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

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Message-ID: <20081103083824.GA27169@Chamillionaire.breakpoint.cc>
Date:	Mon, 3 Nov 2008 09:38:25 +0100
From:	Sebastian Andrzej Siewior <sebastian@...akpoint.cc>
To:	Jeff Garzik <jeff@...zik.org>
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

* Jeff Garzik | 2008-11-02 20:44:40 [-0500]:

> 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?
It should. All have something like:
| :Skein-512:   512-bit hash, msgLen =     8 bits
512 algo, 512 output. 

The third one has:
| :Skein-512:   512-bit hash, msgLen =  2040 bits. Tree: leaf=02, node=02, maxLevels=02
So it looks like the same except that it has the "Tree: leaf node"
attribes as well. So maybe this is something special maybe not. As I
browsed the .txt files for other vectors I did not find any where msglen
wasn't a multiple of 4 bytes (except some odd ones where msgles was 7
bits). Maybe I did not look close enough.

> 	Jeff

Sebastian
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