[tor-project] Anti-censorship meeting notes, 16 Apr 2020

Philipp Winter phw at torproject.org
Thu Apr 16 19:17:47 UTC 2020

Hi all,

Here are our meeting minutes:


And here is our meeting pad:

Anti-censorship work meeting pad

Next meeting: Thursday April 16th 18:00 UTC

Weekly meetings, every Thursday at 18:00 UTC, in #tor-meeting at OFTC (channel is logged while meetings are in progress).

== Goal of this meeting ==

Weekly checkin about the status of anti-censorship work at Tor.
Coordinate collaboration between people/teams on anti-censorship at Tor.

== Links to Useful documents ==

    * Our anti-censorship roadmap: https://gitlab.torproject.org/torproject/anti-censorship/roadmap/boards
        * Our roadmap consists of a subset of trac tickets. For 2020 Q1, the trac keyword is anti-censorship-roadmap-2020Q1
        * Next planning session: last week of April
    * The anti-censorship team's wiki page: https://trac.torproject.org/projects/tor/wiki/org/teams/AntiCensorshipTeam
    * Past meeting notes can be found at: https://lists.torproject.org/pipermail/tor-project/
    * GetTor's roadmap: https://gitlab.torproject.org/groups/torproject/anti-censorship/gettor-project/-/boards
    * Tickets that need reviews:  from sponsors we are working on:
        * https://trac.torproject.org/projects/tor/wiki/org/sponsors/Sponsor30
        * https://trac.torproject.org/projects/tor/wiki/org/sponsors/Sponsor28
    * Anti-censorship related tickets that we want other teams to fix:
        * https://pad.riseup.net/p/tor-anti-censorship-tickets-keep

---  April 16th 2020   --

== Announcements ==


== Discussion ==

    * We have a new respository for the snowflake webextension repo: https://gitweb.torproject.org/snowflake-webext.git/
        * Do we want this in pluggable-transports/ ?
            * result of discussion: yes, under pluggable-transports/.

== Actions ==


== Interesting links ==

    * http://loup-vaillant.fr/articles/implementing-elligator
        * Relates to the obfs4/extra25519 deprecation. "There I was, implementing my own crypto, with nothing to compare to. No reference implementation, no test vectors, nothing. For use cases that are best justified when the stakes are frighteningly high."

== Reading group ==

    * We will discuss "SymTCP: Eluding Stateful Deep Packet Inspection with Automated Discrepancy Discovery" on April 16
        * https://censorbib.nymity.ch/#Wang2020a
        * Questions to ask and goals to have:
            * What aspects of the paper are questionable?
            * Are there immediate actions we can take based on this work?
            * Are there long-term actions we can take based on this work?
            * Is there future work that we want to call out, in hopes that others will pick it up?

== Updates ==

    This week:
        - What you worked on this week.
    Next week:
        - What you are planning to work on next week (related to anti-censorship work).
    Help with:
         - Something you may need help with.

  This week (2020-04-16):
        * Created pull request for OONI to remove noisebridge01.
        * Rebased and merged #17548 (removed PGP support from BridgeDB).
        * Wrote monthly team report.
        * Followed CovidCon stream a bit.
        * Merged docker obfs4 bridge patch.
        * More work on #32740 (BridgeDB feedback loop).  Reached out to Censored Planet and ICLab for feedback.
            * https://gitlab.torproject.org/torproject/anti-censorship/wolpertinger
        * Closed #33464 after Yawning took care of missing dependency in his obfs4 repo.
        * GSoC reviews and organisation.
  Next week:
  Help with:

Gaba: ()
   Last week (2020-03-30):
        * not much related to anti-censorship
    This week (planned):
        * anti-censorship retrospective

cecylia (cohosh): last updated 2020-04-16
Last week:
    - created ticket to track down very old GetTor mirrors (#33893)
    - reviewed TurboTunnel merge branch (#33745)
    - reviewed BridgeDB GPG patch (#17548)
    - cleaned up old GetTor scripts (#32912)
    - sorted out snowflake repository changes (#33593)
    - implemented a partial solution for snowflake proxy failures (#33666)
    - gave feedback on OONI/bridgedb feedback loop (#32740)
    - reviewed GSoC proposals
This week:
    - Resume obfs4 tests (#31701, #32657)
    - see if i can help push snowflake for android along (#28672)
    - set up some kind of NAT topology testing suite (#25595)
    - look into setting up a TURN server (#25596)
    - take a look at reviving the twitter responder in GetTor (#33036)
    - look at old GetTor mirrors (#33893)
    - review of #33365
Needs help with:
    - review of GetTor scripts clean up (#32912) hiro?
    - review of snowflake repository changes (#33593)
    - review of snowflake proxy failure solution (#33666)

juggy :

    This week:
        - Researched XUL and dug into previous conversations around integrating Tor Launcher into Tor Browser, why porting to Web Extensions might not work, etc.
    Next week:
        - Implement audio captchas in moat, figure out how to reduce audio captcha request size
        - Keep studying BridgeDB
    Help with:

arlolra: 2020-04-16
    Last week:
        - start on #33365
        - review of #33593
    Next week:
        - follow ups to #33365
        - review of #33666
        - start on #31201
    Help with:
        - review of #33365

dcf: 2020-04-16
    Last week:
        - made a snowflake turbotunnel merge branch and Tor Browser packages (#33745)
        - archived WIP snowflake turbotunnel packages
            - https://archive.org/details/tor_project_archives?and%5B%5D=subject%3Asnowflake+subject%3A%28Turbo+Tunnel%29
    Next week:
        - respond to feedback on turbotunnel merge branch (#33745)
        - branch for snowflake turbotunnel merge into Tor Browser
            - remember uniuri is not needed anymore too
        - share access to the snowflake broker CDN configuration (#30510)
    Help with:

cjb: 2020-04-16
   Last week:
    - gonna be afk with kids
   Next week:
   Help with:

    Last week:
        - Worked on #33835 and submitted patch
    Next week:
        - Implement feedback on #33835
        - Check out check.torproject's code base
    Help with:

catalyst: 2020-04-16
    last week:
        - more work on #5304 (PT outbound bind address)
        - started looking at #29128 (assemble bridge line)
this week:
        - more background research and work on s28/s30 tickets

thymbahutymba: 2020-04-02
    Last week:
        - CI/CD pipeline for multiarch docker images, which has a problem
          with the apt tor version even though the apt repository have been
          changed into the Dockerfile.
    Next week:
    Help with:

Hiro: (last updated before 2020-01-09)
    Started restoring Twitter Responder.
        When retrieving tweets I need to check for new tweets only otherwise Gettor will end up responding to old back log and already answered messages. <-- is this #27330 ?
    Next Week:
      - Work on gettor specs <-- Is this #3781?
      - More with review of strings and website content and translation

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