What's anyone know about Teledyne Electronic Technologies?
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! ------------------------------------------------------------------------- |So, I went walking through the street. |Mark Aldrich | |I saw you strung up in a tree. |GRCI INFOSEC Engineering | |A woman knelt there, said to me, |maldrich@grci.com | |Hold your tongue, man, hold your tongue. |MAldrich@dockmaster.ncsc.mil | |_______________________________________________________________________| |The author is PGP Empowered. Public key at: finger maldrich@grci.com | | The opinions expressed herein are strictly those of the author | | and my employer gets no credit for them whatsoever. | -------------------------------------------------------------------------
Mark Aldrich writes:
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).
Lothrop Mittenthal, who is Senior Cryptologist at TET, gave a sparsely- attended talk about some or all of this stuff at the RSA conference in January. The title was "Statistically Efficient Inter-round Mixing in Block Substitution Devices". I came in late and was ill-prepared to evaluate much of what he was presenting, so I can't offer any useful technical opinion. Copies of his transparencies are in the RSADSC proceedings, so you might try to borrow someone's copy, or I suppose someone could scan `em and mail you a copy. He didn't give an email address AFAIK, but according to the proceedings his phone is (in the PST zone) (805) 498-3621 ext. 5005 Lots of cypherpunks were wandering around there, so maybe someone else heard the whole seminar and can comment. (CME ?) -Lewis "You've got no secrets to conceal. How does it feel ?" (Dylan)
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lmccarth＠cs.umass.edu -
Mark Aldrich