this post was submitted on 21 Nov 2023
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New Leica camera stops deepfakes at the shutter (spectrum.ieee.org)
submitted 1 year ago by [email protected] to c/technology
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[โ€“] [email protected] 3 points 1 year ago (1 children)

I was too tired to investigate further last night. That is the case here, sections of data are hashed and used to create the certs:

https://c2pa.org/specifications/specifications/1.3/specs/C2PA_Specification.html#_hard_bindings

Which means that there isn't a way to edit the photo and have the cert match, and also no way to compress or change the file encoding without invalidating the cert.

[โ€“] nutsack 1 points 1 year ago* (last edited 1 year ago)

so it's for jpeg shooters, basically. unfortunately the leica bodies aren't really known for producing good jpegs.