Weekly Summary – January 13, 2025

Cryptography benchmarks

• Implemented and benchmarked the complete Leios cryptography suite in the leios_crypto_benchmarks Rust crate
• Key VRF performance metrics:
  • Proving: 240 µs
  • Verifying: 390 µs
• Sortition performance (excluding VRF):
  • Leadership checks (RB/IB/EB): 0.17 µs per slot/pipeline
  • Vote number calculation: 3.8 µs per pipeline
• BLS operations benchmarked:
  • Key possession proof verification: 1.5 ms per key
  • Vote generation/verification: 280 µs / 1.4 ms per vote
  • Certificate operations (300-vote quorum): 50 ms generation, 90 ms verification.

Cryptography design progress

• Optimized vote signature size to potentially as small as 192 bytes
• Determined that 500-vote committee certificates (60% quorum) would fit within Praos blocks at ~58 kB
• Explored potential synergies with KES rotation and Praos VRF BLS keys
• Completed cryptography sections for the first technical report
• Decision made to freeze current report content and move new findings to future documents.

Simulation development

Haskell simulation

• Achieved diffusion latency comparable to benchmark cluster data for Praos blocks
• Integrated agreed-upon simulation parameters with the Rust team
• Added event log output functionality with JSON support
• Implemented 'short-leios' simulation variant matching mainnet ranking block interval
• Fixed coordination issues in Relay mini-protocol consumers
• Completed the PI goal by adding total data transmitted per node visualization.

Rust simulation

• Implemented more granular CPU simulation times
• Fixed race condition in the simulated clock
• Started consuming a new shared configuration file format
• Established a shared configuration format with default parameters in data/simulation/default.yaml.