Apple Reference Image Signs Photos at the Sensor, Moving Provenance Trust away from C2PA

Steef-Jan Wiggers — Thu, 24 Sep 2026 05:50:00 GMT

Apple has published the design of Reference Image, an iPhone 18 Pro camera mode that signs pixel data at the sensor and develops it in Private Cloud Compute under an Apple signature. Developers on Hacker News and Reddit challenged what it proves, raising photographing a screen, the anonymity guarantee's dependence on Apple's cloud, and whether identity verification is the right use case.

By Steef-Jan Wiggers

Cloudflare Measures Origin TLS Preferences, Cutting Handshake Retries from 52% to 3.7%

Steef-Jan Wiggers — Sun, 20 Sep 2026 08:15:00 GMT

Cloudflare has replaced its static X25519 guess for origin TLS handshakes with per-origin measurement. HelloRetryRequests on scanned origins fell from roughly 52% to 3.7%, removing over 150 ms from p90 latency. Post-quantum connections completing in one round trip rose from 0% to 99.2%, though only 12.8% of origins support it.

By Steef-Jan Wiggers

InfoQ - Cryptography - News

Apple Reference Image Signs Photos at the Sensor, Moving Provenance Trust away from C2PA

Cloudflare Measures Origin TLS Preferences, Cutting Handshake Retries from 52% to 3.7%