Security Basics mailing list archives

Re: Please Review a Diffie Hellman diagram


From: "Stephen J. Smoogen" <smooge () gmail com>
Date: Sun, 15 Jan 2006 20:06:22 -0700

On 1/15/06, Saqib Ali <docbook.xml () gmail com> wrote:
Hi Stephen,

Thanks for the response.

I think that the first thing to do is choose some other Random
numbers.. they caused some confusion at first about how much info Evil
Eye had.

Any suggestions for the Xa, Xb, P and G values. I have update these
value in the latest revision of the diagram. see:
http://www.xml-dev.com/blog/index.php?action=viewtopic&id=196


The newer values are better.

The second thing I would do is put into the Evil Eye info
what he knows (assuming he knows the equation being used etc). This
would show at the end that he doesnt know the secret key but has to
guess at what either XA or XB is.

This is a good idea. Any suggestion on how to depict this in a diagram?


Just in the column where the Evil Eye is that each time it sees stuff,
what it knows of the equation to be. And in the end, what equation
Evil Eye would need to compute to figure out what secret key is.

--
Stephen J Smoogen.
CSIRT/Linux System Administrator

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