Source code and details: https://github.com/umutcamliyurt/IrisChat_TUI

Features:

End-to-end encrypted DMs

• Signal Protocol (X3DH key agreement + Double Ratchet) over IRC private messages
• Post-quantum key encapsulation with Kyber-1024 in the initial handshake
• Compatible with the IrisChat Android client

Security & storage

• Password-protected local keystore (AES-256-GCM, PBKDF2-HMAC-SHA256 with 310 000 iterations)
• Encrypted SQLite message database (all message fields encrypted at rest with AES-256-GCM)
• Master key zeroed in memory on lock