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nip04

(2 articles)

How Nostr Chats Really Work

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.

bchbchnostrnostrnip04encryptedchatkind4decentralizedprivacyaes256ecdhsecp256k1cybersecuritycryptographynostrprotocolselfsovereignnip17nip44web3bitcoinmessagingendtoendencryption

Private communications over public infrastructure

Today I want to write down some thoughts on what it really means to have private communications over public infrastructure, and whether such a thing is even possible at all.

nostrDMprivacyencryptionmessagingnip04nip-04nip17nip-17gift-wrapmarmotmlsdouble-ratchetsignal