[tor-bugs] #18320 [Core Tor/Tor]: Clear old entries from the key-pinning journal file

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#18320: Clear old entries from the key-pinning journal file
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 Reporter:  teor                        |          Owner:  andrea
     Type:  defect                      |         Status:  assigned
 Priority:  Medium                      |      Milestone:  Tor:
Component:  Core Tor/Tor                |  0.2.9.x-final
 Severity:  Normal                      |        Version:
 Keywords:  tor-dos, TorCoreTeam201606  |     Resolution:
Parent ID:  #17293                      |  Actual Points:
 Reviewer:                              |         Points:  3
                                        |        Sponsor:  SponsorU-can
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Comment (by andrea):

 Just why are relays switching back between multiple ed25519 keys with the
 same RSA key?  I'm going to go ahead and implement periodic pruning of
 duplicates from the journal file, but I think nickm's "maybe we should
 remember the conflict" comment hinges on whether this is a sign of a bug
 somewhere else we should fix, or something we should accommodate here.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18320#comment:12>
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