[tor-bugs] #10402 [Tor]: Force disable use of RDRAND in OpenSSL when HardwareAccel is enabled

Tor Bug Tracker & Wiki blackhole at torproject.org
Sat Dec 14 14:07:24 UTC 2013


#10402: Force disable use of RDRAND in OpenSSL when HardwareAccel is enabled
------------------------+-----------------
     Reporter:  anon    |      Owner:
         Type:  defect  |     Status:  new
     Priority:  major   |  Milestone:
    Component:  Tor     |    Version:
   Resolution:          |   Keywords:
Actual Points:          |  Parent ID:
       Points:          |
------------------------+-----------------

Comment (by anon):

 Patches here:
 https://peertech.org/dist/tor-0.2.4.19-rdrand-disable.patch
 https://peertech.org/dist/tor-0.2.5.1-rdrand-disable.patch
 https://peertech.org/dist/tor-latest-rdrand-disable.patch

 If you have a Sandy Bridge, Ivy Bridge, or other recent Intel CPU with
 RDRAND, can you try building Tor against openssl-1.0.1e and HardwareAccel
 1 set in config?

 If you see a log message:
 {{{
  ... "OpenSSL is using RDRAND by default. Attempting to force disable."
 }}}

 please post the results of the following "Using OpenSSL engine ... for
 RAND" statement to confirm.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/10402#comment:1>
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