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The server only checked the captcha when auth_key was absent — but
every real client (browser included, via the password split) sends
auth_key, so the check was off for everyone, and a bot skipped it by
including the field. The Register form still made humans solve a
widget whose token was never transmitted.
Gate is now unconditional on captcha.enabled. The web client
(registerUser in keyderive.js) forwards captcha.token; RegisterPage
resets the (single-use) token on a failed attempt. The desktop client
shares this UI source and is Chromium, so it renders the same widget
(see the paired meshbay-client commit for the CSP change that allows
it).
Tests: test_register_captcha.py.
Third security review, finding M1 (Option A).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011pG75yGK3NthNfyjH74omG
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Server-side verification module, CaptchaConfig in hub.toml,
captcha_site_key exposed via /v1/hub/info, useCaptcha() hook
in the SPA with stable DOM rendering (strength bar always present
to avoid Preact re-ordering the captcha widget). Native clients
(auth_key path) skip captcha. All 10 locales updated.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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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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Registration now creates a pending account and sends a 6-digit code via
email; the account activates only after verification. Email changes on
the profile page follow the same flow. Group invitations send a
notification email to the invitee (without revealing their address to
the inviter) containing the invite code and hub link.
Backend: blind HMAC-SHA256 email index for uniqueness without decryption,
mail.py for localhost Postfix delivery, verification endpoints, cleanup
of expired codes and stale pending accounts, startup backfill of
email_hash for existing users.
Frontend: 3-phase register page, inline email change verification on
profile, invite-notify call with status display. All 10 locales updated.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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ExplorePage → explore-page.js (static import), LoginPage/RegisterPage/
FirstRunPage → auth-page.js (static import, LoginPage receives onLogin
as a prop), CreateGroupPage/wizard → create-group-page.js (lazy-loaded
via dynamic import(), same pattern as AdminPage/NodePage).
app.js goes from 1803 to 914 lines. webapp.py _ASSETS extended with the
three new files and the previously missing extracted pages. Test fixtures
updated to follow the moved components.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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