[tor-bugs] #19478 [Applications/Tor Browser]: File API leaks ms-resolution time

Mon Jun 27 14:12:24 UTC 2016

#19478: File API leaks ms-resolution time
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 Reporter:  arthuredelstein                      |          Owner:
     Type:  defect                               |  arthuredelstein
 Priority:  Medium                               |         Status:
Component:  Applications/Tor Browser             |  needs_review
 Severity:  Normal                               |      Milestone:
 Keywords:  tbb-fingerprinting,                  |        Version:
  TorBrowserTeam201606R                          |     Resolution:
Parent ID:                                       |  Actual Points:
 Reviewer:                                       |         Points:
                                                 |        Sponsor:
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Comment (by gk):

 Hm. `new Date.getTime()` gives me something like 1467036079100 and
 `Math.floor(new File([], "").lastModified / 100000) * 100000)`
 1467036100000 or 1467036400000 or something similar. It seems your code is
 not rounding to 100ms?

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/19478#comment:4>
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