On 5/15/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
Other than post by a guy - Terry someone or another - on sci.crypt
a number of years ago - I've never seen any work in this direction.
Is there stuff I'm not aware of?

That would probably be Terry Ritter, www.ciphersbyritter.com.

He calls this function Dynamic Substitution:
http://www.ciphersbyritter.com/#DynSubTech

You could also probably use a Latin square:
http://www.ciphersbyritter.com/#BBMTech
--
"Curiousity killed the cat, but for a while I was a suspect" -- Steven Wright
Security Guru for Hire http://www.lightconsulting.com/~travis/ -><-
GPG fingerprint: 9D3F 395A DAC5 5CCC 9066  151D 0A6B 4098 0C55 1484

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