[tor-bugs] #9812 [Tor]: Crypto error in Release 0.2.4.17-rc non-exit Relay

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#9812: Crypto error in Release 0.2.4.17-rc non-exit Relay
----------------------------+----------------------------------
 Reporter:  LoneRanger1012  |          Owner:
     Type:  defect          |         Status:  new
 Priority:  major           |      Milestone:
Component:  Tor             |        Version:  Tor: 0.2.4.17-rc
 Keywords:                  |  Actual Points:
Parent ID:                  |         Points:
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 My relay that has been running release 0.2.4.17-rc for several day now
 has become saturated with what I would consider 'noise' - namely a huge
 amount of handshake activity.  It does respond downward to lowereing the
 bandwidth setting, but the bandwidth graph is nearly flat.  Now I have
 just noticed two crypto errors in the message log.

 Sep 23 14:17:32.902 [Notice] Circuit handshake stats since last time:
 224326/224887 TAP, 40/40 NTor.
 Sep 23 15:17:32.999 [Notice] Circuit handshake stats since last time:
 224169/225104 TAP, 77/77 NTor.
 Sep 23 16:17:32.016 [Notice] Circuit handshake stats since last time:
 224655/225333 TAP, 63/63 NTor.
 Sep 23 16:50:14.883 [Warning] crypto error while checking RSA signature:
 block type is not 01 (in rsa routines:RSA_padding_check_PKCS1_type_1)
 Sep 23 16:50:14.883 [Warning] crypto error while checking RSA signature:
 padding check failed (in rsa routines:RSA_EAY_PUBLIC_DECRYPT)
 Sep 23 17:17:32.782 [Notice] Circuit handshake stats since last time:
 222538/222987 TAP, 14/14 NTor.
 Sep 23 17:36:03.704 [Warning] eventdns: All nameservers have failed
 Sep 23 17:36:03.829 [Notice] eventdns: Nameserver 192.168.1.254:53 is
 back up

 My relay is running from 108.214.60.211 and in the last 2 days it has
 started eating up to 17 % of my CPU time where it previously used less
 than 10 %.  Handshake counts are up substantially more than an order of
 magnitude.
 I rebooted out of an abundance of caution, and the cpu usage is now below
 5 % but the handshake numbers is "Sep 23 19:25:12.621 [Notice] Circuit
 handshake stats since last time: 131567/132269 TAP, 14/14 NTor.", after
 rebooting.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/9812>
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