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Re: [tor-bugs] #26288 [Core Tor/Tor]: prop289: Implement authenticated SENDME



#26288: prop289: Implement authenticated SENDME
-------------------------------------------------+-------------------------
 Reporter:  dgoulet                              |          Owner:  dgoulet
     Type:  enhancement                          |         Status:
                                                 |  needs_review
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.4.1.x-final
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  prop289, 035-roadmap-master, 035     |  Actual Points:
  -triaged-in-20180711, prop289-assigned-        |
  sponsor-v, 041-proposed-on-roadmap, network-   |
  team-roadmap-2019-Q1Q2                         |
Parent ID:                                       |         Points:  21
 Reviewer:  ahf                                  |        Sponsor:
                                                 |  SponsorV
-------------------------------------------------+-------------------------

Comment (by dgoulet):

 Replying to [comment:13 teor]:
 > Replying to [comment:12 dgoulet]:
 > >
 > > ...
 > >
 > > So a piece missing is the integration with protover. I'm not entirely
 sure how to proceed code wise because what I've tried with `SendMe=1` and
 it was not working. Basically, what I need is a confirmation that what is
 proposed makes sense and is doable that way. If so, I'll push the commit
 that implements this and will ask nickm to hunt down why it is failing.
 >
 > SENDMEs are part of circuits and streams, so we could increment the
 Relay protocol version:

 Hmmmm the only reason I created a `SendMe` here is because it would have
 made `Relay` a bit messier... but I guess overall that is what we've
 designed Protover to support anyway:

 We already have a SENDME version (0) that all tor supports. And now we
 want to support v1. In order for protover to "stop" the use of v0, we then
 need to introduce two new versions to `Relay` which right now would be 3
 and 4.

 Then to remove the usage of v0, we would advertise `Relay=1-2,4` which
 should effectively exit() every client that does NOT support v1 that is
 `Relay=4`.

 Doable!

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/26288#comment:14>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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