Own PQS encryption

• Architecture: Pure P2P - no servers, no databases
• Key storage: Keys generated in memory, never stored, erased after use
• Metadata: Only IP and port exist during the session - everything else is encrypted & obfuscated
• Encryption: PQS v1.2 - PBKDF2-HMAC-SHA256 (200k), BLAKE2s-MAC, custom stream cipher + fake padding
• Authentication: BLAKE2s-MAC (16 bytes) - instant failure on any data change
• Packet obfuscation: --stealth mode - padding, hidden structures
• Connection: Direct peer-to-peer only
• Anonymity: No accounts, logins, or phone numbers
• Third-party access: Impossible without physical access to both peers during session
• History: No storage — all in RAM, wiped on close
• Message size: Limited only by RAM & MTU — no artificial limits
• External dependencies: None
• DPI/blocking resistance: Harder to detect, can be masked
• Autonomy: Fully offline until peers connect

Listening for incoming connection (Server mode)

• python3 pqs_chat.py --listen 0.0.0.0:0000 --password --nick --stealth

• --listen IP:port - Bind to specified IP and port to accept connection

• --password - Shared session password (PQS key derivation)

• --nick - Local nickname shown in chat

• --stealth - Enable packet obfuscation and structure hiding

Connecting to a peer (Client mode) python3 pqs_chat.py --connect 0.0.0.0:0000 --password --nick --stealth

• --connect IP:port - Bind to specified IP and port to accept connection
• --password - Shared session password (PQS key derivation)
• --nick - Local nickname shown in chat
• --stealth - Enable packet obfuscation and structure hiding

Example:

• Server mode: python3 pqs_chat.py --listen 0.0.0.0:7777 --password Test12345 --nick Ivan --stealth
• Client mode: python3 pqs_chat.py --connect 111.222.33.44:7777 --password Test12345 --nick John --stealth

Licensed under the Petoron P2P Messenger Fair Use License by Ivan Alekseev | Petoron