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I always thought they basically just down-sampled it to 100x100 16 colors and hashed that - so the hash survives most changes.
But they don't publish how they do this, because as soon as it's published, it can be trivially worked around.
The whole thing is so dumb, I imagine the owner of the company that does it is probably in the Epstein files. So basically he's making hashes of the files that he himself is creating.
But they don't publish how they do this, because as soon as it's published, it can be trivially worked around.
The whole thing is so dumb, I imagine the owner of the company that does it is probably in the Epstein files. So basically he's making hashes of the files that he himself is creating.
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@cjd @caekislove I still think it's a bad idea because regardless of how it is hashed or subhashed, collisions are inevitable and at least one person has been falsely accused of possessing CP because he had a file that was in collision with one of the hashes.
https://www.eff.org/deeplinks/2022/08/googles-scans-private-photos-led-false-accusations-child-abuse
Also the government can no longer really pretend to care about children or going after child molesters, so the whole thing is a stupid charade.