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[tor-bugs] #30541 [Applications/Tor Browser]: webgl readPixels FP entropy
#30541: webgl readPixels FP entropy
-------------------------------------+-------------------------------------
Reporter: Thorin | Owner: tbb-team
Type: defect | Status: new
Priority: Medium | Component: Applications/Tor
| Browser
Version: | Severity: Normal
Keywords: tbb-fingerprinting, | Actual Points:
tbb-fingerprinting-os |
Parent ID: | Points:
Reviewer: | Sponsor:
-------------------------------------+-------------------------------------
**readPixels** is not covered by RFP (see
https://bugzilla.mozilla.org/show_bug.cgi?id=1428034 ) and using my tests
[1], on windows I get entropy. Not sure if unique or just OS.
- Windows 7 32bit
`2ba61e7e8e370fdbcefb79456e7e944b060f34289af33732aa6eb75af61ff06c`
- Windows 7 64bit
`ac9aa378cd16219ecbcb6ec46b57d8a484ac8ad61cbe63c810b40fb2c741e7f3`
- Windows10 64bit
`c4ef81818ccaca2c4933f63c45bf5ffaaa7f2233f2761e3c6ba14a9e5cb82c25`
It seems to be consistent on Linux, and Mac i have no idea: here's some
data
- Mint Cinnamon 32/64bit `not supported`
- Ubuntu GNOME
`5abc446cce2558be83bfe60baeb6dc7ff2a17635057c4612fe835649e7c77329`
- Debian GNOME
`5abc446cce2558be83bfe60baeb6dc7ff2a17635057c4612fe835649e7c77329`
- Mac 10.14
`96f2538daa8a0a180f77a13d80ad455a75ae17c5495ce90fa4fd4267cbfd5210`
So besides windows OS entropy, theres at least two buckets for Linux?
gk said
> Interestingly, I get your macOS one on one of my Linux boxes.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30541>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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