[tor-bugs] #8089 [Stegotorus]: Implement the handshake and key exchange as described in the paper

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#8089: Implement the handshake and key exchange as described in the paper
------------------------+---------------------------------------------------
 Reporter:  vmon        |          Owner:  zwol 
     Type:  defect      |         Status:  new  
 Priority:  critical    |      Milestone:       
Component:  Stegotorus  |        Version:       
 Keywords:              |         Parent:  #8099
   Points:              |   Actualpoints:       
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Changes (by rransom):

  * parent:  => #8099


Comment:

 Replying to [comment:1 rransom]:
 > You can use Curve25519 instead of Möller's binary curve -- 3 is a
 generator of the ‘twist’ group; 4 generates the main group.

 By the way, someone else should check that there are points with these x
 coordinates which have the right order before they're baked into a
 protocol.  (I'm quite sure that the approach I used (check that (n/2)*P is
 either the point of order 1 or the point of order 2, and that (n/4)*P
 isn't) is correct, but if it isn't correct, it's better to find out before
 the system is deployed.)

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/8089#comment:5>
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