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this post was submitted on 27 Oct 2024
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Eventually, we will just have to accept that photographic proof is no longer proof.
There are ways that you could guarantee an image is valid. You would need a hardware security module inside the camera, which signs a hash of the picture with its own built-in security key that can't be extracted and a serial number that it generates. That can prove that an image came from a particular camera, and if you change even one pixel of that image the signature won't match anymore. I don't see this happening anytime soon. Not mainstream at least. There are one or two camera manufacturers that offer this as a feature, but it's not on things like surveillance cameras or cell phones nor will it be anytime soon.
True, sooner or later there might be ways to make sure that a picture or video are digitally signed and probably it would be very hard to crack, but theoretically a fake video might still pass for real (though it would require a lot of resources to make that happen)
More likely, most of the sources that produce photos and videos would not be using the digital signatures. Professional cameras for journalists probably would have the signature chip. Cheapo Chinese surveillance cameras? Unlikely.