[tbb-bugs] #13018 [Tor Browser]: High-precision Math routines are OS fingerprintable (was: Determine if high-precision Math routines are fingerprintable)

Tor Bug Tracker & Wiki blackhole at torproject.org
Fri Oct 10 00:58:14 UTC 2014

#13018: High-precision Math routines are OS fingerprintable
     Reporter:           |      Owner:  tbb-team
  mikeperry              |     Status:  new
         Type:  task     |  Milestone:
     Priority:  normal   |    Version:
    Component:  Tor      |   Keywords:  tbb-fingerprinting-os, tbb-easy,
  Browser                |  ff31-esr, TorBrowserTeam201410Easy
   Resolution:           |  Parent ID:
Actual Points:           |
       Points:           |
Changes (by mikeperry):

 * keywords:  tbb-fingerprinting, tbb-easy, ff31-esr,
     TorBrowserTeam201410Easy => tbb-fingerprinting-os, tbb-easy, ff31-esr,


 Hrmm.. Sounds like we may need to pick a library we like and include its
 versions of these functions rather than calling out to the OS.

 I wonder why there are 32 vs 64bit differences here, though.. I guess the
 Linux versions probably use 'long' instead of something standard like
 int64_t... Bleh.

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13018#comment:11>
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