Signal Adds Quantum-Resistant Encryption to its E2EE Messaging Protocol

Signal, a communication app that uses end-to-end encryption (E2EE), has upgraded its protocol to use quantum-resistant encryption keys. This is in preparation for the potential threat that quantum computers pose to current encryption schemes. The upgrade incorporates a post-quantum key encapsulation mechanism called CRYSTALS-Kyber, along with the existing elliptic curve key agreement protocol. Signal acknowledges that this is just the first step towards achieving quantum-resistant E2EE and further upgrades will be made in the future.