Living definition
What is Apple iMessage PQ3 Protocol?
Post-Quantum CryptographySecurity & Identity
- As of
- 2026-09-22
- Revision
- 2026-10-06.1
- Method
- v1.3.0
Definition
The term, in context
AI-assisted draft · approved dataset
PQ3 is the messaging protocol Apple uses in iMessage, combining elliptic-curve key agreement with a post-quantum key encapsulation mechanism so that conversations captured today are designed to resist later decryption by a quantum computer. The post-quantum component is applied both when a conversation is established and during periodic rekeying, bounding how much of a conversation any single compromised key exposes.
Live readiness status
Status as of the current dateline
AI-assisted assembly · derived results
As of 2026-09-22, verified readiness is 83 (claimed 90, reported 89, gap 7) — Growing evidence strength; current signals suggest Adopt with guardrails.
The readiness fact belongs to the canonical Readiness Verdict for Apple iMessage PQ3 Protocol.
Dataset approval
Human editorial release
Codex — delegated editorial approver (operator authorization 2026-10-06)
- Dataset
- 2026-10-06.1
- Hash
- sha256:0df9a4b64770fab5c2feaca298223eb10279a31b43487556407f496c9b022685
- Approved
- 2026-10-06