#20348: Kazakhstan blocking of vanilla Tor, 2016-06 -----------------------------------------+--------------------- Reporter: dcf | Owner: Type: project | Status: new Priority: Medium | Milestone: Component: Metrics/Censorship analysis | Version: Severity: Normal | Resolution: Keywords: censorship block kz | Actual Points: Parent ID: | Points: Reviewer: | Sponsor: -----------------------------------------+---------------------
Comment (by cypherpunks): First segment used as source for entropy test to decide if stat analysis for stream need. But it's somehow too complex. Tested with a first segment of 256 bytes. For non modified obfs4 it triggers detection reliably. If to replace random padding with zeroes (segment contains elligator-2 and zeroes then) then no detection happens. But if to keep size of segment (still with elligator-2 as non zero bytes only) to mss then detection happens (thought not so reliably). -- Ticket URL: <https://troodi.torproject.org/projects/tor/ticket/20348#comment:13> Tor Bug Tracker & Wiki <https://trac.torproject.org/> The Tor Project: anonymity online _______________________________________________ tor-bugs mailing list tor-bugs@lists.torproject.org https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-bugs