[tor-dev] Does TLS round-trip optimization apply do Tor?

Zack Weinberg zackw at panix.com
Tue Dec 24 17:53:09 UTC 2013

On Tue, Dec 24, 2013 at 3:46 AM, Benedikt Gollatz
<ben at differentialschokolade.org> wrote:
> Tor uses TLS only for node-to-node transport encryption. Any
> improvements to Tor's TLS behaviour would therefore only result in
> occasionally faster circuit building times. This may be nice to have,
> but because Tor builds circuits preemptively and therefore can switch
> circuits quickly, I doubt that this is an actual bottleneck in the system.

If we're going to mess with the node-to-node encryption Tor uses,
switching to a transport that can deliver cells out of order seems
like it would have considerably more upside for the effort.


More information about the tor-dev mailing list