The gold standard of encryption. On your own servers.
OneFirewall Secure Channel brings the proven Signal open-source protocol to your enterprise — hosted entirely within your own infrastructure. End-to-end encrypted messaging, voice, and video with zero data touching third-party servers.
The most audited encryption in the world
The Signal Protocol, originally developed by Open Whisper Systems and now maintained by the Signal Foundation, is the most widely vetted end-to-end encryption protocol in existence. It powers Signal, WhatsApp, and Google Messages — independently audited by cryptographers at Oxford, Queensland University of Technology, and dozens of other institutions.
It combines the Double Ratchet Algorithm, Extended Triple Diffie-Hellman (X3DH) key agreement, and Curve25519 elliptic-curve cryptography — giving every message forward secrecy and break-in recovery. Even if a key is ever compromised, past messages remain undecipherable.
No Signal servers. No WhatsApp servers. No metadata harvesting.
Keys Generated On-Device, Never Transmitted
Every user's private key is generated locally and never leaves their device. The server distributes public keys but never sees private material.
Per-Message Key Rotation
Every message is encrypted with a unique session key derived from a ratcheting chain. Compromise of one key cannot decrypt any other message — past or future.
Zero-Knowledge Server Architecture
The Secure Channel server routes and queues encrypted blobs. It cannot decrypt message content, see who is messaging whom, or access media files.
Full Open-Source Auditability
The cryptographic core is open source. Your security team, or an external auditor, can inspect and verify every component of the implementation.
Secure Channel is the only Signal-protocol implementation integrated with Alliance threat intelligence — flagging suspicious contact requests before they reach your users.