[tor-bugs] #3122 [Tor Client]: Write and use constant-time comparison functions

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#3122: Write and use constant-time comparison functions
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 Reporter:  rransom      |          Owner:  ioerror           
     Type:  enhancement  |         Status:  new               
 Priority:  major        |      Milestone:  Tor: 0.2.1.x-final
Component:  Tor Client   |        Version:                    
 Keywords:               |         Parent:                    
   Points:               |   Actualpoints:                    
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Comment(by nickm):

 Oh, add another step to part I. Memcmp:  "4.1.  On a case-by-case basis,
 change !tor_memneq(..) and tor_memneq(..)==0 into tor_memeq.  This will
 need to be done very carefully; it is exactly where I expect to screw up."

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/3122#comment:10>
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