4 ms·

This would be bizarre - wouldn't this mean that Apple are essentially shipping illegal images with their OS? (Subject to some as yet unknown decoder)

• bruce343434 5y ago
  With the right algorithm you can turn any certain string of bits into a certain other string of bits. So is the image in the data, or is it really in the algorithm?
  • franga2000 5y ago
    If the decoder was "trained" on and only works with predictable data, then it might be the algorithm that's illegal, but if a completely new illegal image is created, hashed, fed into the decoder and the decoder produces a valid illegal image, then the illegal data must be in the input, not the algorithm. This is basically rule 1 of testing neural networks: if the testing data is different from the training data and the results are still correct, your network is "reading" the data correctly and not just memorising a list of known values. I guess this means you'd also need to prove that the decoder doesn't turn most hashes of non-illegal images into illegal images, but if you also did that, you'd have a pretty strong case that the illegal data is in the hash.