linux-kernel - Re: [PATCH] crypto: add test vectors for skein256/512/1024

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Date:	Sun, 02 Nov 2008 20:44:40 -0500
From:	Jeff Garzik <jeff@...zik.org>
To:	Sebastian Andrzej Siewior <sebastian@...akpoint.cc>
CC:	herbert@...dor.apana.org.au, davem@...emloft.net,
	linux-crypto@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] crypto: add test vectors for skein256/512/1024

Sebastian Andrzej Siewior wrote:
> I grabed them from http://www.schneier.com/skein.html. The last test vector
> (3) in every category is currently deactivated because it failed always.
> It is unlikely that I made a type because I copy+pasted the tables + vim
> magiced them. So maybe code may missbehave on requests lengths which are
> not a multiple of 4 or the vectors can not be used due to some other
> limitations that I've overseen.

Another thought:  did you verify that the test vectors' output sizes 
matched the Linux kernel's?

My implementation assumed a 256-bit output size for Skein-256, for 
example, but it is quite possible that Schneier and co. ran tests where 
the output size differed from the internal state size.

	Jeff


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