Di tin dɛn we pɔsin fɔ no bɔt Ɔnda di hud

Protokɔlɔ ɛn di tin dɛn we apin

Wetin Nymchat rili put pan di waya, fɔ ɛnibɔdi we de bil agens am, ɔditin am, ɔ rid ivintɛns frɔm ɔda Nostr klaynt.

Dɛn translet dis pej wit mashin fɔ mek i izi fɔ am. Di Inglish ɔrijinal na di vɛshɔn we de aplay.

Ivent kayn dɛn

Kayn	Yuz fɔ	Notis dɛn
`0`	Profayl mɛtadata	Standard Nostr profayl: nem, pikchɔ, baner, bɔt, `lud16`.
`5`	Dilishɔn rikwest dɛn	NIP-09 we dɛn kɔl.
`7`	Di we aw pipul dɛn kin biev	NIP-25, wit wan `['k', originalKind]` tag so wan riakshɔn de fayl agens di rayt chanɛl tayp.
`13`	Stamp	Di midul layt fɔ wan NIP-17 mɛsej.
`14`	Prayvet mɛsej rɔmɔr	Nɔ sayn, ɛn nɔ ɛva pablish fɔ insɛf.
`1059`	Gift wrap we dɛn kin rap	NIP-59 we dɛn kɔl. Wetin rili rich wan rilay fɔ prayvet mɛsej ɛn grup chat.
`1984`	Fɔ ripɔt	NIP-56 we dɛn kɔl.
`9734` / `9735`	Zap rikwest ɛn zap risit	NIP-57 we dɛn kɔl.
`10030`	Kastom emoji pak list dɛn	NIP-30 we dɛn kɔl.
`20000`	Geohash chanɛl mɛsej	Ephemeral, we dɛn dɔn tag `['g', geohash]`.
`23333`	Nem chanɛl mɛsej	Ephemeral, we dɛn dɔn tag `['d', channel]`.
`24420` / `24421`	Pɔblik tayp indikɛtɔ ɛn rid risit	Nymchat-spɛsifi k, fɔ pɔblik chanɛl dɛn.
`25051` / `25052`	Pia-to-pia signal ɛn fayl-transfa stetɔs	Nymchat-spɛsifi k.
`30030`	Kastom imɔji sɛt dɛn	NIP-30 we dɛn kɔl.
`30078`	Aplikeshɔn data	NIP-78 we dɛn kɔl. Poll, ɛn ɛnkript sɛtin dɛn de sink.
`69420`	Prayvet rid risit ɛn dilivri stetɔs	Nymchat-spɛsifi k, we dɛn kin kɛr as rɔmɔr insay gift wrap. Wan sɛpret kayn frɔm `14` bay wilful, so ɔda NIP-17 klaynt dɛn nɔ de rɛnd blank dairekt mɛsej fɔ ɛvri risit.

NIPs Nymchat de impliment

NIP we dɛn kɔl	Wetin i de gi Nymchat
NIP-07 we dɛn kɔl	Login wit wan brɔwza ɛkstenshɔn.
NIP-09 we dɛn kɔl	Dilishɔn rikwest dɛn.
NIP-13 we dɛn kɔl	Pruf fɔ se yu dɔn wok. Mesej dɛn we de kɔmɔt, dɛn kin mayn to at le 16 bit.
NIP-17 we dɛn kɔl	Prayvet dairekt mɛsej, ɛn di bɛnifit fɔ grup chat.
NIP-25 we dɛn kɔl	Di we aw pipul dɛn kin biev.
NIP-30 we dɛn kɔl	Kastom emoji.
NIP-40 we dɛn kɔl	Expiration timestamps — mɛsej dɛn we de lɔs.
NIP-44 we dɛn kɔl	Versioned encryption, we dɛn kin yuz fɔ sil, rap ɛn sɛtin dɛn we dɛn kin sink.
NIP-46 we dɛn kɔl	Rimot sayn — . `bunker://`.
NIP-56 we dɛn kɔl	Fɔ ripɔt.
NIP-57 we dɛn kɔl	Laytnin de zap.
NIP-59 we dɛn kɔl	Gift we dɛn kin rap.
NIP-78 we dɛn kɔl	Data we dɛn kin yuz fɔ aplikeshɔn we dɛn nɔ want.
NIP-98 we dɛn kɔl	HTTP auth, fɔ di ɛndpɔynt dɛn we dɛn dɔn ɔs.

Kriptografi we dɛn kin yuz

Usay	Wetin
Aydentiti ɛn sayn dɛn	secp256k1 wit Schnorr signature (BIP-340), as Nostr spɛsifa.
Prayvet mɛsej ɛn grup chat	NIP-44 v2: ECDH pan secp256k1, HKDF-SHA256, ChaCha20 wit HMAC-SHA256, ɛn pad so sayfatɛks lɔng nɔ de gi di mɛsej lɔng away.
Bluetooth mesh seshɔn dɛn	Noys XX — X25519, ChaCha20-Poly1305 (IETF), Ed25519 fɔ anɔys sayn, SHA-256 ɛn HMAC ɔnda.
Aydentiti we yu de rɛst	AES-GCM-256 we de na di wɔl. Di ki kɔmɔt frɔm PBKDF2-SHA256 na 310,000 itɛreshɔn fɔ paswɔd ɔ PIN, ɔ frɔm WebAuthn PRF autput tru HKDF-SHA256 fɔ paski ɔ bayometrik.
Kɔl ɛn fayl transfa	WebRTC in yon DTLS-SRTP, we dɛn negoshiet oba NIP-17-rap signal.
Na random tin we pɔsin kin du	Di pletfɔm CSPRNG ɔlsay — ki, nonces, ɛn di gift-wrap tɛmstamp jitter.

Metadata protɛkshɔn

Tu ditel dem fo di gift-wrap path na im fit kol out, bikos na dem separet NIP-59 frɔm "ɛnkript, bɔt i klia se frɔm yu to dɛn":

Ɛvri wrap gɛt sayn wit a wan tɛm ki we dɛn mek fɔ da mɛsej de nɔmɔ, . so no tu wrap nɔ de sheb wan pɔsin we de sɛn.
Everi wrap's created_at na randomly bakdɛt bay te to tu awa dɛn yuz di CSPRNG, so dɛn nɔ go ebul fɔ layn di tɛm fɔ sɛn ɛn gɛt.

Grup chat ad rotating ephemeral di pɔsin we de gɛt am ki dɛn pan tap dat — si Aw grup ɛnkripshɔn de wok.

We yu de rid di say we dɛn pul am

Di kripto primitiv dɛn de insay js/nym-crypto.js ɛn js/modules/key-vault.js insay di wɛb ap, ɛn ɔnda android-ios-app/lib/core/crypto/ ɛn lib/services/mesh/noise/ insay di Flutter ap. Di di say usay dɛn de kip tin dɛn na AGPL-3.0 ɛn kɔmplit — nɔ klos kɔmpɔnɛnt nɔ de fɔ tek pan trɔst.