Reregister after key change?

[Scott Bennett]

     On Fri, 16 May 2008 04:11:15 +0200 tor at bitonion.net wrote:
>I seem to remember that, when I set up my tor node, the instructions 
>suggested to register the node name by sending an email to somewhere. In 
>the docs currently online I don't find this request anymore.
>
>Anyway, since I changed my onion key because of the ssl vulnerability 
>should I send another email somewhere?
>
     The onion key isn't the problem here.  tor changes onion keys every
so many days anyway and uploads a new descriptor when that happens.  It's
when you change the signing key that there is a problem because that is
the permanent key that is tied to the identity of your server in particular.
If a descriptor is sent to the authorities that has a different key for
your server, tor treats it as the descriptor for a new server that happens
to have the same nickname and IP address as the old server.  In other words,
to thinks that there are two servers claiming the same nickname.  If the
older one is marked as Named in the authorities' directories, then the new
server will likely be warned that its nickname is a duplicate of a legitimate
server and should probably be changed. 


                                  Scott Bennett, Comm. ASMELG, CFIAG
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