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Yes, it's encrypted, but part of this anti-CSAM strategy is a threshold encryption scheme that allows Apple to decrypt photos if a certain number of them have s
by topynate 5y ago
Yes, it's encrypted, but part of this anti-CSAM strategy is a threshold encryption scheme that allows Apple to decrypt photos if a certain number of them have suspicious hashes.
- Kalium 5y agoApple having any kind of ability to decrypt user contents is disconcerting. It means they can be subpoenaed for that information.
- heavyset_go 5y ago> It means they can be subpoenaed for that information. They regularly are, and they regularly give up customer data in order to comply with subpeonas[1]. They give up customer data in response to government requests for 150,000 users/accounts a year[1]. [1] https://www.apple.com/legal/transparency/us.html https://www.apple.com/legal/transparency/us.html
- bbatsell 5y agoNo, the threshold encryption only allows for the 30+ cryptographic “vouchers” to be unlocked, which contain details about the hash matching as well as a “visual derivative” of the image. We don’t know any details about the visual derivative.
- sudosysgen 5y agoIm guessing the visual derivative is a difference of sorts between the image and the CSAM? Of course not sure.
- HALtheWise 5y agoNo, since apple _definitely_ isn't sending CSAM photos to your phone so they can be differ. Most likely, the visual derivative is a thumbnail or blurred version of the image.