On Thu, 5 Dec 1996, pclow wrote:
Sorry Dr Boz, but all I saw on the page was this :
"404 Not Found
The requested URL /whitepaper.htm was not found on this server. "
I would like to point out that our white paper with technical details can be found on our Web-site: www.dsnt.com/whitepaper.htm
-- Dr. Eva Bozoki Chief Scientist DSN Technology, Inc. (516)467-0400
Almost, but not quite: you forgot a trailing "l". http://www.dsnt.com/whitepaper.html Anyway, 512 bit for a permanent public key doesn't sound that safe. And this phrase: Encrypting the Diffie-Hellman exchange and changing the dynamic common key every 24 hours foils "man-in-the-middle" attacks because each renegotiation authenticates the two boxes to each other. sounds especially obscure to me. If the initial exchange of the "permanent common private key" through a non-authenticated D-H key exchange was compromised (as it is entirely possible) by a man-in-the-middle attack, also the subsequent D-H key exchanges encrypted with that supposedly common key will be subject to the same attack: actually there will be TWO non-common private keys, and the man in the middle will know both of them. Enzo