nanog mailing list archives

Re: Microsoft deems all DigiNotar certificates untrustworthy, releases updates


From: Christopher Morrow <morrowc.lists () gmail com>
Date: Mon, 12 Sep 2011 11:22:11 -0400

On Mon, Sep 12, 2011 at 4:39 AM,  <Valdis.Kletnieks () vt edu> wrote:
On Sun, 11 Sep 2011 22:01:47 EDT, Christopher Morrow said:
If I have a thawte cert for valdis.com on host A and one from comodo
on host B... which is the right one?

You wouldn't have 2 certs for that... I'd have *one* cert for that. And if when
you got to the IP address you were trying to reach, the cert didn't validate as
matching the hostname, you know something fishy is up.

And if you *do* have two certs for it, I'd like to talk to the bozos at
Thawte and Comodo who obviously didn't check the paperwork. ;)

this has already happened with mozilla.com, google.com, microsoft.com
.... my point was that as a user, and as a service operator, what in
today's CA world helps me know that the service operator's certificate
is what my user-client sees? some 'trust' in the fact that
thawte/comodo/verisign/cnnic didn't issue a cert for the
service-operator's service incorrectly?

I think I need a method that the service operator can use to signal to
my user-client outside the certificate itself that the certificate
#1234 is the 'right' one.


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