't the ugly code I cleaned it up a bit. This was one file and
a lot of commented out code.

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