Re: [tor-dev] RFC: obfs4 (Name not final)

2014-05-23 Thread Yawning Angel
On Fri, 23 May 2014 14:16:49 +0200 Philipp Winter wrote: [snippity] > > * Should obfs4proxy also have (disabled) IAT obfuscation? Adding > > it later will not require wire protocol changes. > > I don't think that inter-arrival times are a significant practical > threat at this point. In addit

Re: [tor-dev] RFC: obfs4 (Name not final)

2014-05-23 Thread Michael Rogers
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 On 23/05/14 13:16, Philipp Winter wrote: > - ScrambleSuit's framing mechanism is vulnerable to this attack: > In a nutshell, the > receiver needs to decrypt the ScrambleSuit header before it is able > t

Re: [tor-dev] RFC: obfs4 (Name not final)

2014-05-23 Thread Philipp Winter
On Wed, May 21, 2014 at 06:36:52AM +, Yawning Angel wrote: > * obfs4 always does a full handshake. ScrambleSuit style session >ticket handshakes are not supported. Even with Elligator2 mapping >taken into account, the obfs4 handshake is significantly faster, so >there is less of

[tor-dev] Pluggable transports meeting today (Friday 23rd of May 2014)

2014-05-23 Thread George Kadianakis
Hello friends, just wanted to remind you that the regular biweekly pluggable transports meeting is going to occur today at 16:00 UTC. Place is the #tor-dev IRC channel in the OFTC network. Please note that we recently *changed* the time from 17:00 to 16:00 UTC. Thanks! __