Signal is adding a new cryptographic layer designed to defend against future quantum computing threats on the protocol's security. The enhancement, dubbed the Triple Ratchet, integrates a Sparse Post-Quantum Ratchet (SPQR) into the existing Signal Protocol, ensuring forward secrecy and post-compromise security (PCS) even in a post-quantum world. The research and implementation behind this upgrade … The post Signal Adds Post-Quantum “Triple Ratchet” Protocol for Stronger Security appeare...
