When signing with a subset of parties (e.g., party-1 and party-3 in 2-of-3),
the TSS library creates a sorted array of party IDs. Messages contain the
original keygen party index, but we need to map it to the sorted array index.
This fixes the 'invalid FromPartyIndex' error when signing with non-consecutive
party indices.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Previously, signing incorrectly required all n parties from keygen to participate. For 2-of-3 threshold, it required all 3 parties instead of just 2.
Root cause: tss.NewParameters was using len(currentSigners) instead of the original n from keygen.
Changes:
- Added TotalParties field to SigningConfig to store original n from keygen
- Modified participate_signing.go to read threshold_n from database
- Updated tss.NewParameters to use TotalParties instead of current signer count
- Added logging to show t, n, and current_signers
For 2-of-3: threshold_t=2, threshold_n=3, any 2 parties can now sign.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Remove Address field from PartyEndpoint (parties connect to router themselves)
- Update K8s Discovery to only manage PartyID and Role labels
- Add Party registration and SessionEvent protobuf definitions
- Implement PartyRegistry and SessionEventBroadcaster domain logic
- Add RegisterParty and SubscribeSessionEvents gRPC handlers
- Prepare infrastructure for party-driven MPC coordination
This is the first phase of migrating from coordinator-driven to party-driven
architecture following international MPC system design patterns.
Major changes:
- Add TSS core library (pkg/tss) with keygen and signing protocols
- Implement gRPC clients for Server Party service
- Add MPC session endpoints to Account service
- Deploy 3 Server Party instances in docker-compose
- Add MarkPartyReady and StartSession to proto definitions
- Complete integration tests for 2-of-3, 3-of-5, 4-of-7 thresholds
- Add comprehensive documentation (architecture, API, testing, deployment)
Test results:
- 2-of-3: PASSED (keygen 93s, signing 80s)
- 3-of-5: PASSED (keygen 198s, signing 120s)
- 4-of-7: PASSED (keygen 221s, signing 150s)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
hailin
Developer