A stolen SecureGate attestation (within its 2-minute validity window)
could be replayed against a different WebAuthn enrollment because the
envelope only attested (userID, score, timestamp) — it said nothing
about WHICH public key the user was actually enrolling.
Fix: extend LivenessAttestation with two optional binding fields:
credentialHash = sha256(publicKey) [base64-std]
challengeId = the WebAuthn challenge being enrolled [base64url]
handleBiometricEnroll computes both values from the real enrollment
data (consumed challenge bytes + submitted public key) and passes them
as ExpectedCredentialHash / ExpectedChallengeID to VerifyLiveness.
Mismatches are always fatal. A missing binding is fatal in STRICT
mode (the default) and warns-and-accepts in LAX.
BindingMode is server-configured via MPC_LIVENESS_BINDING=strict|lax.
Production mainnet runs STRICT — SecureGate must ship the extended
envelope as a deployment blocker. LAX exists solely for the rollout
window; every permissive accept emits an `mpc.biometric.binding_warn`
log line so operators can see rollout progress.
Tests added in pkg/webauthn/liveness_test.go:
- R38_AcceptsMatchingCredentialHash
- R38_RejectsMismatchedCredentialHash
- R38_RejectsMissingBindingStrict
- R38_LaxWarnsOnMissing
- R38_AcceptsMatchingChallengeID
- R38_RejectsMismatchedChallengeID
Full ./pkg/api/ suite green; the existing pre-R3-8 LAX-style liveness
tests still pass (they supply no Expected* values → the binding path
is a no-op for them).
Every /v1 mutating route that previously accepted role=="api" without
permission checks now uses requireRoleOrAPIPermission — JWT human roles OR
API keys that carry the concrete permission. R2-3 regression surface:
- /v1/transactions → mpc:transactions:create
- /v1/subscriptions/* → mpc:subscriptions:write
- /v1/payment-requests/* → mpc:payment-requests:write
- /v1/smart-wallets/* → mpc:smart-wallets:write
- /v1/trade/* → mpc:trade:write
- /v1/intents/* (sign/co-sign) → mpc:sign (same perm as /v1/mpc/sign)
- /v1/mpc/operations/approve,reject → mpc:operations:approve
Bare role=="api" is no longer sufficient anywhere — an API key with empty
permissions hits 403. Human roles (owner/admin/signer) still pass through
on JWT auth. Also adds the canonical requireRoleOrAPIPermission helper to
middleware.go.
- F1: /v1/mpc/sign now requires sessionId (403 without). Same for
settlement/sign. No silent auto-session selection in handlers.
- F15: /v1/mpc/sign now gated by requireRole("owner","admin","signer","api")
to match /v1/mpc/settlement/sign.
- F6: decodeMessage is strict — returns error when the declared encoding
does not parse. Removed the raw-string fallback that made the endpoint
an arbitrary-bytes signing oracle.
- F4: /v1/mpc/balances/{address} now resolves the address against the
caller's org (ETH/BTC/SOL columns). Unknown or cross-tenant address
returns 404 — no more "empty balances" leak.
- F5: biometric enroll requires a server-issued challenge, signed
attestation (P-256 ECDSA verify), and a SecureGate liveness score
above 0.8 (PAD-2). Raw templates are no longer accepted. Added
consumeBiometricChallenge + verifyBiometricAttestation helpers.
- F14: added Wallet.DefaultForUserID column; handleMpcSetDefaultWallet
now writes to it instead of stuffing a "default:<userID>" sentinel
into the user-facing Name field. Previous default (if any) is cleared
atomically per (orgId, userId).
- F22: findDefaultWalletID reads the new is_default column (via
defaultForUserId) — no more "most recently created wallet" fallback
that produced non-deterministic behavior.
Implement the canonical Liquidity MPC surface frozen in
openapi/mpc.yaml. All endpoints mount under /v1/mpc/* — one and only
one path per operation, no aliases, no backwards compatibility.
New:
- handlers_mpc.go — wallets, balances, default wallet, sign,
settlement/sign, webauthn/biometric spec shapes
- handlers_sessions.go — time-bounded signing grants with operation
and value limits, enforced on every /sign via consumeSessionForSign
- handlers_operations.go — unified Operation view over db.Transaction
with kind ∈ {sign,send,mint,burn,transfer,contract_call}
Changed:
- server.go: mount r.Route("/mpc", …); remove top-level /v1/policies
and /v1/audit (moved to /v1/mpc/policies, /v1/mpc/audit); retain
/v1/transactions POST as internal wiring
- handlers_policy.go: accept both {id} (internal) and {policyId} (spec)
- pkg/db/models.go: add Session model (registered as "mpc-session")
- ws.go: EventBus pubsub + /v1/ws upgrade handler (stdlib, no deps)
- zap_server.go: StartZAP(port) with opcodes 0x0060-0x0064
keygen, sign, status, wallets, intents over ZAP binary protocol
- Events field on Server for cross-transport event broadcasting
- Each consensus node serves full API (not separate mpc-api sidecar)
- Add bearer token auth to internal MPC API (port 9800): /keygen, /keys,
/backup now require Authorization header. Token from MPC_INTERNAL_API_KEY
env (KMS-synced) or derived from Ed25519 node identity.
- Replace DualModeListener with TLSOnlyListener: plaintext peer connections
are rejected. TLS 1.3 with PQ key exchange is mandatory.
- Add dedicated 20 RPM rate limiter on bridge signing and intent signing
endpoints (separate from global 100 RPM).
- Add body size limit (1MB), read/write timeouts, and 10 RPM rate limiter
to internal MPC API server.
- Restrict K8s NetworkPolicy egress for MPC nodes to peers, postgres,
valkey, DNS, and HTTPS only (was unrestricted).
- Wire cluster-api-key in api-deployment for authenticated proxy to
internal MPC API. Forward as Authorization: Bearer header.
- Remove hardcoded dev JWT_SECRET default from compose.yml (now required).
- Add internal-api-key to KMSSecret CRD and StatefulSet env.
MPC is generic infrastructure — no hardcoded tenant URLs.
- Remove pars.network, zoo.network from OIDC issuers, ingress, TLS
- Remove redacted.com, redacted from CORS, WebAuthn, tests
- CORS/WebAuthn origins now env-driven: MPC_CORS_ORIGINS, MPC_WEBAUTHN_ORIGINS
- Ingress: mpc.lux.network only — tenants route through their own ingress
- Tests updated to match infrastructure-only origin lists
KMS routes now live inside MPC API server — one binary for both:
- POST /api/v1/keys/generate — create validator BLS + Ringtail keys
- GET /api/v1/keys — list all validator key sets
- GET /api/v1/keys/{id} — get validator key set
- POST /api/v1/keys/{id}/sign — sign with validator key
- POST /api/v1/keys/{id}/rotate — reshare validator keys
Storage: ORM (same postgres/ZapDB as MPC wallets).
No separate KMS binary needed — mpcd serves both.
- Remove pkg/bridge/ (btc_watcher + orchestrator) — bridge/opnet-watcher
is the single source of truth for chain watching per CTO directive
- Add Handler() to API server for mounting on Hanzo Base
- MPC is signing-only; bridge is the control plane
Add MPC_WEBAUTHN_RP_ID and MPC_WEBAUTHN_ORIGINS env vars to make
WebAuthn relying party and origin allowlist configurable. Adds
Liquidity exchange origins (exchange.{dev,test,main}.redacted.com,
redacted) to WebAuthn origin checks, CORS, and security tests.
- Run goimports -w on all 17 Go files with formatting issues
- Set CGO_ENABLED=0 on all CI steps (test, lint, build, CodeQL, SBOM)
- Remove -race flag from tests (requires CGO which pulls in blst.h)
- All 17 test packages pass with CGO_ENABLED=0
Backend:
- Reorg detection in tx tracker (re-verify block hash, detect receipt disappearance)
- Post-finalization safety margin (6 extra blocks before stopping tracking)
- Server-side HSM co-signing (HSMProvider interface, server calls HSM directly)
- Background intent expiry reaper (5-min sweep for stuck intents)
- Domain-separated intent hashing (lux-mpc-intent:v1 prefix)
- Backup rate limiting (max 3 active per wallet)
- Default backup changed to 2-of-3 (iCloud + HSM + offline) for fault tolerance
- All status transitions now use RecordTransition with proper actors
Frontend:
- Intents list page with status filter
- Intent detail page with lifecycle progress bar, sign/co-sign actions
- Settlements list page with status filter
- Settlement detail page with lifecycle, HSM signatures, transfer agency
- Enhanced transaction detail with on-chain confirmation, revert reason, status history
- Wallet backup UI with Shamir shard visualization
- Updated StatusBadge with all new status colors
- Nav updated with Intents + Settlements links
- Co-sign UI updated for server-side HSM flow (key_id only, no client signature)
Add HTML landing page at / route for mpc.lux.network showing:
- CGGMP21 and FROST protocol info
- Supported chains (BTC, ETH, LUX, SOL, XRPL, TON, etc.)
- Links to health, bridge dashboard, and API docs
Also update go.work to Go 1.26.1.
- Add WebAuthn/FIDO2 registration and verification endpoints
POST /webauthn/register/begin, /register/complete, /verify
- Biometric approval: Face ID/Touch ID/YubiKey approve transactions
- Challenge bound to transaction ID (SHA256) preventing replay
- Enforce ApproverRoles from policy engine during transaction approval
- Add WebAuthnCredential DB model (pending_registration, active, revoked)
- Policy decisions now carry ApproverRoles for role-gated approvals
- Callback page now checks both hash fragment and query string for
access_token (Casdoor returns it in query string, not hash)
- Login redirect uses /oauth/authorize instead of /login/oauth/authorize
- Add hanzo.id to default OIDC issuers in MPC API
- Update E2E tests to match corrected authorize URL
- Add OIDC token exchange endpoint (POST /api/v1/auth/oidc) that
validates Lux ID access tokens and issues local MPC API JWTs
- Update dashboard auth callback to do 2-step exchange: get Lux ID
token, then exchange for MPC API JWT via OIDC endpoint
- Fix IngressRoute to use path-based routing (/api/v1 → API, / → dashboard)
- Fix deploy.yml to target lux-k8s cluster (not hanzo-k8s)
- Fix wallet creation page to use api client instead of raw fetch
- Add /api and /healthz to dashboard middleware public paths
- validateAPIKey returns *db.APIKey so middleware has access to permissions
- API key permissions propagated into request context via ctxPermissions
- requirePermission middleware checks actual key permissions (not just role)
- PasswordHash/MFASecret fields marked api:"-" to prevent serialization
- Remove stale generated files (CHANGELOG, CI_STATUS, DOCKER_BUILD etc.)
- Update LLM.md with production deployment state and architecture decisions
- Replace github.com/dgraph-io/badger/v4 with github.com/luxfi/zapdb/v4 v4.9.2
throughout pkg/kvstore/, pkg/transport/, cmd/mpcd/, e2e/, scripts/
- Rename BadgerPath/BadgerPassword → ZapDBPath/ZapDBPassword in FactoryConfig
- Remove local replace directives from go.mod:
- hanzoai/orm: now uses published v0.3.2 (tagged on GitHub)
- hanzoai/kv-go/v9: now uses published v9.17.2-hanzo.1
- Only remaining replace: agl/ed25519 → luxfi/edwards25519
- Add vendor/ directory (GOWORK=off go mod vendor) for reproducible builds
- Update Dockerfile to golang:1.26-alpine + -mod=vendor build flag
- Update CI/CD to use self-hosted linux/amd64 runners (no cross-compilation)
- Add k8s/valkey.yaml for session KV store
- Update k8s manifests: api-kv support, ZapDB password env, fresh secrets
- Dashboard API and MPC nodes all tested running on cluster (3/3 nodes healthy)
- TriggerSign now looks up key type from keyInfoStore (was empty, causing
"CGGMP21 only supports Secp256k1" errors)
- Wire keyInfoStore into ConsensusMPCBackend
- Increase HTTP middleware timeout from 30s to 120s for MPC signing
- POST /api/v1/generate_mpc_sig — MPC signature for bridge transactions
- POST /api/v1/complete — mark bridge swap as confirmed
- Add bridge.lux.network to CORS origins
- Bridge wallet: 0xe591c587889dea548b6f886cea60049e4e358805
- Update Dockerfile from golang:1.23-alpine to golang:1.25-alpine
matching go.mod requirement (go 1.25.5)
- Add public /healthz endpoint for K8s liveness/readiness probes
- Update api-deployment.yaml probes to use /healthz instead of
JWT-protected /api/v1/status
- Run go mod tidy to fix missing go.sum entries
zeekay