Apple signs iPhone 18 Pro sensor data for verifiable Reference Images
Apple Reference Image is an opt-in iPhone 18 Pro and Pro Max capture mode that signs sensor data at capture, develops the signed digital negative inside Private Cloud Compute and signs the resulting reference image with a composite RSA-3072 and ML-DSA-87 signature. Capture is unavailable at launch in the EU and the feature is unavailable at launch in China, while Apple exposes viewing APIs on iOS, iPadOS and macOS 27.