Abstract
Finite field multiplication is one of the most useful arithmetic operations and has applications in many areas such as signal processing, coding theory and cryptography. However, it is also one of the most time consuming operations in both software and hardware, which makes it pertinent to develop a fast and efficient implementation. In this paper, we propose a novel FFT based finite field multiplier to address this problem. The fast Fourier transform (FFT) is the collection of computationally efficient algorithms that perform the discrete Fourier transform (DFT). For our purposes, we will use its efficient computation for polynomial multiplication. The FFT performs polynomial multiplication in O(nlog(n)) time compared to the classical method time of O(n2). The idea of using the FFT for finite field multiplication has been researched extensively, but to our knowledge, this is the first implementation in hardware
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