Hi Eric,

> -------- Original Message --------
> Subject: [P2PSIP] Certificates in SecurityBlock
> From: Eric Rescorla <[email protected]>
> Date: Mon, June 18, 2012 12:54 pm
> To: [email protected]
> 
> 
> In principle the SecurityBlock structure is designed to work with
> certificates which are stored in the overlay and then retrieved
> at verification time. In practice, however, the certificates are
> indexed into the security block by Hash(cert) but stored in
> the overlay under subject, so you can't retrieve them from
> the overlay.
> 
> There seem to be two fixes for this:
> (1) Modify(add to?) the certificate store usage to store certs
> under the fingerprint so they can be retrieved.
> (2) Stop claiming that you can fetch the certs and just say that
> for this version you must send the certs with the message.
> 
> Is anyone interested in not sending all the certs with the message?
> If so, we should do (1). Otherwise, we should do (2).
 
We should do (2), since doing a cert fetch in the middle of a request
processing adds complexity.

If future version do (1), it will also be a good opportunity to add
the single-hop optimization I proposed long ago, in which messages
meant for directly connected peers send an empty security block,
because everything is already being done by TLS and DTLS.

Thanks

--Michael


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