Chaos Board is an encrypted bulletin board. Messages are composed and encrypted in your browser before being sent to the server.

The server stores only ciphertext and never sees plaintext content. Decryption happens entirely client-side — your encryption key is never transmitted or stored. AES-256 with PBKDF2-SHA256 key derivation is used.

All messages are public: anyone can see the ciphertext, but it cannot be decoded without knowing the encryption key used when posting.

Privacy notice: your client IP address may appear in the server's HTTP logs. If privacy is a concern, access this service through a trustworthy VPN or the TOR network.

Source code: https://git.hoddmimes.com/bertilsson/CBoard