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Twenty-three documents that MESHBAY_DESIGN.md absorbs gain a header saying so
and naming the sections their content went to. None is deleted: code comments,
tests and the documents themselves cite their sections and their labels, and
each records reasoning a synthesis compresses.
The header states the precedence, because two documents describing one system
will disagree eventually: where a draft disagrees with MESHBAY_DESIGN.md the
design document is right, and where either disagrees with the code the code is.
Seven status lines were corrected on the way through, all of them claiming less
than the truth. Videos, Music, Photos, partial-read hashing and account recovery
were headed "proposal, not implemented" months after they shipped; the desktop
client said "nothing here is implemented" with stages A through D running; draft
v6 still called itself the current specification.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YVoHVCcfBqud6ZjG4db3y7
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The passphrase derives two independent client-side values: auth_key (the
hub verifier) and bundle_key (AES-GCM key for the per-node identity
bundles, which live on nodes and never on the hub). Changing or
recovering a passphrase is therefore two operations — swap the hub
verifier, and re-wrap every reachable node's identity bundle.
Flow A — change a known passphrase (Profile page)
- POST /v1/users/password re-proves the current passphrase, swaps
pw_hash/salt/version, revokes every refresh token and returns a fresh
pair so the tab that made the change stays signed in.
- MeshBayTransport.rewrapAllNodes: for every group's online node, connect
with the old key, read the identity off the handshake, store it back
under the new key. Returns updated / unreachable / failed so the UI can
point at the operator-unpin fallback for the gaps. Always-shown
confirmation dialog listing reachable and unreachable groups.
Recovery key
- keyderive.js generateRecoveryKey (32 random bytes, grouped Base32) and
deriveRecoveryKey (HKDF-SHA256, domain meshbay:recovery:v1:<username>).
- Every per-node identity gets a second copy wrapped under the recovery
key: keypair_bundles.bundle_enc_recovery (node-only column, added in
_SCHEMA_KEYPAIR and via a PRAGMA-guarded ALTER for existing DBs),
carried on keypair_bundle_store / _resp. MNP 0.13 -> 0.14, additive.
- session.recoveryKey is persisted in IndexedDB (slot rk) and lazy-loaded
on connect, so a group joined in any later session still leaves a
recovery copy.
- Shown once at registration; optionally folded into the verification
e-mail as a pass-through the hub never stores or logs, with an opt-out.
- Profile -> Recovery key re-loads R and backfills every reachable node
via rewrapAllNodes in bundleKey mode (no passphrase re-entry).
Flow B — recover a lost passphrase (#/reset, linked from sign-in)
- POST /v1/users/password/reset-request {username, email}: both must be
the pair on file, checked against the blind email_hash (never
decrypted). A mismatch — wrong e-mail, unknown username, non-active
account — takes the identical no-op path (no code, no mail, same 200),
so it reveals nothing and cannot be used to spray reset mail from a
username alone. 5/min, 1-hour single-use code.
- POST /v1/users/password/reset {username, code, new_auth_key}: same
expiry / attempts / single-use checks as e-mail verification; revokes
every session and deletes every registered device key so a stored one
cannot sign back in past the reset.
- ResetPasswordPage: request code -> code + optional recovery key + new
passphrase -> reset + sign-in -> fan-out. connect() falls back to the
recovery-wrapped copy when the passphrase key cannot open bundle_enc.
Without a recovery key: sign-in is restored and each group needs the
operator-unpin fallback.
Supporting fixes (found in live testing)
- member unpin now also deletes the keypair bundle; connect() mints a
fresh identity when handed a bundle it cannot open (unless _rewrapOnly,
set by rewrapAllNodes), so a rejoin completes instead of dead-ending
before the invite-code prompt.
- A browser with no bundle key gets a passphrase prompt on the group page
instead of a "go back to the browser you registered on" message.
- RegisterPage / LoginPage / ResetPasswordPage trim the username so every
key derivation matches the hub's stored form.
Docs: docs/auth-confirm.md. Locale keys across all ten catalogues.
Tests: test_password_change, test_password_reset, test_recovery_email,
test_recovery_key, test_rewrap_fanout, test_bundle_store_recovery, plus
additions to test_admin_ops_mnp and test_webrtc_transport. Hub suite 492
passed; node suite 741 passed (the lone test_packaging_units failure is a
pre-existing RPM-spec flake, reproducible on main).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GGkxJW9br8Y9bhT8ywJ3oc
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