Living definition
What is Chrome Default Hybrid Post-Quantum Key Exchange (X25519Kyber768 → ML-KEM)?
Post-Quantum Cryptography Security & Identity
- As of
- 2026-08-20
- Revision
- 2026-08-17.1
- Method
- v1.3.0
Definition
The term, in context
AI-assisted draft · approved dataset
Chrome's default hybrid post-quantum key exchange makes TLS connections derive a shared secret from both X25519 elliptic-curve Diffie-Hellman and a lattice-based key encapsulation mechanism, so the session key stays secret unless both components are broken. The browser first shipped the Kyber-768 draft variant of this construction and then moved to its standardized ML-KEM form.
Live readiness status
Status as of the current dateline
AI-assisted assembly · derived results
As of 2026-08-20, verified readiness is 72 (claimed 88, reported 81, gap 16) — Growing evidence strength; current signals suggest Adopt with guardrails.
The readiness fact belongs to the canonical Readiness Verdict for Chrome Default Hybrid Post-Quantum Key Exchange (X25519Kyber768 → ML-KEM).
Dataset approval
Human editorial release
pragma.vision editorial — standing authorization (operator dev@soft.house, 2026-07-17)
- Dataset
- 2026-08-17.1
- Hash
- sha256:0c37108a182f510fc8cf4d1dfc3a30339f2b59e62654201edea2f530a268707e
- Approved
- 2026-08-17