DESILO FHE Library v1.5.0 Release Notes

DESILO FHE Library v1.5.0 is now available (released 2025-09-25). Highlights:

• Sparse encoding is now available. This allows encoding less values in a given plaintext/ciphertext, which makes bootstrapping more efficient.
• Lossy bootstraping is now available. This bootstrapping method introduces more noise, but is faster. For experts: this lossy bootstrapping does the slot-to-coeff operation before mod-raise.
• Chebyshev evaluation is now available. This evaluation method is widely used in HE applications to reduce noise in high-order terms.
• CUDA kernel calls for NTT and INTT has been optimized.
• Fixed bug where the engine would crash while trying to encrypt inputs of length 0.

Full release notes: https://fhe.desilo.dev/latest/release_notes/