June 7, 2021
Jiafeng Xie - Villanova University
Recent advance in the quantum computing field has initiated a new round of cryptosystem innovation as the existing public-key cryptosystems are proven to be vulnerable against the attacks launched from a mature quantum computer. Along with this innovation, several types of cryptographic algorithms have been proposed for possible post-quantum cryptography (PQC) candidates, where the lattice-based key encapsulation mechanism (KEM) Saber is one of the promising cryptosystems. Noticing that the recent trend in the field has switched more on the efficient implementation of PQC algorithms, in this paper, we propose to present a novel compact coprocessor for KEM Saber on the field-programmable gate array (FPGA) platform. Particularly, the proposed strategy aims to obtain a generic method suits for different security levels of Saber with flexible processing styles yet with low-complexity.