[16640] in cryptography@c2.net mail archive
Re: Where to get a Jefferson Wheel ?
daemon@ATHENA.MIT.EDU (Hadmut Danisch)
Wed Jan 5 17:44:48 2005
X-Original-To: cryptography@metzdowd.com
X-Original-To: cryptography@metzdowd.com
Date: Wed, 05 Jan 2005 19:29:50 +0100
From: Hadmut Danisch <hadmut@danisch.de>
To: "Dean, James" <Jdean@lsuhsc.edu>
Cc: "'Mads Rasmussen'" <mads@opencs.com.br>,
cryptography@metzdowd.com
In-Reply-To: <348A1D7CC0A1964D8766F1E42156035D04E3DD@lsumcbolivar.lsumc.edu>
Dean, James wrote:
> >> The order of the wheels can't be changed.
> > So this encryption device doesn't use any key?
>
> Only the most trivial; you choose the row to transmit.
From what I've seen on the web not even that:
Unlike the original Jefferson wheel these toys are not
intended to choose any row, but to use the row directly
under the plaintext row as cipher text. Instead of the
line indicator from Jefferson, they have a sliding
bar with two windows for two subsequent rows.
regards
Hadmut
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