From: Mark Aldrich <maldrich@grctechs.va.grci.com>
Date: Fri, 8 Mar 1996 01:37:42 +0800
To: cypherpunks@toad.com
Subject: What's anyone know about Teledyne Electronic Technologies?
Message-ID: <Pine.SCO.3.91.960306150942.15297I-100000@grctechs.va.grci.com>
MIME-Version: 1.0
Content-Type: text/plain


Teledyne (TET) is out marketing a "new" crypto system as a competitor 
against DES and what TET calls "linear" cryptosystems.  They are claiming 
a non-linear approach in which (as best I can tell) they are permuting 
the s-boxes and using 4 bit/16 entry substitution tables.

They are also asserting that these "key generated substitution tables and 
inter-round permutations" are supported by "nonlinear orthomorphic 
mappings generated from arbitrary key" (and that this is patented) and 
"row-complete Latin Squares generated from an arbitrary key" (and that 
this is also patented).

The claimed benefits include being invulnerable to differential and 
"linear" cryptanalysis, no linear key/data interaction to hide, that this 
results in the tables and permutations being "transient/secret," and that 
fewer rounds are needed (fewer than what, I don't know) to attain 
"resistance to cryptanalysis."

If there's any c'punks who'd care to comment on these notions, I'd very 
much appreciate the feedback.  Also, if anyone's actually seen the 
algorithm, reviewed it, or knows of published material about these 
techniques, I'd also appreciate seeing those posted.  Of course, any 
feedback from existing customers of TET would also be great.

Thanks!

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