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[tor-bugs] #5464 [Torflow]: Evaluate Active EigenSpeed/Hybrid Eigenspeed

#5464: Evaluate Active EigenSpeed/Hybrid Eigenspeed
-------------------------+--------------------------------------------------
 Reporter:  mikeperry    |          Owner:  mikeperry
     Type:  enhancement  |         Status:  new      
 Priority:  normal       |      Milestone:           
Component:  Torflow      |        Version:           
 Keywords:               |         Parent:  #5456    
   Points:               |   Actualpoints:           
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 EigenSpeed could provide a lot of security improvements to the Tor network
 in the face of all sorts of amplification attacks. It just sort of sucks
 because the passive version could not measure fast relays, and so we've
 never used it.

 However, an active version based on CapProbe, PacketPair, etc could
 possibly measure capacity in as little as a handful of UDP packets,
 enabling distributed active lightweight measurements. We could also blend
 in circuit failure rate information.

 As an alternative, we could also try using the passive EigenSpeed for slow
 relays and the bw authorities only for the faster ones...

 The big problem is that this is basically a research effort. We're going
 to need to try at least a couple different versions of these designs and
 compare them to each other, and then compare them to the current bandwidth
 authorities, to make sure everything is as performant and abuse tolerant
 as possible.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/5464>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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