[tor-bugs] #28142 [Core Tor/Tor]: Merge original WTF-PAD branch

[Tor Bug Tracker & Wiki]

#28142: Merge original WTF-PAD branch
-------------------------------------------------+-------------------------
 Reporter:  asn                                  |          Owner:
                                                 |  mikeperry
     Type:  enhancement                          |         Status:
                                                 |  needs_review
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.4.0.x-final
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  wtf-pad, tor-relay, tor-cell,        |  Actual Points:
  padding                                        |
Parent ID:  #28631                               |         Points:
 Reviewer:  asn                                  |        Sponsor:
                                                 |  Sponsor2
-------------------------------------------------+-------------------------

Comment (by asn):

 I pushed a few more commits to `adaptive_padding-final` that Riastradh
 authored to improve the prob distr codebase (it now does type checking on
 the distr macros) and fix a bug and some compilation issues.

 I'm still unsure how to handle the monotime issue because I'm not sure
 what's acceptable in terms of timing accuracy and overhead. Mike has some
 questions on IRC for you Nick.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/28142#comment:31>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online