[tor-bugs] #5488 [Analysis]: Write Internet drafts for one or two TLS features to improve its traffic-analysis resistance

Tor Bug Tracker & Wiki torproject-admin at torproject.org
Thu Apr 26 17:14:41 UTC 2012


#5488: Write Internet drafts for one or two TLS features to improve its traffic-
analysis resistance
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 Reporter:  karsten   |          Owner:  nickm                      
     Type:  project   |         Status:  new                        
 Priority:  normal    |      Milestone:  Sponsor F: November 1, 2012
Component:  Analysis  |        Version:                             
 Keywords:            |         Parent:                             
   Points:            |   Actualpoints:                             
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Comment(by mikeperry):

 For our records, Marsh is lobbying for replacing the plaintext NPN that
 Google currently uses with a DH handshake as part of ClientHello and
 ServerHello. The server would use the DH key to encrypt the cert chain for
 the client in the ServerHello reply itself. IUC, the client would then put
 the NPN bits as part of its Finished message, also encrypted with the key.

 So they seem to be totally open to redoing the TLS handshake to provide
 less data on the wire for blocking. I think the server cert chain will be
 a major issue for us, unless we want to do gymnastics like providing fake
 unused certs, so the plan seems like a step in the right direction to
 me...

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/5488#comment:7>
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