[tor-bugs] #13837 [Core Tor/Tor]: Mitigate guard discovery by pinning middle node

Tor Bug Tracker & Wiki blackhole at torproject.org
Mon Dec 4 14:47:07 UTC 2017


#13837: Mitigate guard discovery by pinning middle node
-------------------------------------------------+-------------------------
 Reporter:  asn                                  |          Owner:
                                                 |  mikeperry
     Type:  defect                               |         Status:
                                                 |  needs_revision
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.3.3.x-final
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tor-hs, tor-guard, guard-discovery-  |  Actual Points:
  prop247-controller                             |
Parent ID:  #9001                                |         Points:
 Reviewer:                                       |        Sponsor:
                                                 |  SponsorV-can
-------------------------------------------------+-------------------------

Comment (by asn):

 Furthermore, this feature seems to come with at least 3 (major) design
 changes:
 - Adds extra hops to reduce linkability.
 - Disables cannibalization.
 - Disable prev hop path restriction.

 I wonder where's the best way to document these design changes. On the
 manual page? On a spec somewhere? Not sure.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13837#comment:23>
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