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A comment on MS Paint and Photos inivisibly watermark even locally generated output with GUID. Parent comment
> build their own photo-sensor simulator and plug _that_ in to the camera's motherboard to feed it a "real" image?
Already been done!
https://hackerfactor.com/blog/index.php?/archives/1102-C2PA-...
TL;DR: Strong cryptography over untrusted data does not make the data more trustworthy.
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> build their own photo-sensor simulator and plug _that_ in to the camera's motherboard to feed it a "real" image?
Already been done!
https://hackerfactor.com/blog/index.php?/archives/1102-C2PA-...
TL;DR: Strong cryptography over untrusted data does not make the data more trustworthy.