Re: Back Doors

From: Foo Bar (foobar965_at_hotmail.com)
Date: 12/26/03 

Date: Fri, 26 Dec 2003 20:46:01 GMT

"Tom St Denis" <tomstdenis@iahu.ca> writes:

> "David Eather" <eather@tpg.com.au> wrote in message
> news:3fec4be9@dnews.tpgi.com.au...
> > I read a paper by the creators of AES - it was on certain patterns in
> large
> > S-Boxes that formed trap doors and allowed for easy decryptions.
>
> Yes. I don't recall the name of the paper but the jist was you embed linear
> weaknesses in the sbox. You make the sbox big enough so they're hard to
> find [even with a fast transform].

I gave a reference to that paper in my post to this thread with message
id <fy%Eb.39217$mU6.142195@newsb.telia.net>.

<SNIP>
 
> The scheme is totally impractical but was neat nonetheless.

And broken.

/FB 

-- 
Foo Bar (foobar965@hotmail.com)
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