Phap Duong-Ngoc Tuy Nguyen Tan Hanho Lee Configurable Butterfly Unit Architecture for NTT/INTT in Homomorphic Encryption. 345-346 2021 ISOCC https://doi.org/10.1109/ISOCC53507.2021.9614034 conf/isocc/2021 db/conf/isocc/isocc2021.html#Duong-NgocTL21