Patching and Extending the WWL+ Circuit Bootstrapping Method to FFT Domains

This is an implementation of 'Patching and Extending the WWL+ Circuit Bootstrapping Method to FFT Domains'.

Contents

We implement:

• tests for
  • GLWE keyswitching by the split FFT (glwe_keyswitch)
  • automorphism-based LWE to GLWE conversion (lwe_to_glwe and lwe_to_glwe_with_dim_switch)
  • LWE keyswitching by GLWE dimension switching (lwe_ks_by_glwe_ds)
  • AES reference implementation and TFHE evaluation (aes_ref and aes_eval)
  • sampling errors (sample_lwe_to_glwe_err, sample_ggsw_conv_err, sample_cbs_err, sample_aes_eval_err)
• benchmarks for
  • LWE to GLWE conversion methods (bench_lwe_to_glwe)
  • improved WoP-PBS (bench_cbs)
  • AES evaluation (bench_aes)
• error analysis for
  • improved WoP-PBS
  • AES evaluation (by our improved WoP-PBS)
  • AES evaluation (by the original WWL+ method)

How to use

• tests: cargo test --release --test 'test_name'
• bench: cargo bench --bench 'benchmark_name'
  • Current sample size is set to 1000. It can be changed by modifying config = Criterion::default().sample_size(1000);
• error analysis: sage err_analysis.sage