3 ms·
The article claims that photoDNA is reversible to 26x26 images and claims that the hashes are therefore CP.
by lixtra 5y ago
The article claims that photoDNA is reversible to 26x26 images and claims that the hashes are therefore CP.
- FabHK 5y agoAh, right. But Apple is using NeuralHash, not photoDNA, right? Does that suffer the same problem?
- nabakin 5y agoWe don't know but I think there's a good chance it does. It's important to determine before release. Maybe it's possible to encrypt them in such a way, no one can access them despite being on the device and still be able to use them for comparison
- FabHK 5y agoYes, that's what the paper A Concrete-Security Analysis of the Apple PSI Protocol from UC San Diego claims: > Reciprocally, the database of CSAM photos should not be made public or become known to the user. Apple has found a way to detect and report CSAM offenders while respecting these privacy constraints. https://www.apple.com/child-safety/pdf/Alternative_Security_Proof_of_Apple_PSI_System_Mihir_Bellare.pdf https://www.apple.com/child-safety/pdf/Alternative_Security_...