meshbay.git/packages/meshbay-hub/src/meshbay_hub/static/playlist-crypto.js, branch 0.18

chore: license MeshBay — LGPL protocol layer, AGPL for the rest

2026-10-05T07:20:38Z

The protocol layer is LGPL-3.0-or-later in every language it exists in, so any client may use it whatever its own licence: meshbay-common, and the files marked with an SPDX line — keyderive.js, crypto.js, playlist-crypto.js, transport*.js; keyring.js, transcripts.js and argon2-wasm.js on the desktop; Kdf.kt, Keyring.kt and Transcripts.kt on Android. Everything else is AGPL-3.0-or-later, which the RPM specs and package.json already declared without a licence file to back them. Two AGPL section 7 permissions: - group applications may be under any licence when they use the interface only through a named surface (static/licenses/APPLICATION-EXCEPTION.txt); the reference application is 0BSD so that copying it brings no AGPL code; - the Android application may be conveyed linked with Google Play services. Third-party code is accounted for: THIRD-PARTY-NOTICES.txt is generated from what a build ships (packaging/third_party_notices.py) for the deb/rpm venv and the frozen Windows node — PyAV's wheel grafts in libx264 and libx265, which its BSD licence does not mention — and the vendored browser libraries get their licence texts and htm-preact.js its provenance. Wheels carry SPDX metadata, RPMs %license, debs a DEP-5 copyright file, every Windows target LICENSE.txt. test_licensing.py holds the line: the LGPL layer imports nothing under the AGPL, the reference application nothing outside the application interface, and every SPDX line is one of the known ones. Co-Authored-By: Claude Opus 5.5

feat: bundles sealed per node under the passphrase and the hub's pepper

2026-09-30T13:06:14Z

The session key is M = HKDF(Argon2(passphrase) || pepper, account id); each node's bundle key and the playlist key derive from it. Bundles are MBK3, bound to account and node; MBK1/MBK2 are refused by name, never replaced silently. Playlists move to key v2 and are re-sealed over unreadable node copies. Co-Authored-By: Claude Opus 5.5

playlists: merge rules, sealing, and the key

2026-09-16T09:37:58Z

playlist-merge.js and playlist-crypto.js have no imports and are run by their tests, which is the only real evidence this feature can have. Two revision counters per playlist, not one: a rename on one device and a track added on another both write n+1, and a single counter makes two edits that do not overlap collide. One Argon2 run at sign-in, two handles. The AES handle is imported non-extractably, so nothing can be derived from it — hence a second import of the same bytes as HKDF rather than a derivation. Measured: ~270 bytes a track, deflate worth 4.5x on realistic data, so the 1 MB body cap holds about 17000 tracks. Co-Authored-By: Claude Opus 5