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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

1.1.3 - 2025-12-03

Changed

  • Code cleanup and improved code quality
  • Clean up verbose AI-generated comments
  • Fix whitespace formatting
  • Skip loading pre-generated keys for 2^8 lifetime in sign command

1.1.2 - 2025-12-03

Fixed

  • Fixed SSZ secret key serialization to match Rust implementation exactly
  • Fixed SSZ deserialization issues
  • Fixed Shake PRF to use 16 bytes per field element (matching Rust leansig)
  • Derive public key from secret key instead of loading separately
  • Security and robustness improvements

Added

  • Added inspect command to Rust and Zig tools for examining keys
  • Added pre-generated keys test to CI
  • Added lifetime detection and warning when loading pre-generated keys
  • Added file size comparison to benchmark tools
  • Added README for pre-generated keys directory

Changed

  • Optimized inspect command to parse SSZ metadata only for faster performance
  • Handle both minimal and full SSZ secret keys in sign command
  • Cleaned up excessive debug output from tools

1.1.1 - 2025-12-02

Fixed

  • Resolved memory leak in signature operations
  • Removed outdated memory leak documentation

1.1.0 - 2025-12-02

Added

  • SSZ (Simple Serialize) Support: Full implementation of SSZ serialization/deserialization for all signature scheme types
    • Added ssz.zig dependency for Ethereum-compatible SSZ encoding
    • Implemented SSZ methods for PublicKey, SecretKey, Signature, and MerklePath types
    • Cross-language compatibility tests now pass for both bincode and SSZ encodings
    • CI pipeline updated to test SSZ encoding by default alongside bincode
    • Benchmark tools support --ssz flag for testing SSZ encoding

Fixed

  • Corrected rho serialization for cross-language compatibility
  • Fixed 2^18 SSZ cross-language compatibility issues
  • Fixed 2^32 SSZ cross-language compatibility and locked Rust toolchain
  • Updated CI to use Rust nightly toolchain matching rust-toolchain.toml

Changed

  • README updated with SSZ support documentation
  • Cross-language compatibility tools now support both bincode and SSZ encodings
  • CI switched to SSZ as default encoding for compatibility tests

Removed

  • Cleaned up unused Rust code from previous implementations

1.0.0 - 2024-11-XX

Added

  • Initial release of hash-zig
  • Pure Zig implementation of Generalized XMSS signatures
  • Wire-compatible with Rust reference implementation (leanSig)
  • Support for lifetimes 2^8, 2^18, and 2^32
  • Bincode serialization support
  • Cross-language compatibility tests (Rust ↔ Zig)
  • Performance optimizations:
    • Parallel bottom tree generation
    • SIMD chain computation (4-wide and 8-wide AVX-512)
    • Parallel top tree building
    • Parallel leaf computation
    • Bottom tree caching
  • Comprehensive test suite and benchmarks
  • GitHub Actions CI/CD pipeline
  • Cross-platform support (Linux, macOS, Windows)