[sensors] Round off Ambient Light Sensor readouts to the nearest 50 Lux. #19467
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There have been some concerns regarding the precision of readouts from the Ambient Light Sensor. To decrease the entropy, we are rounding off the illuminance value to the nearest 50 Lux to mitigate the known attack vectors as summarized in [1]. [1] w3c/ambient-light#13 (comment) This CL is based on https://chromium-review.googlesource.com/c/chromium/src/+/1695412 by Rijubrata Bhaumik and myself. Bug: 642731, 606766 Change-Id: I85449bdb835e8486b080fc269938b6c96f000c2a Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1834346 Reviewed-by: Reilly Grant <[email protected]> Reviewed-by: Kentaro Hara <[email protected]> Commit-Queue: Raphael Kubo da Costa <[email protected]> Cr-Commit-Position: refs/heads/master@{#705486}
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There have been some concerns regarding the precision of readouts from the
Ambient Light Sensor. To decrease the entropy, we are rounding off the
illuminance value to the nearest 50 Lux to mitigate the known attack
vectors as summarized in [1].
[1] w3c/ambient-light#13 (comment)
This CL is based on
https://chromium-review.googlesource.com/c/chromium/src/+/1695412 by
Rijubrata Bhaumik and myself.
Bug: 642731, 606766
Change-Id: I85449bdb835e8486b080fc269938b6c96f000c2a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1834346
Reviewed-by: Reilly Grant <[email protected]>
Reviewed-by: Kentaro Hara <[email protected]>
Commit-Queue: Raphael Kubo da Costa <[email protected]>
Cr-Commit-Position: refs/heads/master@{#705486}