Re: [Khufu] Pre-Computing the S-Boxes and obtaining aux. keys
From: Nikola Skoric (nick-news_at_net4u.hr)
Date: 11/01/04
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Date: Mon, 1 Nov 2004 17:46:57 +0100
Dana 1 Nov 2004 04:52:14 -0800
Matt (matt_crypto@yahoo.co.uk) kaze...
> Try the following address:
>
> http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5,003,597.WKU.
>
> Then click on "Images", and browse the document (it's a series of TIFF
> images, you might need special graphics software to view them).
Thanks, I found it already following the link you provided in your
previous post, but thanks for the effort anyway. :-)
> Eventually you get to C source code, including some which generates
> the S-box from the RAND numbers. And, moreover, some test vectors,
> which are quite useful for testing your own implementation. Hope that
> helps somewhat.
Niiice. I haven't look deeply into the document as I have rather slow
Internet connection, but I'll study it in detail tomorrow on university
machine...
> If you manage to get a working Khufu implementation,
> I'd encourage you to release the source code on the Internet,
Mhm... don't know what US patent office would think about that... and
I'm coding in C# (yes, I could have coded it in C++, but I never thought
of publishing this code and my C# skills are much greater than my poor
knowledge of C++), so the preformance, portability and other similar
problems are risen... and my coding is everything but elegant.
But, OTOH, I already am spending a formidable amount of time for coding
the bloody thing, so I probably could find a spare afternoon for making
the code comprehensible to general public... don't know, I'll see what
my teacher says about the idea.
-- "Stara boljka se leci starim lekom... Dabome vinom, ta nebi valjda mlekom?"
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