[tor-bugs] #22029 [Core Tor/Tor]: Allow ed25519 keys to be banned in the approved-routers file

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#22029: Allow ed25519 keys to be banned in the approved-routers file
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 Reporter:  teor                                 |          Owner:  neel
     Type:  enhancement                          |         Status:
                                                 |  assigned
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  unspecified
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  034-triage-20180328,                 |  Actual Points:
  034-removed-20180328                           |
Parent ID:                                       |         Points:  1
 Reviewer:                                       |        Sponsor:
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Comment (by neel):

 Thank you for your responses, nickm!

 I do have a few more questions, however:

 >I think it should just store the ed25519 keys, and look up by the ed25519
 key.

 Does that mean something like `authdir_config_t` should be done for
 ed25519 (even if the digests are stored as a union), and then introduce a
 function like `dirserv_get_status_impl()` that takes in ed25519 keys. And
 then I should make `dirserv_router_get_status()` look at ed25519 keys as
 well?

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22029#comment:12>
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