[tbb-bugs] #23344 [Applications/Tor Browser]: Show country of temporary bridge used in snowflake just like with the obfs4 PT in the Torbutton

Tor Bug Tracker & Wiki blackhole at torproject.org
Fri Mar 23 22:17:58 UTC 2018


#23344: Show country of temporary bridge used in snowflake just like with the obfs4
PT in the Torbutton
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 Reporter:  cypherpunks               |          Owner:  tbb-team
     Type:  enhancement               |         Status:  new
 Priority:  Medium                    |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Normal                    |     Resolution:
 Keywords:  snowflake                 |  Actual Points:
Parent ID:                            |         Points:
 Reviewer:                            |        Sponsor:
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Comment (by dcf):

 If it worked, it wouldn't really look like this:
  * Bridge: snowflake (Italy)
  * Russia (xx.xx.xx.xx)
  * Panama (xx.xx.xx.xx)
  * Internet
 The snowflake proxy is an extra hop before the bridge. The bridge itself
 doesn't move (that's why it can have a static fingerprint). So let's say
 the bridge is in Mexico, then it would look like this:
  * Pre-bridge proxy: snowflake (Italy)
  * Bridge: snowflake (Mexico)
  * Russia (xx.xx.xx.xx)
  * Panama (xx.xx.xx.xx)
  * Internet
 It would be an interesting thing to visualize. Though like yawning said,
 the PT architecture doesn't support anything like this. tor treats the
 transport plugin as an opaque pipe, and the transport plugin doesn't even
 have a way to report ancillary information like this.

 Going further, the question of "what snowflake proxy am I using?" isn't
 well defined. For example, the transport plugin could be using two
 snowflake proxies simultaneously, and multiplexing traffic for the same
 circuit across both of them. (We don't support that now, but nothing
 precludes it.)

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/23344#comment:5>
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