[12374] in cryptography@c2.net mail archive
Re: [IP] Master Key Copying Revealed (Matt Blaze of ATT Labs)
daemon@ATHENA.MIT.EDU (Matt Blaze)
Fri Jan 24 15:27:05 2003
X-Original-To: cryptography@wasabisystems.com
X-Original-To: cryptography@wasabisystems.com
To: Derek Atkins <derek@ihtfp.com>
Cc: Len Sassaman <rabbi@abditum.com>,
"Arnold G. Reinhold" <reinhold@world.std.com>,
cryptography@wasabisystems.com
In-Reply-To: Message from Derek Atkins <derek@ihtfp.com>
of "24 Jan 2003 15:17:22 EST." <sjmfzrib8vh.fsf@kikki.mit.edu>
Date: Fri, 24 Jan 2003 15:21:00 -0500
From: Matt Blaze <mab@research.att.com>
Actually even in their Biaxial design the sidebar hole is always on the
bottom pin, and so the master shares the angle with the change keys.
-matt
> There is, however, a newer medeco design that uses a drill-hole
> instead of a groove. With that design you can have the pin twist be
> different at different pin-heights (by putting the drill-hole at a
> different twist-angle). I don't think this attack would work quite
> as easily on this design.
>
> -derek
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