#1517: Provide JS with reduced time precision -------------------------------------------------+------------------------- Reporter: mikeperry | Owner: (none) Type: enhancement | Status: closed Priority: High | Milestone: Component: Applications/Tor Browser | Version: Severity: | Resolution: fixed Keywords: backport-to-mozilla, tbb-torbutton, | Actual Points: tbb-fingerprinting-time-highres, ff38-esr, | TorBrowserTeam201505R, PearlCrescent201505R | Parent ID: | Points: 10 -------------------------------------------------+-------------------------
Comment (by Thorin): Replying to [comment:32 mikeperry]: > I looked into this more, and noticed one case where ToSeconds() was exposed to content. AnimationFrame events have an elapsedTime field. I truncated that timestamp to millisecond accuracy (though in reality, the timestamps were varying by as much as 20ms for me). Hi Mike ... I'm 4 years late to the party... but I'm doing some "work" on some current (and open / unpatched) timing attacks - and the reason AFAIK is that 60fps = 16ms -- Ticket URL: <https://trac.torproject.org/projects/tor/ticket/1517#comment:33> Tor Bug Tracker & Wiki <https://trac.torproject.org/> The Tor Project: anonymity online
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