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XChaCha20 · ML-KEM-768 · SPQR · E2EE · ephemeral · N-party

  Covert  communications  for private group conversations.
  Invite,  talk,  close the client, and the chat vanishes.
  End-to-end  encrypted  with  post-quantum  cryptography,
  both manual and epoch-based ratchet events add layers of
  forward  secrecy, ensuring messages remain private today
  and unreadable to the computational power of tomorrow.

Document	Purpose
USAGE	Client and server applications development and runtime help
PROTOCOL	Cipher, chains, ratchet, group model, session lifecycle, server role
CRYPTOGRAPHY	Primitives, KDF chains, wire format, invite encoding
THREAT-MODEL	Principals, adversary tiers, guarantees, non-goals
CLI-SPEC	CLI architecture, rendering, input, widgets, views, & color system
SECURITY-POLICY	Supported versions, disclosure policy, cryptographic foundation
PROTOCOL-DIAGRAM	Animated visualization of a 3-party session and epochs
RECONNECT-DIAGRAM	Animated visualization of peers left / join ceremonies

Quickstart

Point chat.example.com at the host you'll run on, then:

docker pull xerostyle/covcom:latest
docker run -d \
  -p 80:80 -p 443:443 \
  -e DOMAIN=chat.example.com \
  xerostyle/covcom:latest

Open https://chat.example.com in a browser. Create a room, share the invite, & chat.