Signal Protocol

Signal Protocol is a free and open-source encryption protocol designed to provide end-to-end encryption for instant messaging, voice calls, and video calls. It uses various cryptographic techniques, including Diffie-Hellman key exchange, Elliptic Curve Diffie-Hellman, and EdDSA signatures, to establish secure communication channels between parties. The protocol is designed to ensure the confidentiality, integrity, and authenticity of messages exchanged between users.