Sure thing – treat the channel like a lockbox that’s constantly sliding. First, swap any old TLS 1.2 for TLS 1.3 with perfect forward secrecy, so even if an eavesdropper grabs a session key later, past traffic stays sealed. Then wrap every message in a signed envelope: use a lightweight signature like Ed25519 so you can verify origin fast. For key exchange, use a ratchet‑style Diffie‑Hellman—every round a fresh 256‑bit key is derived, so no key sticks around longer than the conversation. Keep the message format minimal: no big headers, just a version byte, nonce, ciphertext, and the tag; that keeps parsing snappy and leaves nothing for an attacker to pad or brute‑force. Finally, enforce a strict key‑rotation policy: rotate your long‑term keys every few weeks and never reuse nonces. That way the protocol stays lean, fast, and almost unhackable.