2 ms·

This has already been a thing for quite a while and all the major camera manufacturers have or are working on some solution for cryptographic provenance. https

• tenebrisalietum 3y ago
  Betting it'll be something like Cinavia, but for images and where the embedded data is a key instead of just a simple 1,2,3,4 code. With high color depths, such as greater than 8 bit, there's probably enough "dataspace" to embed data somehow (e.g. imagine embedding a data stream in a band above 20KHz for audio, it can be part of a 22KHz WAV file, for example, but won't be heard at all). The encoding wouldn't survive the situation where a picture is taken of a picture at a lower color depth, but that's probably OK.
  • ssl-3 3y ago
    What you describe is called steganography. It's a very old technique, and the implications in the [lossy] digital realm are reasonably well-understood. Here's some code that can be played with that relates to steganography in images: https://github.com/RoliSoft/Steganography/tree/master https://github.com/RoliSoft/Steganography/tree/master