[0.4.0] - 2025-11-19

Summary

• Full support for base2k operations.
• Many improvments to BDD arithmetic.
• Removal of poulpy-backend & spqlios backend.
• Addition of individual crates for each specific backend.
• Some minor bug fixes.

poulpy-hal

• Add cross-base2k normalization

poulpy-core

• Add full support for automatic cross-base2k operations & updated tests accordingly.
• Updated noise helper API.
• Fixed many tests that didn't assess noise correctly.
• Fixed decoding function to use arithmetic rounded division instead of arithmetic right shift.
• Fixed packing to clean values correctly.

poulpy-schemes

• Renamed tfhe crate to bin_fhe.
• Improved support & API for BDD arithmetic, including multi-thread acceleration.
• Updated crate to support cross-base2k operations.
• Add additional operations, such as splice_u8, splice_u16 and sign extension.
• Add GLWEBlindRetriever and GLWEBlindRetrieval: a GGSW-based blind reversible retrieval (enables to instantiate encrypted ROM/RAM like object).
• Improved Cmux speed

poulpy-cpu-ref

• A new crate that provides the refernce CPU implementation of poulpy-hal. This replaces the previous poulpy-backend/cpu_ref.

poulpy-cpu-avx

• A new crate that provides an AVX/FMA accelerated CPU implementation of poulpy-hal. This replaces the previous poulpy-backend/cpu_avx.