feat: device-auth backend for codeless sign-in (app #12) #3

Merged
richiexec merged 1 commit from feat/device-auth into main 2026-07-19 17:34:36 +00:00

1 commit

Author SHA1 Message Date
b98b80b33b feat(device-auth): codeless device sign-in backend (#12)
A new device (TV) signs into an account with no password typed on it and
no pairing code, approved from an already-logged-in phone/PC.

- device_auth collection (migration): code (unique), deviceName, status,
  user, expiresAt + hidden authToken/keyCiphertext/pollSecret/devicePubKey.
  Owner-scoped list/view/delete only (the device list + revoke); create/
  update locked to the hooks.
- pb_hooks/device_auth.pb.js: public request + info + pollSecret-gated
  poll routes (the TV is unauthenticated), auth-gated approve (mints
  e.auth.newAuthToken(), stores the E2E vault-key ciphertext) + decline,
  and a cleanup cron that scrubs delivered tokens and stale rows.
- pb_hooks/device_page.pb.js: self-contained approve page at GET /device.
  Signs in, derives the addon-config vault key (#20) with WebCrypto PBKDF2,
  seals {salt,keyB64} to the TV's X25519 pubkey (vendored TweetNaCl +
  WebCrypto HKDF/AES-GCM), and approves. The server never sees the key.
- Dockerfile ships pb_hooks (--hooksDir); verify.py covers the schema +
  that the routes are served.

Crypto matches the app byte-for-byte (proven by the app's fixed-vector
tests). Full contract: docs/device-auth-contract.md. JWT-revocation
limitation documented (v1).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-19 14:36:15 +02:00