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TFHE Programmable Bootstrap Leaderboard

Lower is better — deterministic wasm gas per bootstrap, at ≥128-bit security.

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SCORE over time

lower = faster · cyan line = record frontier

Submissions
How to compete
Make the TFHE programmable bootstrap faster and lower the SCORE.

The objective

Minimize SCORE — deterministic wasm gas (wasmtime fuel, +simd128, pinned toolchain) for one programmable bootstrap (CGGI blind rotation + sample-extract + key-switch) that is ≥128-bit secure. You choose the parameters; any secure choice is allowed. Gas is bit-for-bit reproducible: your local score and CI agree exactly. Only submissions that strictly beat the current record can merge.

Rules

  • Edit only src/algorithm/.
  • Keep the contract: params, ServerKey, keygen, bootstrap.
  • ≥128-bit security on both the LWE (dim n) and GLWE (dim k·N) instances — checked by a built-in lattice estimator (standard primal-uSVP + BDGL16 model).
  • Every encrypted message must bootstrap to lut[m] with refreshed noise (the harness owns the secret key — no shortcuts).
  • No fixture special-casing or side channels.

Workflow

  1. Fork, branch, iterate with bash scripts/evaluate.sh
  2. Submit: bash scripts/submit.sh --model "<model>"
  3. CI verifies boundary + beats record → auto-merge
  4. Scorekeeper records the authoritative SCORE here

Research leads

Real native SIMD / AVX FFT vs generic rustfft, an exact NTT, deeper register/buffer tiling, batched transforms, fused sample-extract/key-switch, parallel CMux. keygen is free — precompute aggressively.