[tor-bugs] #20552 [Core Tor/Tor]: Advertise support for ed25519 link handshake using subprotocol versions

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#20552: Advertise support for ed25519 link handshake using subprotocol versions
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 Reporter:  nickm              |          Owner:
     Type:  enhancement        |         Status:  needs_review
 Priority:  Medium             |      Milestone:  Tor: 0.3.0.x-final
Component:  Core Tor/Tor       |        Version:
 Severity:  Normal             |     Resolution:
 Keywords:  TorCoreTeam201611  |  Actual Points:  0
Parent ID:  #15054             |         Points:  .5
 Reviewer:                     |        Sponsor:  SponsorU-must
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Changes (by nickm):

 * status:  new => needs_review
 * keywords:   => TorCoreTeam201611
 * actualpoints:   => 0


Comment:

 My branch `feature20552` has the code here.  Much easier than I thought.
 Need to think about how this works for bridges, though.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20552#comment:2>
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