How easy is it to generate an image that has the same “perceptual hash” or whate... | Hacker News

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		andy_ppp on Aug 5, 2021 \| parent \| context \| favorite \| on: Apple enabling client-side CSAM scanning on iPhone... How easy is it to generate an image that has the same “perceptual hash” or whatever that are calling it? My guess is it has to be easier than cracking a non fuzzy hash? Do we know the algorithm they are using?

r721 on Aug 5, 2021 [–]

No, it's undisclosed:

>Hashes using a new and proprietary neural hashing algorithm Apple has developed, and gotten NCMEC to agree to use.

>We don’t know much about this algorithm. What if someone can make collisions?

https://twitter.com/matthew_d_green/status/14230792585163448...

andy_ppp on Aug 5, 2021 | | [–]

How absurd, insecurity through obscurity.

hda2 on Aug 5, 2021 | | [–]

> neural

Oh boy..

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