v0.3.4: Child key derivation

v0.3.4 — 2025-12-09

A refinement release focused on CKD, testing, and tooling improvements.

Highlights

• Added HD wallet examples for both ECDSA and EdDSA
• Integrated child key derivation (CKD) into signing sessions
• Added walletID to derivation and refactored CKD struct
• Introduced chain_code config and updated derivation logic
• Updated dependencies: switched to fystack/tss-lib and added btcec v2.3.2
• Improved setup scripts: distribute initiator public key automatically and added build step
• Expanded E2E tests to include CKD signing
• Fixed reshare event handling (PubKey safety)
• Fixed multiplatform Docker builds
• Cleanup: lint fixes, CI updates, removed unused functions, updated installation docs

v0.3.3 - Cloud-Ready, Authorized, and Benchmarked

Release Date: 2025-11-02
Version: v0.3.3

This release focuses on enterprise-grade deployment, authorization hardening, and performance benchmarking, making Mpcium more production-ready across distributed and cloud environments.

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ighlights

1. Kubernetes & Docker Support

• Added official Dockerfile and Kubernetes deployment guide for seamless containerized rollout.
• Improved setup scripts for cross-platform compatibility (bash, sed, etc.).

2. Authorization Framework Enhancements

• Introduced public-key-based authorization with algorithm selection and backward compatibility.
• Refactored initiator message authorization for clarity and consistency.
• Event consumer now verifies authorized signatures for improved message trust.
• Added detailed examples for generating authorizers and configuration setup.

3. Cloud Observability & Reliability

• Added /health endpoint for cloud and Kubernetes probes.
• Improved context cancellation handling for graceful shutdowns.
• Added informative logs for Consul initialization.
• Refined configuration loading order and mandatory config validation.

4. Performance & Benchmarking

• Introduced new benchmark command to measure signing and keygen performance.
• Refined benchmark logic for improved accuracy and developer insights.

5. Setup & Tooling Improvements

• Enhanced setup scripts and configuration generation flow.
• Default CLI now reads ./peers.json automatically (no manual path required).
• Updated identity examples and directory structure documentation.
• Upgraded to latest Consul API for improved cluster compatibility.

6. Security & Stability Fixes

• Fixed ECDH race condition in distributed deployments.
• Corrected S256 public key encoding issue.
• Improved error messages and minor cleanup for better debugging.

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Developer Notes

• Minimal configuration changes required; existing deployments remain compatible.
• Recommended to redeploy using the new Docker/K8s setup for best observability and lifecycle management.
• Benchmark command can be run via CLI to assess network or node performance.

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🔗 References

• Full Changelog
• Deployment Guide (Kubernetes)
• Authorization Configuration Example

v0.3.2: ECDH key exchange, Cloud KMS support

What's Changed

• New feature: P2P channel implemented to encrypt Tss message using ECDH by @nann-cheng in #71
• Fix lint issue by @anhthii in #87
• Enhanced MPC Cluster Resilience and Error Handling by @nann-cheng in #91
• Implement ECDH for P2P message encryption by @anhthii in #95
• Supported p256 for event initiator by @tuananhk13bk in #96
• Add more flags for mpcium-cli to handle configuration management by @anhthii in #99
• Minor fixes by @anhthii in #101

New Contributors

• @tuananhk13bk made their first contribution in #96

Full Changelog: v0.3.1...v0.3.2

v0.3.1

What's Changed

This update includes major improvements to concurrency, security, testing, and durability:

• Refactoring & Concurrency Codebase refactored with configurable concurrent signing sessions for improved performance (#43, #70).

• Resharing Support Added resharing logic with participant checks, old key compatibility fixes, and cache adjustments (#45, #79, #81, #86).

• Testing & CI – Refactored E2E test workflows, and enhanced CI security checks ( #82).

• Durability & Backup – Enabled JetStream durability for keygen events, updated Badger for better persistence, and implemented backup/recovery mode by default (#51, #53, #61, #62).

• Bug Fixes – Resolved keygen topic errors, improved duplicate tx_id error handling, and reduced duplicate error logs (#54, #58, #63, #64, #68).

• Miscellaneous – Removed redundant config fields and refined error messages (#80, #60).

New Contributors

• @vietddude made their first contribution in #45
• @Azzurriii made their first contribution in #63
• @pratikbin made their first contribution in #82

Full Changelog: https://github.com/fystack/mpcium/commits/v0.3.1

v0.3.0: Support resharing

What's Changed

• Code refactoring, improve node through put: 1 keygen/second, signing < 500ms by @anhthii in #43
• Support resharing for ECDSA, EdDsa to allow key recovery by @vietddude in #45
• Add integration, unit testing CI pipelines by @anhthii in #48
• Security fixes + CI security check pipeline by @anhthii in #49
• Add setup_identities, initiator script by @vietddude in #52
• Add durability for keygen event with jetstream by @Poseidon-G in #51

New Contributors

• @vietddude made their first contribution in #45

Full Changelog: https://github.com/fystack/mpcium/commits/v0.3.0

v0.2.2: CLI Supports

What's Changed

• CLI implementation + enhanced encryption, node identity mutual verification by @anhthii in #34
• Upgrade dependencies by @anhthii in #36

Full Changelog: v0.2.1...v0.2.2

v0.2.0: Improve resiliency

What's Changed

• Fix duplicate message + bug can't sign transaction when nodes restart by @anhthii in #30

Full Changelog: v0.1.7...v0.2.0

v0.1.7

Full Changelog: v0.1.6...v0.1.7

v0.1.6

Full Changelog: v0.1.5...v0.1.6

v0.1.5

What's Changed

• Fix bug signing, key generation does complete due to message delay

• V0.1.4 eddsa signing by @anhthii in #16

Full Changelog: v0.1.4...v0.1.5