Cryptographer Matthew Green: Apple's camera photo provenance system is too fragile
matthew_d_green · x · 2026-09-16
Cryptographer Matthew Green criticizes Apple's Reference Image provenance system as highly fragile: with millions of cameras, if only a small number are compromised, fakers can forge unlimited signed photos into the commons. For the journalist use case, revocation is hard when you can't tell which camera signed a fake. He sees real value only in low-value daily use.
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