[tor-bugs] #16790 [Tor]: Tor should reload keys from disk when receiving a SIGHUP

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#16790: Tor should reload keys from disk when receiving a SIGHUP
-------------------------------------------------+-------------------------
 Reporter:  s7r                                  |          Owner:
     Type:  defect                               |         Status:  new
 Priority:  normal                               |      Milestone:  Tor:
Component:  Tor                                  |  0.2.7.x-final
 Keywords:  TorCoreTeam201508, ed25519,          |        Version:  Tor:
  identity keys                                  |  0.2.7.2-alpha
Parent ID:                                       |  Actual Points:
                                                 |         Points:
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 When running as a relay and receiving a HUP signal (reload) Tor should
 reload and validate keys from disk again. It would do the same validation
 operations related to ed25519 identity keys as when started normally.

 This way, an operator can generate and move the new medium signing key and
 certificate to $datadirectory/keys and easily do a 'service tor reload'.

 Change should be applied to ed25519_keygen branch. At this time,
 0.2.7.2-alpha doesn't do the correct operations related to ed25519
 identity keys at startup.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16790>
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