[tor-bugs] #20348 [Metrics/Censorship analysis]: Kazakhstan blocking of vanilla Tor, 2016-06
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Fri Oct 28 20:04:22 UTC 2016
#20348: Kazakhstan blocking of vanilla Tor, 2016-06
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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:
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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>
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