[tor-bugs] #28634 [Core Tor/Tor]: Design a first useful padding machine (hiding client-side intro/rend circuits)

Tor Bug Tracker & Wiki blackhole at torproject.org
Sat May 11 00:00:47 UTC 2019


#28634: Design a first useful padding machine (hiding client-side intro/rend
circuits)
-------------------------------------------------+-------------------------
 Reporter:  asn                                  |          Owner:  (none)
     Type:  defect                               |         Status:
                                                 |  needs_revision
 Priority:  Very High                            |      Milestone:  Tor:
                                                 |  unspecified
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  wtf-pad, tor-relay, tor-cell,        |  Actual Points:
  padding, 041-proposed                          |
Parent ID:  #28632                               |         Points:  8
 Reviewer:  mikeperry                            |        Sponsor:
                                                 |  Sponsor2
-------------------------------------------------+-------------------------
Changes (by mikeperry):

 * status:  needs_review => needs_revision


Comment:

 This looks good! We're getting real close IMO.

 Last thing I can think of: As an extra safety mechanism, I think we should
 use the machine-specific padding limits allowed_padding_count = 20 and
 max_padding_percent = 1 on these two machines. That way we know that even
 if they go haywaire somehow, we have the padding limits to stop meltdown
 (and to log that we're hitting the limit and something is going wrong).

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/28634#comment:23>
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