Parallel polynomial multiplication optimized scheme for CRYSTALS-KYBER Post-Quantum Cryptosystem based on FPGA
2021
With the development of quantum information theory, classical cryptographical schemes will be threatened. CRYSTALS-KYBER (KYBER) is a kind of lattice-based post quantum cryptographical algorithms which can resist the quantum attack to a large extent. The polynomial multiplication is the most computationally intensive operation in the KYBER algorithm. In this paper, we proposed a Number Theoretic Transformation (NTT) implementation strategy to speed up the polynomial multiplication in FPGA platform. We optimized the structure by adopting a parallel approach, this can further reduce the NTT iteration time and achieve better performance.
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