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I think there has to be some kind of cryptographic signature solution, like "The BBC verifies that this image is authentic".
by chpatrick 3y ago
I think there has to be some kind of cryptographic signature solution, like "The BBC verifies that this image is authentic".
- mrshadowgoose 3y agoWe already have most of the required cryptographic primitives for this. PKI, trusted timestamping, secure hardware with remote attestation are some of the necessary building blocks. All that's really missing are camera sensors with built-in cryptography. And societal care. Our society seems to really like to whine about "the danger of deepfake images", but our actions reveal that we don't really give a crap, as we could solve this problem today if we really wanted to.
- chpatrick 3y agoI think it would also need to have some kind of embedded version control from camera through Photoshop so you know what was changed.
- mejutoco 3y agoIf you trust how the bbc tells the story, you also trust them when they say the image is true. Not a technical problem IMO.
- chpatrick 3y agoSure but then the image gets copied shared reposted etc. If the images had cryptographic provenance included, sites like Reddit or Twitter could verify and display that, or lack thereof. I would use the same infrastructure as HTTPS, so an image could be signed by bbc.co.uk. That way if you trust that domain you could trust the document, wherever you come across it.
- mejutoco 3y agoBut why? If it is on bbc s website bbc is already saying it is good. Same for any other media. The technical approach is interesting but not needed IMO in this case.
- chpatrick 3y agoLike I said, because you might come across the image on Reddit or Twitter but have no idea if it's real or not.