[tor-bugs] #29042 [Core Tor/Tor]: Error loading private key after 0.3.5.7 upgrade

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#29042: Error loading private key after 0.3.5.7 upgrade
--------------------------+------------------------------
 Reporter:  anong         |          Owner:  (none)
     Type:  defect        |         Status:  new
 Priority:  High          |      Component:  Core Tor/Tor
  Version:  Tor: 0.3.5.7  |       Severity:  Critical
 Keywords:  tor-relay     |  Actual Points:
Parent ID:                |         Points:
 Reviewer:                |        Sponsor:
--------------------------+------------------------------
 Hi,

 I just upgraded my tor relay from 0.3.4.9 to 0.3.5.7 via the official
 debian repository. Now my relay is unable to start up:

 Jan 10 11:24:48.000 [err] Error loading private key.
 Jan 10 11:24:48.000 [err] Error initializing keys; exiting

 What can I do to fix it?

 root at DietPi:/var/lib/tor/keys# ls -lah
 total 44K
 drwx--S--- 2 tor tor 4.0K Jan  5 18:55 .
 drwx--S--- 5 tor tor 4.0K Jan 10 11:24 ..
 -rw-r--r-- 1 tor tor   64 Dec 13  2015 ed25519_master_id_public_key
 -rw-r--r-- 1 tor tor   96 Dec 13  2015 ed25519_master_id_secret_key
 -rw------- 1 tor tor  172 Dec 18 23:00 ed25519_signing_cert
 -rw------- 1 tor tor   96 Dec 18 23:00 ed25519_signing_secret_key
 -rw-r--r-- 1 tor tor  902 Nov  6  2013 secret_id_key
 -rw------- 1 tor tor  887 Jan  5 18:55 secret_onion_key
 -rw------- 1 tor tor   96 Jan  5 18:55 secret_onion_key_ntor
 -rw------- 1 tor tor   96 Dec  8 18:07 secret_onion_key_ntor.old
 -rw------- 1 tor tor  887 Dec  8 18:07 secret_onion_key.old

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/29042>
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