Triple Threat: Signal's Ratchet Goes Post-Quantum
blog.quarkslab.com | research | #cryptography | #post-quantum | #ml-kem | #signal | #secure-messaging | #spqr
Summary
Quarkslab examines Signal's new Sparse Post Quantum Ratchet (SPQR): how it piggybacks on ML-KEM to add post-quantum security to message-key derivation alongside the existing double ratchet.
- Published
- Collected
--- id: 4335 title: "Triple Threat: Signal's Ratchet Goes Post-Quantum" source_domain: blog.quarkslab.com source_url: "https://blog.quarkslab.com/triple-threat-signals-ratchet-goes-post-quantum.html" published_at: "2025-10-06 22:00" tags: ["cryptography", "post-quantum", "ml-kem", "signal", "secure-messaging", "spqr"] phying_url: "https://phying.com/item/4335" lang: en --- # Triple Threat: Signal's Ratchet Goes Post-Quantum ## Summary Quarkslab examines Signal's new Sparse Post Quantum Ratchet (SPQR): how it piggybacks on ML-KEM to add post-quantum security to message-key derivation alongside the existing double ratchet. ## Intelligence Metadata - **Sources:** blog.quarkslab.com - **Published:** 2025-10-06 22:00 - **Original:** https://blog.quarkslab.com/triple-threat-signals-ratchet-goes-post-quantum.html - **Phying News:** https://phying.com/item/4335