[onepunchedman]

Can someone please explain to me how this comparison would work? It seems so trivial to alter any image containing CP slightly such that its hash doesn't compare anymore?

[dilap]

Confusingly, it's a completely different use of the word "hash"

See here: https://en.wikipedia.org/wiki/Perceptual_hashing

The goal of a perceptual hash is to generate a number that will be the same for all "similar" looking images.

Think like what Shazam does, but in the visual domain.

[onepunchedman]

Thanks for the response, I was super confused by this part!

[sneak]

Perceptual hashes are not related to byte-level hashes.

[onepunchedman]

Yeh I must have ignored the "perceptual" part when I read it over

[bengale]

https://www.apple.com/child-safety/pdf/CSAM_Detection_Techni...

[onepunchedman]

Thanks for this! :)