On Wed, Apr 9, 2008 at 2:21 PM, Julian <[EMAIL PROTECTED]> wrote:
> Right, Gotcha!
>
>  There is one flaw in this design however.
>
>  Peers:
>  A, B, E
>
>  By this scenario all three peers would be able to communicate, not just A
> and B, but also E.

If E does not have a certificate signed by the CA, then A and B will
refuse to talk to it.

Who is E?  Eve?
Who is A?  Alice?
Who is B?  Bob?

If this is the case, then there's a party T (Trent, the trusted CA,
the server that signs the certificates for A and B).

If E doesn't have a certificate from T that they're okay, then during
the certificate validation process A will see that E doesn't have the
credential, and will close the connection before allowing any
application traffic through.  (B will do the same thing.)

-Kyle H
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