Zerion

Zerion is a secure messaging app and encrypted vault designed for people who need private, anonymous, censorship-resistant communication.

Unlike traditional messengers, Zerion uses no servers, no accounts, no phone numbers, and no cloud services. All communication flows directly between devices using the Tor network, protecting users from surveillance, metadata collection, and IP exposure.

With hybrid post-quantum cryptography on every message (Mode 3-Full: per-frame ML-KEM-768 encapsulation mixed into the body AEAD key), post-compromise security via the Triple Ratchet, hardware-backed vault protection, and advanced anti-forensics features, Zerion provides strong security even against sophisticated adversaries — including "harvest now, decrypt later" attacks by future quantum adversaries.

Zerion uses the Bramble protocol (originally developed by the Briar Project) and independently expanded it with post-quantum cryptography, voice and video calls over Tor, and an encrypted vault — all while keeping the core P2P architecture.

Why Zerion?

Truly anonymous — No phone number, email, or registration End-to-end encrypted messaging, groups, voice notes, P2P voice and video calls Per-message post-quantum hybrid ratchet (Mode 3-Full) — Every frame in both directions carries a fresh ML-KEM-768 encapsulation against the peer's current ML-KEM public key; the shared secret is mixed into the body AEAD key on every frame Post-Compromise Security — Triple Ratchet (X25519 DH + per-message ML-KEM-768 PQ) for per-message key evolution Tor-only networking — Your IP address is never exposed to contacts Direct peer-to-peer architecture — No central servers Encrypted Vault for passwords, documents, media, and notes Post-quantum hardened end-to-end — Hybrid ML-KEM-768 + X25519 at handshake, introductions, and on every transport frame; ML-DSA-65 + Ed25519 on every signed record Zerion-only — Purpose-built for Zerion-to-Zerion communication with maximum security Downgrade attack protection — PQ contacts stay PQ-secure forever Anti-forensics protection against mobile extraction tools Open-source and auditable

Zerion collects zero personal data. Not by policy — by cryptographic design.