Dr. Chang's Key Exchange

[Graham Bignell]

Hello,

I am looking for analysis or implementations of Dr. C.N. Chang's
patent 5583939 "Secure, Swift Cryptographic Key Exchange" or the
newer #5987130 "Simplified Secure Swift..." and hoping listfolk
can point me in the right direction.

The only references I have found so far are towards a product called
"CET CipherKit" in a FAQ, (but not the kit itself) and in a MS outlook
plugin from ELQR.com.

I would be delighted by any relevant opinion or comment about the
key exchange process and how it could be attacked.  Statements like
"it is mathematically impossible to compute..." make my brow furrow
in a vain attempt to understand the issue.

---
Graham "Lorax" Bignell - 416 366 9755 - 604 721 0416
1024D/57A07181 = CF49 889B 9266 030C F0FD  7298 30B6 98D5 57A0 7181


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