[tor-bugs] #3202 [Pluggable transport]: shared secret support in obfs2

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#3202: shared secret support in obfs2
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 Reporter:  asn                  |          Owner:  asn
     Type:  defect               |         Status:  new
 Priority:  normal               |      Milestone:     
Component:  Pluggable transport  |        Version:     
 Keywords:                       |         Parent:     
   Points:                       |   Actualpoints:     
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 I coded (well, it was already coded but I made it functional) support for
 shared secrets in my shared_secret obfsproxy branch.

 Some things that I don't know if I like or not:
 * I currently set the shared secret per-connection, instead of setting the
 shared secret per-protocol on startup.
 * I created a protocol_params_t struct that contains protocol parameters
 (eg, if we are the initiator, shared secret, etc.). It gets passed to
 proto_new() when we are creating a protocol object for every connection.
 Maybe in the future we will need to put more stuff in there, maybe not.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/3202>
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