Ever wondered how private chats work on a public, decentralized network? This deep‑dive explains Nostr Kind‑4 (NIP‑04) encrypted direct messages – from the ECDH shared secret to AES‑256‑CBC encryption – and reveals what’s truly private (content) vs. what’s still public (metadata). Learn how your messages stay safe without a central server ever touching them.
InvalidCastX · Jul 10, 2026
