We tried other Python libraries such as python-ecdsa, fast-ecdsa and other less famous ones, but we didn't find anything that suited our needs. The first one was pure Python, but it was too slow. The ...

Abstract: The substitution box (S-box) component is the heart of the advanced encryption standard (AES) algorithm. The S-box values are generated from the multiplicative inverse of Galois finite field ...

Abstract: This paper presents a procedure for calculating multiplicative inverses Modulo 2 m, based on a novel mathematical approach. The procedure is suitable for software implementation on a general ...

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在密码学中，最常见的一类运算大概就是模算术(Modular Arithmetic)了。特别地，模乘(Modular Multiplication)是其中最复杂的基本运算。这里记录自己对一种重要的模乘算法---蒙哥马利模乘[1]的理解。 蒙哥马利模乘最主要的贡献就是提供了一种给定输入 ，快速计算 的模 ...