Apple on Monday published a detailed technical explanation of how its new Reference Image feature works on the iPhone 18 Pro and iPhone 18 Pro Max, laying out a system designed to cryptographically prove that a photograph was captured by…
Apple published a technical breakdown of its Reference Image system, which cryptographically signs pixel data inside the camera sensor before the OS can touch it.security.apple
The feature uses Private Cloud Compute to process the signed "digital negative" into a viewable image, with post-quantum signatures Apple says make it verifiable indefinitely.security.apple
Apple argues its approach is more secure than the industry-standard C2PA method, and uniquely preserves photographer anonymity by never tying images to a device or identity.security.apple