Faster BGV Bootstrapping for Power-of-Two Cyclotomics through Homomorphic NTT

ePrint Report: Faster BGV Bootstrapping for Power-of-Two Cyclotomics through Homomorphic NTT

Shihe Ma, Tairong Huang, Anyu Wang, Xiaoyun Wang

Power-of-two cyclotomics is a popular choice when instantiating the BGV scheme because of its efficiency and compliance with the FHE standard. However, in power-of-two cyclotomics, the linear transformations in BGV bootstrapping cannot be decomposed into sub-transformations for acceleration with existing techniques. Thus, they can be highly time-consuming when the number of slots is large, degrading the advantage brought by the SIMD …

compliance efficiency eprint report fhe linear ntt popular power report standard wang