Four steps.
Zero servers in the middle.
From creating your identity to leaving no trace — here's exactly what happens, and where.
身元の作成から、サーバーに残さない仕組みまで。QRYPTUSの内部で何が起きているかを順に図解します。
Create Identity
When you first open the app, a cryptographic key pair is generated entirely on your device. Your identity is your fingerprint — derived from that key. No account registration required.
Protect with Passkey
Your identity is locked with your device's passkey. Unlock with fingerprint or face recognition — the key never leaves your device.
Connect Peer-to-Peer
When you start a conversation, your devices connect directly via WebRTC. The signaling server only introduces peers — it never sees the conversation itself. Nobody on the path can read it.
Nothing Stored on Server
Messages are never stored on any server. On Basic and Advanced, they're saved encrypted locally on your device. In Paranoid mode, nothing persists — messages vanish when the session ends.
Good. So are we.
Every step above maps to a named, inspectable mechanism. See the full security model.