Jason Tudisco
79e7e9536b
Crypto / protocol
- v4 envelope: X25519 + ML-KEM-768 hybrid (PQXDH-style HKDF over both
secrets). Heartbeats now carry an ML-KEM key; senders emit v4 whenever
the peer's heartbeat has one, v3 otherwise. Adds @noble/post-quantum.
- Heartbeats are signed by the KEZ identity and verified against the
recipient's primary before use. Previously a spoofed nostr pubkey
(from a re-wrapped replayed envelope) let an attacker substitute their
own heartbeat and read messages.
- Heartbeat retention counts from supersession, never deletes the
newest key, and GC runs after rotation — returning after a long
offline stretch no longer destroys the key the backlog needs.
- Verified-heartbeat cache per peer: 5-min TTL (one lookup per file
instead of per chunk) and anti-downgrade to identity ECDH.
- Always republish heartbeat on session start; rotate on the poll timer;
atomic IDB updates; wipe heartbeats on "Forget this account".
- Dedupe inbound envelopes by sender_sig (replays / re-broadcasts).
Server
- Proxy /v1/sigchains/* to the internal sig-server and hand out the
public https://<server>/v1/sigchains/... URL. Sigchain sync from the
app was failing ("Load failed") against http://sig-server:7878.
App
- Relay settings apply to profile / NIP-65 publishing (republished on
change); wss-only relays (ws:// for localhost); order-aware defaults.
- Clear chat also deletes attachments; retention changes apply
immediately with a warning when shortening.
- Photos: HEIC -> JPEG and downscale to 2048px (iOS canvas limit, strips
EXIF); snapshot the conversation at send time.
- Overlay a11y/Escape fixes, scroll-pin fix, svelte-check to 0 errors.
- Clear chat, image zoom, file-body fallback rendering, NIP-65 read
relays in publish set, relay settings UI, forward-secrecy settings.
Docs
- README rewritten to explain the whole app; SECURITY.md updated for v4;
heartbeat self-check (src/lib/heartbeat.selfcheck.ts).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
13 lines
715 B
Bash
13 lines
715 B
Bash
# Nostr branch: chat transport runs over Nostr relays instead of the
|
|
# kez-chat server inbox. The code default (see src/lib/transport.ts) is
|
|
# still "server", so main/other branches are unaffected — this file is
|
|
# what flips this branch to Nostr.
|
|
VITE_TRANSPORT=nostr
|
|
|
|
# Relays to publish to / read from (comma-separated). Optional — the
|
|
# transport falls back to these same defaults if unset. The set
|
|
# below mirrors the source-of-truth default in nostr-transport.ts,
|
|
# profile-store.ts, peer-profile-store.ts, and the rust
|
|
# nostr_listener config. Update all four when changing the default.
|
|
VITE_NOSTR_RELAYS=wss://relay.damus.io,wss://nos.lol,wss://relay.primal.net,wss://relay.snort.social,wss://nostr.wine
|