[tor-bugs] #16769 [Tor]: add two new functions when manually calling --keygen for better management

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#16769: add two new functions when manually calling --keygen for better management
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     Reporter:  s7r      |      Owner:  nickm
         Type:  defect   |     Status:  needs_revision
     Priority:  normal   |  Milestone:  Tor: 0.2.7.x-final
    Component:  Tor      |    Version:  Tor: 0.2.7.2-alpha
   Resolution:           |   Keywords:  ed25519, relay, keys,
Actual Points:           |  TorCoreTeam201509, PostFreeze027
       Points:           |  Parent ID:  #16645
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Comment (by nickm):

 Okay, there was a huge bug where after creating an encrypted signing key,
 we'd unlink the unencrypted one... even if they had the same filename!
 That would delete the one we made.

 I bet master-key will work a little better now.

 Perhaps instead of --out a --keydir would be okay?  I'm hoping to get
 something that is more generally applicable.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16769#comment:9>
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