floofloof@lemmy.ca to Technology@lemmy.worldEnglish · 10 months agoNew Leica camera stops deepfakes at the shutterspectrum.ieee.orgexternal-linkmessage-square51fedilinkarrow-up1168arrow-down115
arrow-up1153arrow-down1external-linkNew Leica camera stops deepfakes at the shutterspectrum.ieee.orgfloofloof@lemmy.ca to Technology@lemmy.worldEnglish · 10 months agomessage-square51fedilink
minus-square∟⊔⊤∦∣≶@lemmy.nzlinkfedilinkEnglisharrow-up3·10 months agoI 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.
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.