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It would be trivial to filter out any kind of watermarking. Watermarks get photoshopped out of images all the time. On the other hand, if there was some way to
by Retr0spectrum 10y ago
It would be trivial to filter out any kind of watermarking. Watermarks get photoshopped out of images all the time.
On the other hand, if there was some way to add a watermark that was also a cryptographic signature, you could actually prevent editing.
I have no idea how you would implement such a signature system though.
- bradbeattie 10y agoCryptography sign the image sans the least significant bits, then add the signature in said position: http://www.lia.deis.unibo.it/Courses/RetiDiCalcolatori/Progetti98/Fortini/lsb.html http://www.lia.deis.unibo.it/Courses/RetiDiCalcolatori/Proge... Shouldn't be too noticeable. A similar approach should work for audio too.