Lyubashevsky, Vadim, and Gregor Seiler. “NTTRU: Truly Fast NTRU Using NTT”. IACR Transactions on Cryptographic Hardware and Embedded Systems 2019, no. 3 (May 9, 2019): 180-201. Accessed August 12, 2020. https://tches.iacr.org/index.php/TCHES/article/view/8293.